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Author Topic: Swedish ASIC miner company kncminer.com  (Read 3012878 times)
Biffa
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November 25, 2013, 09:26:38 AM
 #23101

Sorry this is a little late but how many bad cores do you need before KNC will allow an RMA?

Was your ASIC completely dead before KNC would give you an RMA?

I have one ASIC with probably 15 bad cores which slows my hashrate...   

Or just live with it?

>>>As soon as the first report good numbers I'll go for it.
>>>Currently running stable on 3.8.2 with my 5/192 bad cores board, so I don't want to mess with it now.


felix is it 15 bad cores or 5?

You know that with the tuning cgminer it turns cores on and off to try and find a stable medium.

What are your HW error %'s?

I've given up on the firmwares that pump the voltage up (>0.97) and tune the cores, I'm sticking with 0.96 and the non tuning 3.8.2 cgminer and my HW errors are down from 4.5% to 1.3% and dropping.

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November 25, 2013, 09:32:03 AM
 #23102


Mining Status
CGMiner Status   Running (pid=1774)
Last Checked   Mon Nov 25 09:31:45 UTC 2013
Avg. Hash Rate   563 Gh/s
Difficulty Accepted   9,110,016
Difficulty Rejected   5,120 (0.1 %)
Hardware Errors   84,158 (0.9 %)
WU   7,852
Difficulty Stale   0
Network Blocks   146
Pool Rejected   0.1 %
Pool Stale   0
Best Share   2,235,713
Found Blocks   0


these is beta 0.98.1
is ok?
-ck
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November 25, 2013, 09:33:29 AM
 #23103


Mining Status
CGMiner Status   Running (pid=1774)
Last Checked   Mon Nov 25 09:31:45 UTC 2013
Avg. Hash Rate   563 Gh/s
Difficulty Accepted   9,110,016
Difficulty Rejected   5,120 (0.1 %)
Hardware Errors   84,158 (0.9 %)
WU   7,852
Difficulty Stale   0
Network Blocks   146
Pool Rejected   0.1 %
Pool Stale   0
Best Share   2,235,713
Found Blocks   0


these is beta 0.98.1
is ok?

Looks good, but every hardware is different with respect to dud cores. Some is golden and some is scat.

Primary developer/maintainer for cgminer and ckpool/ckproxy.
ZERO FEE Pooled mining at ckpool.org 1% Fee Solo mining at solo.ckpool.org
-ck
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November 25, 2013, 09:34:55 AM
 #23104

thanks ckolivas
Biffa
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November 25, 2013, 09:41:41 AM
 #23105


Looks good, but every hardware is different with respect to dud cores. Some is golden and some is scat.

ck, can you elaborate a little on the difference in behaviour & reporting between the 3.8.2 tuned and non-tuned on a KnC miner?

I haven't run the latest tuned version but in earlier ones it would turn the cores on and off according to number of hw errors (off) and time (on)

To see the status I'd run Update Asic Status on Bertmod and see what cores were turned on or off, these numbers would change over time obviously.

With the non-tuning version of cgminer, the cores don't get turned on and off.

With both versions of the software they report HW errors numerically and as a percentage.

Is there any correlation between the HW numbers and the different methods that the tuning/non-tuning versions of cgminer use to handle cores?

Or are HW errors irrelevant due to the way the KnC hardware reports them?

Cheers!

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November 25, 2013, 09:45:43 AM
 #23106

I am not sure this is the right place for this but this seems to be a catch all thread so here goes.

I have 2 late October Jupiters.  One I was able to get to 550 with all cores running under 98.1 beta.  The other has 2 cores on one board that will not work until 73C or 74C and as soon as they start the whole board shuts down (I assume thermal shutdown) so it only works at around 480.

I was living with that (not economically feasible to give up 480 hashes for 2 weeks to rma the thing just to maybe get another 60 or so).

