FPGA development board "Icarus" - DisContinued/ important announcement

[ngzhang]

...

i will add a temperature sensor on the next design, but IMHO, it's useless.
because it can't be installed inside the FPGA package, and the temperature read out is just a board temp. the response time is not quick enough for protection purpose.

board interconnect can be done now, only need a bitsteam modify. this feature is still under development.

The temperature sensor would not be for the sake of a microsecond shut down - but more for noting a trend to reduce the work to help reduce the temperature.
I don't run my GPU cards near the limits - I set them below those limits to promote a longer life

There is, however, a rather simple need for it: if the fan should fail, you would see a temperature rise and possibly have the software notice this and reduce the amount of work or even stop it from processing.
It may not be fast enough - but I guess only experimentation would tell?

Different subject ...
Actually one thing I've not asked or found written anywhere yet: is it possible to upload a new bitsteam using USB?
Or do you need the extra developer hardware to do that?

the speed adjust  feature should build in the bitsteam it self. the FPGA will automatically sample its temperature (with out a independent sensor device, just "it self" ) and rise and down the operation speed continuously.
why need to read the temperature, calculate, then adjust by sending a command from PC? 
...

As I said, I prefer to have my hardware run a little bit below suggested - and the software would simply reduce the amount of work or stop sending work.
Just like cgminer now does with GPU cards - you can decide on the temperature limit - the GPU cards themselves also have an internal shutdown - but few if anyone lets the cards go that high.

If there is only hardware control and no software control, then ALL boards would have to work exactly the same and have exactly the same limitations - and the hardware control would have to always be correct.

Just like my comments about being able to adjust the MHz of the board, in that case I'd have it err on the side of safety - others may prefer to risk and gain a little more performance.
I want my hardware to last a long time - so I'll prefer to have it run a little lower than some who may prefer to gain that extra performance.

I really hate to butt into this thread, but I wanted to point out that the new X6500 has all of these features you're asking about.

The temp sensors are definitely useful, if only to see exactly the effect of different cooling arrangements or clock frequency. Of course, it takes some time to respond, but typically less than a minute. ngzhang, what exactly makes you think that isn't fast enough? I'm planning to do a fan failure test this weekend, and see how well the temp sensor responds. Maybe even take a heatsink off entirely and see what happens. I get the sense that it's going to be hard to actually kill an FPGA, even trying my hardest. We'll see, though!

We have new firmware that allows you to set the clock to any frequency you like, in 2 MHz increments. Unfortunately, we're still fighting with Xilinx ISE to get it to meet timing at frequencies higher than around 190 MHz. Still, the ability to automatically adjust the clock to whatever frequency best suits your setup is really fun to play around with. MPBM will also automatically reduce the clock if either the invalid nonce rate or the temperature sensors exceed some threshold. You can set these thresholds yourself (and I'd guess that you'd prefer setting those thresholds a little lower than some people).

Finally, you can upload the bitstream over USB, without any special hardware. The software will do this for you automatically whenever you power up the board the first time.

Sorry again for the thread hijack!!

hummm. it's fine. so i have chance to do a deeper analyses.

the core problem is the on board temperature sensor can not measure the FPGA's core temperature (Tj). due to the bad plastic package, it's impossible to accurate measurement it (from the outside).
we already find a way to sample this parameter (Tj) by a special method in a few nanoseconds, and adjust the frequency continuously by the TJ, not 2MHz step or some other value.
a tip for you is: we all using ZTEX's verilog code, this full pipe-lined architecture is pretty fast, but the power consumption is also high. i find that even icarus us a 6 layers PCB with 4 planes plus heatsink and fan, it's really hard to control the Tj under 105C when the frequency over 200MHz, far above. under this situation, generate invalid shares is not a big problem, but the "Electron Drift" effect will kill the chip in a few months. that's why i have a 200Mhz bitsteam months ago, but our volume products still using the 190MHz one. even though icarus is a no warranty product as yours.

about the config interface, you know icarus is a common use development board. i must follow some established rules in this field. but our next product will also add a MCU friendly config port.

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[antirack]

While having both of you guys (fizzisist and ngzhang) here talking about the FPGA chip, let me ask you something.

I noticed that ZTEX is the only one using the CSG484 package while both your devices use another one (   FGG484). I understand that this is due to availability in ngzhang's market in his case at least, but does it also make a difference for cooling and mounting the heat sink? They are all plastic if I am not wrong, aren't they?

[kano]

...
the PL2303 is a good chip, but bad driver, at least under windows. so next product will change to FTDI UART chips. (3 times cost  )

Oh well then use linux - problem solved

13 days running (with only a few short outages) and still no problems (even survived a blackout and restart)

Also with cgminer - still zero hardware errors.

[tucenaber]

Hey ngzhang, if I were to order a few of these boards, how long would I have to wait? Would I have to wait for the next batch or do you take orders right away?

[ngzhang]

Hey ngzhang, if I were to order a few of these boards, how long would I have to wait? Would I have to wait for the next batch or do you take orders right away?

now i'm trying to finish batch3, if there are some boards left, i will put them on stock. this will be proceed  in 1 week .

[tucenaber]

Ok, I guess I have to decide quickly then

Another thing. I think the heat sinks look tiny and suspect I would like to change them into something bigger, but I cannot see any holes for attaching a heat sink to the board like the ztx has. Do you just use pads? If that is the case I suggest making holes in your next design.

[ngzhang]

Ok, I guess I have to decide quickly then

Another thing. I think the heat sinks look tiny and suspect I would like to change them into something bigger, but I cannot see any holes for attaching a heat sink to the board like the ztx has. Do you just use pads? If that is the case I suggest making holes in your next design.

i know, next product will have heat-sink install holes.
the heat-sink now is installed by a 3M thermal transfer tape. DO NOT REMOVE the standard heat-sink unless you have got the same tapes. they are one time use.
and IMHO, change the heat-sink is absolute useless, the standard heat-sink is really cool during the operation.

[TheSeven]

Another thing. I think the heat sinks look tiny and suspect I would like to change them into something bigger, but I cannot see any holes for attaching a heat sink to the board like the ztx has. Do you just use pads? If that is the case I suggest making holes in your next design.

There are also snap-on heatsinks, which attach directly to the FPGA package (they have tiny plastic hooks that slide in between the board and FPGA package), like this one: http://search.digikey.com/us/en/products/ATS-50450P-C2-R0/ATS1047-ND/1284761 (just to show the concept, I know this particular one wouldn't fit).
I am using a similar one for my current Virtex5 FPGA development board, and it's mining fine (but not fanless).

[kano]

Ok, I guess I have to decide quickly then

Another thing. I think the heat sinks look tiny and suspect I would like to change them into something bigger, but I cannot see any holes for attaching a heat sink to the board like the ztx has. Do you just use pads? If that is the case I suggest making holes in your next design.

i know, next product will have heat-sink install holes.
the heat-sink now is installed by a 3M thermal transfer tape. DO NOT REMOVE the standard heat-sink unless you have got the same tapes. they are one time use.
and IMHO, change the heat-sink is absolute useless, the standard heat-sink is really cool during the operation.

Yeah the air blowing off the heat sink with the standard small fans is always cool never warm for me.

[Dhomochevsky]

Just wanted to mention - I found out yesterday that my country (Romania) has a no customs tax policy regarding electronics from China. This is actually good news. You still have to pay 24% VAT though on anything over ~40 Euros of value, but still...


Now, I had a couple of questions regarding the adapters. Do I really need the 12V 3.3 Amp adapter? Or does the smaller one do an equally good job? In the original post Zhang mentions the larger adapter is better "for the future" - why is that, will a future bitstream generate a larger energy consumption?

[tucenaber]

i know, next product will have heat-sink install holes.
the heat-sink now is installed by a 3M thermal transfer tape. DO NOT REMOVE the standard heat-sink unless you have got the same tapes. they are one time use.
and IMHO, change the heat-sink is absolute useless, the standard heat-sink is really cool during the operation.

Good to hear.

BTW The Seven, I know this is totally off topic but are you the same guy who used to (perhaps still?) work with hacking the iPod nano? I built a machine to help you once but had to quit rather abruptly unfortunately. Ahh, the memories...

[ngzhang]

Just wanted to mention - I found out yesterday that my country (Romania) has a no customs tax policy regarding electronics from China. This is actually good news. You still have to pay 24% VAT though on anything over ~40 Euros of value, but still...


Now, I had a couple of questions regarding the adapters. Do I really need the 12V 3.3 Amp adapter? Or does the smaller one do an equally good job? In the original post Zhang mentions the larger adapter is better "for the future" - why is that, will a future bitstream generate a larger energy consumption?

hi,
i just close the order of the 3.33A adapter.
because we found that next bitsteam will reduce the power consume, a 12V/2A (means 24W) is enough. 

[Energizer]

Icarus inside Xpredator case

[Energizer]

Multiple Icarus boards inside AeroCooler Xpredator case

[Glasswalker]

So I'm doing testing with my 17 icarus boards (for now 4 at a time). And I've run into something odd... For now I'm using Win7 to test with (end cluster will be linux based). So I'm using MPBM to mine with. I tested first against deepbit, it ran just fine and mined successfully. Then I mined against our P2Pool instance, and I'm getting A LOT of "Error while requesting job from P2Pool: timed out" (in large blocks of 10-20 at a time every 15 seconds to 1 minute). It still mines ok, but it's constantly throwing that errror. I've cranked the timeout up to like 8 seconds and it doesn't help. The P2Pool instance works fine with my other GPU miners (on cgminer).

Other problem is after a while (a few hours) it switches to suddenly saying "P2Pool rejected share XXX (difficulty blah): unknown reason"
And that's all it will output after that. It shows the Icarus boards working at 380MHash, but the pool is not registering any valid shares anymore.
Sometimes this happens after only a few minutes. If I then restart MPBM it works again for a while.

Is this normal for P2Pool? or MPBM? Or is this a config issue? I'm assuming it's software and not hardware since it works after a restart, and the miners work fine against another pool.

Once I get the linux host machine up I'll try mining using cgminer from there with the latest cgminer version. (I remember someone mentioning it had issues up until recently).

Thoughts?

Here's an excerpt from a log where it's doing this (BTCSYN is the name I gave the P2Pool pool in the config)

Code:

2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner v0.0.4alpha, Copyright (C) 2011-2012 Michael Sparmann (TheSeven)
2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner comes with ABSOLUTELY NO WARRANTY.
2012-03-17 13:57:11.905000: This is free software, and you are welcome to redistribute it under certain conditions.
2012-03-17 13:57:11.920000: See included file COPYING_GPLv2.txt for details.
2012-03-17 13:57:11.920000: Please consider donating to 1PLAPWDejJPJnY2ppYCgtw5ko8G5Q4hPzh or,
2012-03-17 13:57:11.920000: even better, donating a small share of your hashing power if you want
2012-03-17 13:57:11.920000: to support further development of the Modular Python Bitcoin Miner.
2012-03-17 13:57:12.263000: Found long polling URL for BTCSYN: xxxxxxxxxxxxxxxxxxxxxx(blanked)
2012-03-17 13:57:12.466000: Icarus board on COM7: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM6: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM7: Job interval: 8.460652 seconds
2012-03-17 13:57:12.466000: Icarus board on COM6: Job interval: 8.460652 seconds
2012-03-17 13:57:12.513000: Icarus board on COM5: Running at 363.185729 MH/s
2012-03-17 13:57:12.513000: Icarus board on COM5: Job interval: 8.460652 seconds
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0a61a0b3287 on Icarus board on COM7
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0b21a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.575000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0be1a0b3287 on Icarus board on COM5
2012-03-17 13:57:12.591000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:12.591000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0ca1a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.607000: Icarus board on COM8: Running at 364.646236 MH/s
2012-03-17 13:57:12.607000: Icarus board on COM8: Job interval: 8.422760 seconds
2012-03-17 13:57:13.012000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287 on Icarus board on COM5
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1de1a0b3287 on Icarus board on COM7
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1d21a0b3287 on Icarus board on COM8
2012-03-17 13:57:18.722000: Icarus board on COM5 found share: BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287:163888c0
2012-03-17 13:57:18.784000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1ea1a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.018000: BTCSYN accepted share 163888c0 (difficulty 3.78998)
2012-03-17 13:57:19.268000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:19.268000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d0ce1a0b3287 on Icarus board on COM6
2012-03-17 13:57:19.455000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2061a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.549000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2121a0b3287 on Icarus board on COM7
2012-03-17 13:57:19.595000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287 on Icarus board on COM8
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.296000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.421000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287:300d7694
2012-03-17 13:57:21.686000: BTCSYN accepted share 300d7694 (difficulty 1.84503)
2012-03-17 13:57:24.369000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287 on Icarus board on COM8
2012-03-17 13:57:26.366000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287:bdd3a096
2012-03-17 13:57:26.366000: Share bdd3a096 (difficulty 1.10622) didn't meet difficulty 1.48196
2012-03-17 13:57:26.381000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287 on Icarus board on COM8
2012-03-17 13:57:27.739000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.770000: Icarus board on COM6 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287:c0c25500
2012-03-17 13:57:27.785000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d27e1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.941000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2961a0b3287 on Icarus board on COM5
2012-03-17 13:57:28.019000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d28a1a0b3287 on Icarus board on COM7
2012-03-17 13:57:28.066000: BTCSYN accepted share c0c25500 (difficulty 48.55893)
2012-03-17 13:57:28.331000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287:93991896
2012-03-17 13:57:28.394000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2a21a0b3287 on Icarus board on COM8
2012-03-17 13:57:28.612000: BTCSYN accepted share 93991896 (difficulty 2.58183)
2012-03-17 13:57:30.671000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:30.671000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:30.890000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d1fd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:30.937000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287 on Icarus board on COM7
2012-03-17 13:57:30.999000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2211a0b3287 on Icarus board on COM6
2012-03-17 13:57:32.668000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:36.662000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:36.662000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:36.818000: Icarus board on COM7 found share: BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287:c7d66dc2
2012-03-17 13:57:36.943000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2151a0b3287 on Icarus board on COM8
2012-03-17 13:57:36.974000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287 on Icarus board on COM7
2012-03-17 13:57:37.005000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2511a0b3287 on Icarus board on COM6
2012-03-17 13:57:37.083000: BTCSYN rejected share c7d66dc2 (difficulty 2.61083): Unknown reason
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:39.095000: Icarus board on COM7 found share: BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287:412bcb17
2012-03-17 13:57:39.361000: BTCSYN accepted share 412bcb17 (difficulty 12.92653)
2012-03-17 13:57:41.763000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2691a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.200000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:42.200000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d0dd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:42.418000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287 on Icarus board on COM6
2012-03-17 13:57:42.434000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.481000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2151a0b3287 on Icarus board on COM5
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:46.505000: Icarus board on COM7 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287:db68d42d
2012-03-17 13:57:46.771000: BTCSYN accepted share db68d42d (difficulty 1.70488)
2012-03-17 13:57:47.270000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2811a0b3287 on Icarus board on COM7
2012-03-17 13:57:50.624000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2751a0b3287 on Icarus board on COM8
2012-03-17 13:57:50.702000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287:0215b85d
2012-03-17 13:57:50.702000: Share 0215b85d (difficulty 1.12217) didn't meet difficulty 1.43683
2012-03-17 13:57:50.733000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2b11a0b3287 on Icarus board on COM6
2012-03-17 13:57:55.741000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d28d1a0b3287 on Icarus board on COM7
2012-03-17 13:57:59.048000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2a51a0b3287 on Icarus board on COM8
2012-03-17 13:57:59.204000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2991a0b3287 on Icarus board on COM6
2012-03-17 13:58:04.211000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2c91a0b3287 on Icarus board on COM7
2012-03-17 13:58:07.472000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287 on Icarus board on COM8
2012-03-17 13:58:07.675000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287 on Icarus board on COM6
2012-03-17 13:58:08.642000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287:b0cdff8a
2012-03-17 13:58:08.642000: Share b0cdff8a (difficulty 1.11792) didn't meet difficulty 1.43683
2012-03-17 13:58:08.689000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.138000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287:71de9f9b
2012-03-17 13:58:11.200000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0951a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.434000: BTCSYN rejected share 71de9f9b (difficulty 3.99852): Unknown reason
2012-03-17 13:58:12.682000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0a11a0b3287 on Icarus board on COM7
2012-03-17 13:58:14.133000: Icarus board on COM8 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287:212065cb
2012-03-17 13:58:14.164000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287 on Icarus board on COM8
2012-03-17 13:58:14.398000: BTCSYN rejected share 212065cb (difficulty 1.90007): Unknown reason
2012-03-17 13:58:19.671000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0b91a0b3287 on Icarus board on COM6
2012-03-17 13:58:21.153000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287 on Icarus board on COM7
2012-03-17 13:58:21.637000: Icarus board on COM8 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287:53a78e54
2012-03-17 13:58:21.668000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0d11a0b3287 on Icarus board on COM8
2012-03-17 13:58:21.902000: BTCSYN rejected share 53a78e54 (difficulty 2.39257): Unknown reason
2012-03-17 13:58:23.431000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287:34c5d819
2012-03-17 13:58:23.446000: Share 34c5d819 (difficulty 1.02154) didn't meet difficulty 1.42694
2012-03-17 13:58:23.477000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0dd1a0b3287 on Icarus board on COM7
2012-03-17 13:58:28.142000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287 on Icarus board on COM6
2012-03-17 13:58:29.749000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287:60082912
2012-03-17 13:58:29.780000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1011a0b3287 on Icarus board on COM6
2012-03-17 13:58:30.014000: BTCSYN rejected share 60082912 (difficulty 14.53207): Unknown reason
2012-03-17 13:58:30.092000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0f51a0b3287 on Icarus board on COM8
2012-03-17 13:58:31.948000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d13d1a0b3287 on Icarus board on COM7
2012-03-17 13:58:38.251000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287 on Icarus board on COM6
2012-03-17 13:58:38.516000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1251a0b3287 on Icarus board on COM8
2012-03-17 13:58:40.419000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.536000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287:e21be5b9
2012-03-17 13:58:45.551000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1191a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.801000: BTCSYN rejected share e21be5b9 (difficulty 1.53938): Unknown reason
2012-03-17 13:58:47.345000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287:da8bf9e6
2012-03-17 13:58:47.642000: BTCSYN rejected share da8bf9e6 (difficulty 5.84984): Unknown reason

[TheSeven]

BTW The Seven, I know this is totally off topic but are you the same guy who used to (perhaps still?) work with hacking the iPod nano? I built a machine to help you once but had to quit rather abruptly unfortunately. Ahh, the memories...

Yes, I am. And one of those nanotrons actually managed to exploit it 4g firmware

[TheSeven]

So I'm doing testing with my 17 icarus boards (for now 4 at a time). And I've run into something odd... For now I'm using Win7 to test with (end cluster will be linux based). So I'm using MPBM to mine with. I tested first against deepbit, it ran just fine and mined successfully. Then I mined against our P2Pool instance, and I'm getting A LOT of "Error while requesting job from P2Pool: timed out" (in large blocks of 10-20 at a time every 15 seconds to 1 minute). It still mines ok, but it's constantly throwing that errror. I've cranked the timeout up to like 8 seconds and it doesn't help. The P2Pool instance works fine with my other GPU miners (on cgminer).