Now the problem.  I shut the full speed unit down for a few minutes to change locations and when I restarted it cgminer fails to start.  The bone boots and I can tty into it.  I can try to manually start cgminer and I get a "cgminer failed to start: Write Error".

I tried changing firmware.  Cgminer will run on 98 but not on anything after and on 98 I have all die 0s dead.

Anyone have any clues?

TaggedYa
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November 25, 2013, 09:59:14 AM
 #23107

from #kncminer channel

Quote
10:45 < btcoco> any rig worth investment atm?
10:55 < hno> btcoco, depends on how you think the BTC price will evolve and associated risks. Unfortunately KnCMiner is all sold out at the moment, but there will
             be more available in some weeks I think.


for who doesn't know hno, he's an OrSoC engineer. This going to be big, potentially  Tongue




Bitcoin is a participatory system which ought to respect the right of self determinism of all of its users - Gregory Maxwell.
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November 25, 2013, 10:02:47 AM
 #23108

I am not sure this is the right place for this but this seems to be a catch all thread so here goes.

I have 2 late October Jupiters.  One I was able to get to 550 with all cores running under 98.1 beta.  The other has 2 cores on one board that will not work until 73C or 74C and as soon as they start the whole board shuts down (I assume thermal shutdown) so it only works at around 480.

I was living with that (not economically feasible to give up 480 hashes for 2 weeks to rma the thing just to maybe get another 60 or so).

Now the problem.  I shut the full speed unit down for a few minutes to change locations and when I restarted it cgminer fails to start.  The bone boots and I can tty into it.  I can try to manually start cgminer and I get a "cgminer failed to start: Write Error".

I tried changing firmware.  Cgminer will run on 98 but not on anything after and on 98 I have all die 0s dead.

Anyone have any clues?

TaggedYa


Trouble shooting wise.

Make sure all the power cables are correctly attached.
Do a hard reset on the device:

Quote
HARD RESET
The miner is equipped with a hard reset button. This is located next to the power
input on the controller board. To perform a hard reset on the miner you must
press the button 5 times consecutively, wait 5 seconds, and then press the button a
further 5 times. Please note that the miner will not restart.

Also:
From the KNC support page: https://www.kncminer.com/pages/troubleshooting

Quote
Underperforming Miner

If you have a miner that seems to be underperforming you need to follow the below instruction.

To verify if an ASIC board is broken or the performance drop is due to software issues please follow these steps:

 1. Turn off and disconnect your PSU.
 2. Open your miner case.
 3. Unplug the flat ribben cable connecting one of the ASIC Boards (the circuit board that has the big fan on it) to the controller board.
 4. Unplug the PCI-Express power cable from the ASIC board.
 5. Ensure all other cables are connected properly.
6. Reconnect the PSU and power on the miner. Let the miner work for an hour to asses performance.  

If the miner is now performing as expected you should install the latest firmware.

7. Turn off the power and disconnect the PSU, reconnect all the PCI-E and ribben cables.
 8. Restart the miner and install the latest firmware.

Lastly, If you can isolate the bad board, then you can just return that bad board for an RMA and the miner can continue mining, you don't have to lose the entire miner and 480Gh/s just for one bad board.

ncs0ne
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November 25, 2013, 10:08:10 AM
 #23109

(...)
Now the problem.  I shut the full speed unit down for a few minutes to change locations and when I restarted it cgminer fails to start.  The bone boots and I can tty into it.  I can try to manually start cgminer and I get a "cgminer failed to start: Write Error".
(...)


I'm not able to find the string 'Write Error' (without caps as well) in cgminer source code.
Is it the exact error msg you get ?

If so I guess your issue is located somewhere in the OS.
Anything useful in the log file ?

*Note: journalctl is the replacement for a "less /var/log/syslog"
http://www.freedesktop.org/software/systemd/man/journalctl.html

Biffa
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November 25, 2013, 10:10:29 AM
 #23110

(...)
Now the problem.  I shut the full speed unit down for a few minutes to change locations and when I restarted it cgminer fails to start.  The bone boots and I can tty into it.  I can try to manually start cgminer and I get a "cgminer failed to start: Write Error".
(...)