Other problem is after a while (a few hours) it switches to suddenly saying "P2Pool rejected share XXX (difficulty blah): unknown reason"
And that's all it will output after that. It shows the Icarus boards working at 380MHash, but the pool is not registering any valid shares anymore.
Sometimes this happens after only a few minutes. If I then restart MPBM it works again for a while.

Is this normal for P2Pool? or MPBM? Or is this a config issue? I'm assuming it's software and not hardware since it works after a restart, and the miners work fine against another pool.

Once I get the linux host machine up I'll try mining using cgminer from there with the latest cgminer version. (I remember someone mentioning it had issues up until recently).

Thoughts?

Here's an excerpt from a log where it's doing this (BTCSYN is the name I gave the P2Pool pool in the config)

Code:

2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner v0.0.4alpha, Copyright (C) 2011-2012 Michael Sparmann (TheSeven)
2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner comes with ABSOLUTELY NO WARRANTY.
2012-03-17 13:57:11.905000: This is free software, and you are welcome to redistribute it under certain conditions.
2012-03-17 13:57:11.920000: See included file COPYING_GPLv2.txt for details.
2012-03-17 13:57:11.920000: Please consider donating to 1PLAPWDejJPJnY2ppYCgtw5ko8G5Q4hPzh or,
2012-03-17 13:57:11.920000: even better, donating a small share of your hashing power if you want
2012-03-17 13:57:11.920000: to support further development of the Modular Python Bitcoin Miner.
2012-03-17 13:57:12.263000: Found long polling URL for BTCSYN: xxxxxxxxxxxxxxxxxxxxxx(blanked)
2012-03-17 13:57:12.466000: Icarus board on COM7: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM6: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM7: Job interval: 8.460652 seconds
2012-03-17 13:57:12.466000: Icarus board on COM6: Job interval: 8.460652 seconds
2012-03-17 13:57:12.513000: Icarus board on COM5: Running at 363.185729 MH/s
2012-03-17 13:57:12.513000: Icarus board on COM5: Job interval: 8.460652 seconds
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0a61a0b3287 on Icarus board on COM7
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0b21a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.575000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0be1a0b3287 on Icarus board on COM5
2012-03-17 13:57:12.591000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:12.591000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0ca1a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.607000: Icarus board on COM8: Running at 364.646236 MH/s
2012-03-17 13:57:12.607000: Icarus board on COM8: Job interval: 8.422760 seconds
2012-03-17 13:57:13.012000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287 on Icarus board on COM5
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1de1a0b3287 on Icarus board on COM7
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1d21a0b3287 on Icarus board on COM8
2012-03-17 13:57:18.722000: Icarus board on COM5 found share: BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287:163888c0
2012-03-17 13:57:18.784000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1ea1a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.018000: BTCSYN accepted share 163888c0 (difficulty 3.78998)
2012-03-17 13:57:19.268000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:19.268000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d0ce1a0b3287 on Icarus board on COM6
2012-03-17 13:57:19.455000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2061a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.549000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2121a0b3287 on Icarus board on COM7
2012-03-17 13:57:19.595000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287 on Icarus board on COM8
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.296000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.421000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287:300d7694
2012-03-17 13:57:21.686000: BTCSYN accepted share 300d7694 (difficulty 1.84503)
2012-03-17 13:57:24.369000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287 on Icarus board on COM8
2012-03-17 13:57:26.366000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287:bdd3a096
2012-03-17 13:57:26.366000: Share bdd3a096 (difficulty 1.10622) didn't meet difficulty 1.48196
2012-03-17 13:57:26.381000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287 on Icarus board on COM8
2012-03-17 13:57:27.739000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.770000: Icarus board on COM6 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287:c0c25500
2012-03-17 13:57:27.785000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d27e1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.941000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2961a0b3287 on Icarus board on COM5
2012-03-17 13:57:28.019000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d28a1a0b3287 on Icarus board on COM7
2012-03-17 13:57:28.066000: BTCSYN accepted share c0c25500 (difficulty 48.55893)
2012-03-17 13:57:28.331000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287:93991896
2012-03-17 13:57:28.394000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2a21a0b3287 on Icarus board on COM8
2012-03-17 13:57:28.612000: BTCSYN accepted share 93991896 (difficulty 2.58183)
2012-03-17 13:57:30.671000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:30.671000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:30.890000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d1fd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:30.937000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287 on Icarus board on COM7
2012-03-17 13:57:30.999000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2211a0b3287 on Icarus board on COM6
2012-03-17 13:57:32.668000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:36.662000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:36.662000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:36.818000: Icarus board on COM7 found share: BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287:c7d66dc2
2012-03-17 13:57:36.943000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2151a0b3287 on Icarus board on COM8
2012-03-17 13:57:36.974000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287 on Icarus board on COM7
2012-03-17 13:57:37.005000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2511a0b3287 on Icarus board on COM6
2012-03-17 13:57:37.083000: BTCSYN rejected share c7d66dc2 (difficulty 2.61083): Unknown reason
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:39.095000: Icarus board on COM7 found share: BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287:412bcb17
2012-03-17 13:57:39.361000: BTCSYN accepted share 412bcb17 (difficulty 12.92653)
2012-03-17 13:57:41.763000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2691a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.200000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:42.200000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d0dd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:42.418000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287 on Icarus board on COM6
2012-03-17 13:57:42.434000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.481000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2151a0b3287 on Icarus board on COM5
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:46.505000: Icarus board on COM7 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287:db68d42d
2012-03-17 13:57:46.771000: BTCSYN accepted share db68d42d (difficulty 1.70488)
2012-03-17 13:57:47.270000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2811a0b3287 on Icarus board on COM7
2012-03-17 13:57:50.624000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2751a0b3287 on Icarus board on COM8
2012-03-17 13:57:50.702000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287:0215b85d
2012-03-17 13:57:50.702000: Share 0215b85d (difficulty 1.12217) didn't meet difficulty 1.43683
2012-03-17 13:57:50.733000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2b11a0b3287 on Icarus board on COM6
2012-03-17 13:57:55.741000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d28d1a0b3287 on Icarus board on COM7
2012-03-17 13:57:59.048000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2a51a0b3287 on Icarus board on COM8
2012-03-17 13:57:59.204000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2991a0b3287 on Icarus board on COM6
2012-03-17 13:58:04.211000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2c91a0b3287 on Icarus board on COM7
2012-03-17 13:58:07.472000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287 on Icarus board on COM8
2012-03-17 13:58:07.675000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287 on Icarus board on COM6
2012-03-17 13:58:08.642000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287:b0cdff8a
2012-03-17 13:58:08.642000: Share b0cdff8a (difficulty 1.11792) didn't meet difficulty 1.43683
2012-03-17 13:58:08.689000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.138000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287:71de9f9b
2012-03-17 13:58:11.200000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0951a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.434000: BTCSYN rejected share 71de9f9b (difficulty 3.99852): Unknown reason
2012-03-17 13:58:12.682000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0a11a0b3287 on Icarus board on COM7
2012-03-17 13:58:14.133000: Icarus board on COM8 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287:212065cb
2012-03-17 13:58:14.164000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287 on Icarus board on COM8
2012-03-17 13:58:14.398000: BTCSYN rejected share 212065cb (difficulty 1.90007): Unknown reason
2012-03-17 13:58:19.671000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0b91a0b3287 on Icarus board on COM6
2012-03-17 13:58:21.153000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287 on Icarus board on COM7
2012-03-17 13:58:21.637000: Icarus board on COM8 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287:53a78e54
2012-03-17 13:58:21.668000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0d11a0b3287 on Icarus board on COM8
2012-03-17 13:58:21.902000: BTCSYN rejected share 53a78e54 (difficulty 2.39257): Unknown reason
2012-03-17 13:58:23.431000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287:34c5d819
2012-03-17 13:58:23.446000: Share 34c5d819 (difficulty 1.02154) didn't meet difficulty 1.42694
2012-03-17 13:58:23.477000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0dd1a0b3287 on Icarus board on COM7
2012-03-17 13:58:28.142000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287 on Icarus board on COM6
2012-03-17 13:58:29.749000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287:60082912
2012-03-17 13:58:29.780000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1011a0b3287 on Icarus board on COM6
2012-03-17 13:58:30.014000: BTCSYN rejected share 60082912 (difficulty 14.53207): Unknown reason
2012-03-17 13:58:30.092000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0f51a0b3287 on Icarus board on COM8
2012-03-17 13:58:31.948000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d13d1a0b3287 on Icarus board on COM7
2012-03-17 13:58:38.251000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287 on Icarus board on COM6
2012-03-17 13:58:38.516000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1251a0b3287 on Icarus board on COM8
2012-03-17 13:58:40.419000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.536000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287:e21be5b9
2012-03-17 13:58:45.551000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1191a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.801000: BTCSYN rejected share e21be5b9 (difficulty 1.53938): Unknown reason
2012-03-17 13:58:47.345000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287:da8bf9e6
2012-03-17 13:58:47.642000: BTCSYN rejected share da8bf9e6 (difficulty 5.84984): Unknown reason