I'm not able to find the string 'Write Error' (without caps as well) in cgminer source code.
Is it the exact error msg you get ?

If so I guess your issue is located somewhere in the OS.
Anything useful in the log file ?

*Note: journalctl is the replacement for a "less /var/log/syslog"
http://www.freedesktop.org/software/systemd/man/journalctl.html

write error could mean the beaglebone storage is full or corrupted.

in putty:
df -h will show the disk space
fdisk -l will show the partition info

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November 25, 2013, 10:17:56 AM
 #23111

Ok the Noob , (thats me) got it working....

So i upgraded the modules and my saturn is hashing at a jupiter speed ...only one prob ...the front fans on casing have stopped working ...any idea why and solution ?
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November 25, 2013, 10:19:41 AM
 #23112

from #kncminer channel

Quote
10:45 < btcoco> any rig worth investment atm?
10:55 < hno> btcoco, depends on how you think the BTC price will evolve and associated risks. Unfortunately KnCMiner is all sold out at the moment, but there will
             be more available in some weeks I think.


for who doesn't know hno is a OrSoC eng. This going to be big, potentially  Tongue


nothing new if in some weeks means March
7/18/2013 12:27:00 PM

We will ship no devices in December 2013, January 2014 or  February 2014. Meaning that once we have taken the difficulty up at the end of November we will not release any more hashing power for 3 months. We will then release our new generation of devices, which will begin shipping in March 2014. These devices will also have a much higher GH/$ rating than any of our current offerings.


!! File Complaints Against KnCMiner NOW !!
..and Thou shalt spread the coin in the name of cryptography for eternity
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November 25, 2013, 10:20:32 AM
 #23113

Ok the Noob , (thats me) got it working....

So i upgraded the modules and my saturn is hashing at a jupiter speed ...only one prob ...the front fans on casing have stopped working ...any idea why and solution ?

unplugged connectors ?

!! File Complaints Against KnCMiner NOW !!
..and Thou shalt spread the coin in the name of cryptography for eternity
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November 25, 2013, 10:23:52 AM
 #23114


Looks good, but every hardware is different with respect to dud cores. Some is golden and some is scat.

ck, can you elaborate a little on the difference in behaviour & reporting between the 3.8.2 tuned and non-tuned on a KnC miner?
Reporting between the two is identical.

The tuned one simply changes the decision making process about when to turn a core off and back on. Firstly it turns all cores on every time it's starting. However it turns cores off very quickly instead of after many errors, but turns cores off in a staggered fashion a few seconds apart. Then it turns them back on after only a minute, but will only turn cores back on if no core on/off has happened for the last minute staggering them much more to turn them back on. My observations were that turning dud cores off always helps the hashrate so making it easier to turn cores off made sense, but with rapid changes to the number of cores on/off, the power going to the units changes wildly when in fact the device will be more stable if it only ever changes power requirements slowly, hence the changes. It also increases the duration cores are off every time they fail before disabling them permanently (for that run of cgminer).

Anyway I find the hashrate and consequently the hardware error rate keeps improving over time as only the decent cores are left hashing, and cores that are borderline turn on and off intermittently in a staggered way that doesn't change the power requirements dramatically.

Primary developer/maintainer for cgminer and ckpool/ckproxy.
ZERO FEE Pooled mining at ckpool.org 1% Fee Solo mining at solo.ckpool.org
-ck
sickpig
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November 25, 2013, 10:24:26 AM
 #23115

from #kncminer channel

Quote
10:45 < btcoco> any rig worth investment atm?
10:55 < hno> btcoco, depends on how you think the BTC price will evolve and associated risks. Unfortunately KnCMiner is all sold out at the moment, but there will
             be more available in some weeks I think.


for who doesn't know hno is a OrSoC eng. This going to be big, potentially  Tongue


nothing new if in some weeks means March

sure you're right if he meant to say a few months ... I suppose that the only thing we can do is waiting for official news. time will tell.