Most likely caused by the buggy Windows driver for the PL2303. Disabling the FIFO in the properties of the serial port in device manager might help.

[ngzhang]

So I'm doing testing with my 17 icarus boards (for now 4 at a time). And I've run into something odd... For now I'm using Win7 to test with (end cluster will be linux based). So I'm using MPBM to mine with. I tested first against deepbit, it ran just fine and mined successfully. Then I mined against our P2Pool instance, and I'm getting A LOT of "Error while requesting job from P2Pool: timed out" (in large blocks of 10-20 at a time every 15 seconds to 1 minute). It still mines ok, but it's constantly throwing that errror. I've cranked the timeout up to like 8 seconds and it doesn't help. The P2Pool instance works fine with my other GPU miners (on cgminer).

Other problem is after a while (a few hours) it switches to suddenly saying "P2Pool rejected share XXX (difficulty blah): unknown reason"
And that's all it will output after that. It shows the Icarus boards working at 380MHash, but the pool is not registering any valid shares anymore.
Sometimes this happens after only a few minutes. If I then restart MPBM it works again for a while.

Is this normal for P2Pool? or MPBM? Or is this a config issue? I'm assuming it's software and not hardware since it works after a restart, and the miners work fine against another pool.

Once I get the linux host machine up I'll try mining using cgminer from there with the latest cgminer version. (I remember someone mentioning it had issues up until recently).

Thoughts?

Here's an excerpt from a log where it's doing this (BTCSYN is the name I gave the P2Pool pool in the config)

Code:

2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner v0.0.4alpha, Copyright (C) 2011-2012 Michael Sparmann (TheSeven)
2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner comes with ABSOLUTELY NO WARRANTY.
2012-03-17 13:57:11.905000: This is free software, and you are welcome to redistribute it under certain conditions.
2012-03-17 13:57:11.920000: See included file COPYING_GPLv2.txt for details.
2012-03-17 13:57:11.920000: Please consider donating to 1PLAPWDejJPJnY2ppYCgtw5ko8G5Q4hPzh or,
2012-03-17 13:57:11.920000: even better, donating a small share of your hashing power if you want
2012-03-17 13:57:11.920000: to support further development of the Modular Python Bitcoin Miner.
2012-03-17 13:57:12.263000: Found long polling URL for BTCSYN: xxxxxxxxxxxxxxxxxxxxxx(blanked)
2012-03-17 13:57:12.466000: Icarus board on COM7: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM6: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM7: Job interval: 8.460652 seconds
2012-03-17 13:57:12.466000: Icarus board on COM6: Job interval: 8.460652 seconds
2012-03-17 13:57:12.513000: Icarus board on COM5: Running at 363.185729 MH/s
2012-03-17 13:57:12.513000: Icarus board on COM5: Job interval: 8.460652 seconds
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0a61a0b3287 on Icarus board on COM7
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0b21a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.575000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0be1a0b3287 on Icarus board on COM5
2012-03-17 13:57:12.591000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:12.591000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0ca1a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.607000: Icarus board on COM8: Running at 364.646236 MH/s
2012-03-17 13:57:12.607000: Icarus board on COM8: Job interval: 8.422760 seconds
2012-03-17 13:57:13.012000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287 on Icarus board on COM5
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1de1a0b3287 on Icarus board on COM7
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1d21a0b3287 on Icarus board on COM8
2012-03-17 13:57:18.722000: Icarus board on COM5 found share: BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287:163888c0
2012-03-17 13:57:18.784000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1ea1a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.018000: BTCSYN accepted share 163888c0 (difficulty 3.78998)
2012-03-17 13:57:19.268000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:19.268000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d0ce1a0b3287 on Icarus board on COM6
2012-03-17 13:57:19.455000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2061a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.549000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2121a0b3287 on Icarus board on COM7
2012-03-17 13:57:19.595000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287 on Icarus board on COM8
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.296000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.421000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287:300d7694
2012-03-17 13:57:21.686000: BTCSYN accepted share 300d7694 (difficulty 1.84503)
2012-03-17 13:57:24.369000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287 on Icarus board on COM8
2012-03-17 13:57:26.366000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287:bdd3a096
2012-03-17 13:57:26.366000: Share bdd3a096 (difficulty 1.10622) didn't meet difficulty 1.48196
2012-03-17 13:57:26.381000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287 on Icarus board on COM8
2012-03-17 13:57:27.739000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.770000: Icarus board on COM6 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287:c0c25500
2012-03-17 13:57:27.785000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d27e1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.941000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2961a0b3287 on Icarus board on COM5
2012-03-17 13:57:28.019000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d28a1a0b3287 on Icarus board on COM7
2012-03-17 13:57:28.066000: BTCSYN accepted share c0c25500 (difficulty 48.55893)
2012-03-17 13:57:28.331000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287:93991896
2012-03-17 13:57:28.394000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2a21a0b3287 on Icarus board on COM8
2012-03-17 13:57:28.612000: BTCSYN accepted share 93991896 (difficulty 2.58183)
2012-03-17 13:57:30.671000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:30.671000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:30.890000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d1fd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:30.937000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287 on Icarus board on COM7
2012-03-17 13:57:30.999000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2211a0b3287 on Icarus board on COM6
2012-03-17 13:57:32.668000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:36.662000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:36.662000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:36.818000: Icarus board on COM7 found share: BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287:c7d66dc2
2012-03-17 13:57:36.943000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2151a0b3287 on Icarus board on COM8
2012-03-17 13:57:36.974000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287 on Icarus board on COM7
2012-03-17 13:57:37.005000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2511a0b3287 on Icarus board on COM6
2012-03-17 13:57:37.083000: BTCSYN rejected share c7d66dc2 (difficulty 2.61083): Unknown reason
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:39.095000: Icarus board on COM7 found share: BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287:412bcb17
2012-03-17 13:57:39.361000: BTCSYN accepted share 412bcb17 (difficulty 12.92653)
2012-03-17 13:57:41.763000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2691a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.200000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:42.200000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d0dd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:42.418000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287 on Icarus board on COM6
2012-03-17 13:57:42.434000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.481000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2151a0b3287 on Icarus board on COM5
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:46.505000: Icarus board on COM7 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287:db68d42d
2012-03-17 13:57:46.771000: BTCSYN accepted share db68d42d (difficulty 1.70488)
2012-03-17 13:57:47.270000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2811a0b3287 on Icarus board on COM7
2012-03-17 13:57:50.624000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2751a0b3287 on Icarus board on COM8
2012-03-17 13:57:50.702000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287:0215b85d
2012-03-17 13:57:50.702000: Share 0215b85d (difficulty 1.12217) didn't meet difficulty 1.43683
2012-03-17 13:57:50.733000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2b11a0b3287 on Icarus board on COM6
2012-03-17 13:57:55.741000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d28d1a0b3287 on Icarus board on COM7
2012-03-17 13:57:59.048000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2a51a0b3287 on Icarus board on COM8
2012-03-17 13:57:59.204000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2991a0b3287 on Icarus board on COM6
2012-03-17 13:58:04.211000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2c91a0b3287 on Icarus board on COM7
2012-03-17 13:58:07.472000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287 on Icarus board on COM8
2012-03-17 13:58:07.675000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287 on Icarus board on COM6
2012-03-17 13:58:08.642000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287:b0cdff8a
2012-03-17 13:58:08.642000: Share b0cdff8a (difficulty 1.11792) didn't meet difficulty 1.43683
2012-03-17 13:58:08.689000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.138000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287:71de9f9b
2012-03-17 13:58:11.200000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0951a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.434000: BTCSYN rejected share 71de9f9b (difficulty 3.99852): Unknown reason
2012-03-17 13:58:12.682000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0a11a0b3287 on Icarus board on COM7
2012-03-17 13:58:14.133000: Icarus board on COM8 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287:212065cb
2012-03-17 13:58:14.164000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287 on Icarus board on COM8
2012-03-17 13:58:14.398000: BTCSYN rejected share 212065cb (difficulty 1.90007): Unknown reason
2012-03-17 13:58:19.671000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0b91a0b3287 on Icarus board on COM6
2012-03-17 13:58:21.153000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287 on Icarus board on COM7
2012-03-17 13:58:21.637000: Icarus board on COM8 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287:53a78e54
2012-03-17 13:58:21.668000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0d11a0b3287 on Icarus board on COM8
2012-03-17 13:58:21.902000: BTCSYN rejected share 53a78e54 (difficulty 2.39257): Unknown reason
2012-03-17 13:58:23.431000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287:34c5d819
2012-03-17 13:58:23.446000: Share 34c5d819 (difficulty 1.02154) didn't meet difficulty 1.42694
2012-03-17 13:58:23.477000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0dd1a0b3287 on Icarus board on COM7
2012-03-17 13:58:28.142000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287 on Icarus board on COM6
2012-03-17 13:58:29.749000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287:60082912
2012-03-17 13:58:29.780000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1011a0b3287 on Icarus board on COM6
2012-03-17 13:58:30.014000: BTCSYN rejected share 60082912 (difficulty 14.53207): Unknown reason
2012-03-17 13:58:30.092000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0f51a0b3287 on Icarus board on COM8
2012-03-17 13:58:31.948000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d13d1a0b3287 on Icarus board on COM7
2012-03-17 13:58:38.251000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287 on Icarus board on COM6
2012-03-17 13:58:38.516000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1251a0b3287 on Icarus board on COM8
2012-03-17 13:58:40.419000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.536000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287:e21be5b9
2012-03-17 13:58:45.551000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1191a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.801000: BTCSYN rejected share e21be5b9 (difficulty 1.53938): Unknown reason
2012-03-17 13:58:47.345000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287:da8bf9e6
2012-03-17 13:58:47.642000: BTCSYN rejected share da8bf9e6 (difficulty 5.84984): Unknown reason

please observe the LEDs to clear the FPGA's actual operation state. if the IDLE indicate LED (LED1 and LED5) light up:

disable the FIFO will help, change some other version driver might help, change to Linux probably solve the problem permanently.

if not, maybe it's miner's bug effects.

now i'm testing a 40 boards rig with 15.2G/s speed, very stable. no error in at least 24 hours.

[TheSeven]

now i'm testing a 40 boards rig with 15.2G/s speed, very stable. no error in at least 24 hours.

master or testing branch?

[Glasswalker]

Using MBPM or cgminer?
I will be finished the Linux host tonight. So will let you know if that helps.

Thanks!

So I'm doing testing with my 17 icarus boards (for now 4 at a time). And I've run into something odd... For now I'm using Win7 to test with (end cluster will be linux based). So I'm using MPBM to mine with. I tested first against deepbit, it ran just fine and mined successfully. Then I mined against our P2Pool instance, and I'm getting A LOT of "Error while requesting job from P2Pool: timed out" (in large blocks of 10-20 at a time every 15 seconds to 1 minute). It still mines ok, but it's constantly throwing that errror. I've cranked the timeout up to like 8 seconds and it doesn't help. The P2Pool instance works fine with my other GPU miners (on cgminer).

Other problem is after a while (a few hours) it switches to suddenly saying "P2Pool rejected share XXX (difficulty blah): unknown reason"
And that's all it will output after that. It shows the Icarus boards working at 380MHash, but the pool is not registering any valid shares anymore.
Sometimes this happens after only a few minutes. If I then restart MPBM it works again for a while.

Is this normal for P2Pool? or MPBM? Or is this a config issue? I'm assuming it's software and not hardware since it works after a restart, and the miners work fine against another pool.

Once I get the linux host machine up I'll try mining using cgminer from there with the latest cgminer version. (I remember someone mentioning it had issues up until recently).

Thoughts?

Here's an excerpt from a log where it's doing this (BTCSYN is the name I gave the P2Pool pool in the config)

Code:

2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner v0.0.4alpha, Copyright (C) 2011-2012 Michael Sparmann (TheSeven)
2012-03-17 13:57:11.905000: Modular Python Bitcoin Miner comes with ABSOLUTELY NO WARRANTY.
2012-03-17 13:57:11.905000: This is free software, and you are welcome to redistribute it under certain conditions.
2012-03-17 13:57:11.920000: See included file COPYING_GPLv2.txt for details.
2012-03-17 13:57:11.920000: Please consider donating to 1PLAPWDejJPJnY2ppYCgtw5ko8G5Q4hPzh or,
2012-03-17 13:57:11.920000: even better, donating a small share of your hashing power if you want
2012-03-17 13:57:11.920000: to support further development of the Modular Python Bitcoin Miner.
2012-03-17 13:57:12.263000: Found long polling URL for BTCSYN: xxxxxxxxxxxxxxxxxxxxxx(blanked)
2012-03-17 13:57:12.466000: Icarus board on COM7: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM6: Running at 363.185729 MH/s
2012-03-17 13:57:12.466000: Icarus board on COM7: Job interval: 8.460652 seconds
2012-03-17 13:57:12.466000: Icarus board on COM6: Job interval: 8.460652 seconds
2012-03-17 13:57:12.513000: Icarus board on COM5: Running at 363.185729 MH/s
2012-03-17 13:57:12.513000: Icarus board on COM5: Job interval: 8.460652 seconds
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0a61a0b3287 on Icarus board on COM7
2012-03-17 13:57:12.560000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0b21a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.575000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0be1a0b3287 on Icarus board on COM5
2012-03-17 13:57:12.591000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:12.591000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d0ca1a0b3287 on Icarus board on COM6
2012-03-17 13:57:12.607000: Icarus board on COM8: Running at 364.646236 MH/s
2012-03-17 13:57:12.607000: Icarus board on COM8: Job interval: 8.422760 seconds
2012-03-17 13:57:13.012000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287 on Icarus board on COM5
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1de1a0b3287 on Icarus board on COM7
2012-03-17 13:57:13.028000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1d21a0b3287 on Icarus board on COM8
2012-03-17 13:57:18.722000: Icarus board on COM5 found share: BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1c61a0b3287:163888c0
2012-03-17 13:57:18.784000: Mining BTCSYN:9e047d3fdeb421c048cc040a1221038937f8cb2f5d04a50f142ab86c86cde29e:282434164f64d1ea1a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.018000: BTCSYN accepted share 163888c0 (difficulty 3.78998)
2012-03-17 13:57:19.268000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:19.268000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d0ce1a0b3287 on Icarus board on COM6
2012-03-17 13:57:19.455000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2061a0b3287 on Icarus board on COM5
2012-03-17 13:57:19.549000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2121a0b3287 on Icarus board on COM7
2012-03-17 13:57:19.595000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287 on Icarus board on COM8
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.265000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.280000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.296000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:21.421000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2421a0b3287:300d7694
2012-03-17 13:57:21.686000: BTCSYN accepted share 300d7694 (difficulty 1.84503)
2012-03-17 13:57:24.369000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287 on Icarus board on COM8
2012-03-17 13:57:26.366000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d21e1a0b3287:bdd3a096
2012-03-17 13:57:26.366000: Share bdd3a096 (difficulty 1.10622) didn't meet difficulty 1.48196
2012-03-17 13:57:26.381000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287 on Icarus board on COM8
2012-03-17 13:57:27.739000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.770000: Icarus board on COM6 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d25a1a0b3287:c0c25500
2012-03-17 13:57:27.785000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d27e1a0b3287 on Icarus board on COM6
2012-03-17 13:57:27.941000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2961a0b3287 on Icarus board on COM5
2012-03-17 13:57:28.019000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d28a1a0b3287 on Icarus board on COM7
2012-03-17 13:57:28.066000: BTCSYN accepted share c0c25500 (difficulty 48.55893)
2012-03-17 13:57:28.331000: Icarus board on COM8 found share: BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2661a0b3287:93991896
2012-03-17 13:57:28.394000: Mining BTCSYN:ba5018e879909a310117ea668a088c674c36154d9519db23515c0692fd6c97bf:f578dcb84f64d2a21a0b3287 on Icarus board on COM8
2012-03-17 13:57:28.612000: BTCSYN accepted share 93991896 (difficulty 2.58183)
2012-03-17 13:57:30.671000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:30.671000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:30.890000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d1fd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:30.937000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287 on Icarus board on COM7
2012-03-17 13:57:30.999000: Mining BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2211a0b3287 on Icarus board on COM6
2012-03-17 13:57:32.668000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.684000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:32.699000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:36.662000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:36.662000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d0dd1a0b3287 on Icarus board on COM5
2012-03-17 13:57:36.818000: Icarus board on COM7 found share: BTCSYN:842c41827ff601bc88f78f4d54eaaee08f971e2ddce147e8dee6eafebf82e920:1beae1194f64d2151a0b3287:c7d66dc2
2012-03-17 13:57:36.943000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2151a0b3287 on Icarus board on COM8
2012-03-17 13:57:36.974000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287 on Icarus board on COM7
2012-03-17 13:57:37.005000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2511a0b3287 on Icarus board on COM6
2012-03-17 13:57:37.083000: BTCSYN rejected share c7d66dc2 (difficulty 2.61083): Unknown reason
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.643000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.659000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:38.674000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:39.095000: Icarus board on COM7 found share: BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2091a0b3287:412bcb17
2012-03-17 13:57:39.361000: BTCSYN accepted share 412bcb17 (difficulty 12.92653)
2012-03-17 13:57:41.763000: Mining BTCSYN:e653cb49d35af5bf52678ec18c43c55c4a604c5782662b45084c52d7d5205491:417b2daa4f64d2691a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.200000: Long polling: BTCSYN indicates that a new block was found
2012-03-17 13:57:42.200000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d0dd1a0b3287 on Icarus board on COM8
2012-03-17 13:57:42.418000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287 on Icarus board on COM6
2012-03-17 13:57:42.434000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287 on Icarus board on COM7
2012-03-17 13:57:42.481000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2151a0b3287 on Icarus board on COM5
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.181000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.197000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.212000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:44.228000: Error while requesting job from BTCSYN: timed out
2012-03-17 13:57:46.505000: Icarus board on COM7 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2211a0b3287:db68d42d
2012-03-17 13:57:46.771000: BTCSYN accepted share db68d42d (difficulty 1.70488)
2012-03-17 13:57:47.270000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2811a0b3287 on Icarus board on COM7
2012-03-17 13:57:50.624000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2751a0b3287 on Icarus board on COM8
2012-03-17 13:57:50.702000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2091a0b3287:0215b85d
2012-03-17 13:57:50.702000: Share 0215b85d (difficulty 1.12217) didn't meet difficulty 1.43683
2012-03-17 13:57:50.733000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2b11a0b3287 on Icarus board on COM6
2012-03-17 13:57:55.741000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d28d1a0b3287 on Icarus board on COM7
2012-03-17 13:57:59.048000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2a51a0b3287 on Icarus board on COM8
2012-03-17 13:57:59.204000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2991a0b3287 on Icarus board on COM6
2012-03-17 13:58:04.211000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2c91a0b3287 on Icarus board on COM7
2012-03-17 13:58:07.472000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287 on Icarus board on COM8
2012-03-17 13:58:07.675000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287 on Icarus board on COM6
2012-03-17 13:58:08.642000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2e11a0b3287:b0cdff8a
2012-03-17 13:58:08.642000: Share b0cdff8a (difficulty 1.11792) didn't meet difficulty 1.43683
2012-03-17 13:58:08.689000: Mining BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.138000: Icarus board on COM6 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2d51a0b3287:71de9f9b
2012-03-17 13:58:11.200000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0951a0b3287 on Icarus board on COM6
2012-03-17 13:58:11.434000: BTCSYN rejected share 71de9f9b (difficulty 3.99852): Unknown reason
2012-03-17 13:58:12.682000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0a11a0b3287 on Icarus board on COM7
2012-03-17 13:58:14.133000: Icarus board on COM8 found share: BTCSYN:70b07553bf4e6727a8343401f7c789d6c19eae4a8f107f1b732ff13a08d266e3:72d2f8634f64d2bd1a0b3287:212065cb
2012-03-17 13:58:14.164000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287 on Icarus board on COM8
2012-03-17 13:58:14.398000: BTCSYN rejected share 212065cb (difficulty 1.90007): Unknown reason
2012-03-17 13:58:19.671000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0b91a0b3287 on Icarus board on COM6
2012-03-17 13:58:21.153000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287 on Icarus board on COM7
2012-03-17 13:58:21.637000: Icarus board on COM8 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0ad1a0b3287:53a78e54
2012-03-17 13:58:21.668000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0d11a0b3287 on Icarus board on COM8
2012-03-17 13:58:21.902000: BTCSYN rejected share 53a78e54 (difficulty 2.39257): Unknown reason
2012-03-17 13:58:23.431000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0c51a0b3287:34c5d819
2012-03-17 13:58:23.446000: Share 34c5d819 (difficulty 1.02154) didn't meet difficulty 1.42694
2012-03-17 13:58:23.477000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0dd1a0b3287 on Icarus board on COM7
2012-03-17 13:58:28.142000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287 on Icarus board on COM6
2012-03-17 13:58:29.749000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0e91a0b3287:60082912
2012-03-17 13:58:29.780000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1011a0b3287 on Icarus board on COM6
2012-03-17 13:58:30.014000: BTCSYN rejected share 60082912 (difficulty 14.53207): Unknown reason
2012-03-17 13:58:30.092000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d0f51a0b3287 on Icarus board on COM8
2012-03-17 13:58:31.948000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d13d1a0b3287 on Icarus board on COM7
2012-03-17 13:58:38.251000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287 on Icarus board on COM6
2012-03-17 13:58:38.516000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1251a0b3287 on Icarus board on COM8
2012-03-17 13:58:40.419000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.536000: Icarus board on COM7 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1311a0b3287:e21be5b9
2012-03-17 13:58:45.551000: Mining BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d1191a0b3287 on Icarus board on COM7
2012-03-17 13:58:45.801000: BTCSYN rejected share e21be5b9 (difficulty 1.53938): Unknown reason
2012-03-17 13:58:47.345000: Icarus board on COM6 found share: BTCSYN:5a6309d632f21d20423387bc221960d40bb9ee95503ae9c0cf0322f7722c9a3d:02e89e444f64d10d1a0b3287:da8bf9e6
2012-03-17 13:58:47.642000: BTCSYN rejected share da8bf9e6 (difficulty 5.84984): Unknown reason

please observe the LEDs to clear the FPGA's actual operation state. if the IDLE indicate LED (LED1 and LED5) light up:

disable the FIFO will help, change some other version driver might help, change to Linux probably solve the problem permanently.

if not, maybe it's miner's bug effects.

now i'm testing a 40 boards rig with 15.2G/s speed, very stable. no error in at least 24 hours.