Bitcoin is a participatory system which ought to respect the right of self determinism of all of its users - Gregory Maxwell.
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November 25, 2013, 10:32:23 AM
 #23116

Ok the Noob , (thats me) got it working....

So i upgraded the modules and my saturn is hashing at a jupiter speed ...only one prob ...the front fans on casing have stopped working ...any idea why and solution ?

unplugged connectors ?

No man ..checked already ......what could be any other reason ......
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November 25, 2013, 10:51:55 AM
 #23117

ck, can you elaborate a little on the difference in behaviour & reporting between the 3.8.2 tuned and non-tuned on a KnC miner?
Reporting between the two is identical.

The tuned one simply changes the decision making process about when to turn a core off and back on. Firstly it turns all cores on every time it's starting. However it turns cores off very quickly instead of after many errors, but turns cores off in a staggered fashion a few seconds apart. Then it turns them back on after only a minute, but will only turn cores back on if no core on/off has happened for the last minute staggering them much more to turn them back on. My observations were that turning dud cores off always helps the hashrate so making it easier to turn cores off made sense, but with rapid changes to the number of cores on/off, the power going to the units changes wildly when in fact the device will be more stable if it only ever changes power requirements slowly, hence the changes. It also increases the duration cores are off every time they fail before disabling them permanently (for that run of cgminer).

Anyway I find the hashrate and consequently the hardware error rate keeps improving over time as only the decent cores are left hashing, and cores that are borderline turn on and off intermittently in a staggered way that doesn't change the power requirements dramatically.

Excellent work ck, I have about 16 cores that have never worked in any firmware version, currently they just go on and off all the time and if this is impacting the rest of the system sounds like a good fix.

OT: 20130821 Uptime 96d Smiley

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November 25, 2013, 10:58:30 AM
 #23118

not enough power?

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November 25, 2013, 11:03:25 AM
 #23119

Sometime today mmpool went down or got DDOS attacked or something, bad gateway error in nginx trying to view my account.

Whenever I try to start my Saturn mining, it says Halted (Check Miner Settings).

I have checked my miner settings, I checked they still say the same connect info for mmpool.

But it just keeps saying it halted.

It had not said that when I first found out mmpool was down. It just had crazy-low temperature for its purported mining speed.

I added my p2pool as a second pool, but p2pool is broken nowadays it seems (endless cries of too many open files), so I removed p2pool leaving only mmpool and got this halted thing. So I deleted that too, reset to factory settings, and input mmpool again.

Still get this damn halted thing.

Looked at the manual edit, the syntax looks fine.

Reloaded 0.99 firmware and rebooted. Still the same error.

What is going on?

-MarkM-

EDIT: Power-cycling the thing fixed it.

Browser-launched Crossfire client now online (select CrossCiv server for Galactic  Milieu)
Free website hosting with PHP, MySQL etc: http://hosting.knotwork.com/
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November 25, 2013, 11:12:55 AM
 #23120

Sometime today mmpool went down or got DDOS attacked or something, bad gateway error in nginx trying to view my account.

Whenever I try to start my Saturn mining, it says Halted (Check Miner Settings).

I have checked my miner settings, I checked they still say the same connect info for mmpool.

But it just keeps saying it halted.

It had not said that when I first found out mmpool was down. It just had crazy-low temperature for its purported mining speed.

I added my p2pool as a second pool, but p2pool is broken nowadays it seems (endless cries of too many open files), so I removed p2pool leaving only mmpool and got this halted thing. So I deleted that too, reset to factory settings, and input mmpool again.

Still get this damn halted thing.

Looked at the manual edit, the syntax looks fine.

Reloaded 0.99 firmware and rebooted. Still the same error.

What is going on?

-MarkM-

If u use the dsl modem just turn him off and on with new dynamics IP it will solve the issue
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