Avalon ASIC users thread

[-ck]

Auto tries to keep HW errors below 1.5%. Are you sure you're not mining at a higher diff?

So the shown HW errors are a multiple of the the diff mining at?
having a higher percentage

cgminer restarted in the night, MHz is again at 341

I'm getting a high rate of rejects from the pool so cgminer is showing me nearly 79GHash/s but on the pool bitparking its only around 71GHasch/s like it was at 300 MHz?
watching this

The hardware errors need to be divided by the diff... I'm absolutely sure you're not at 10-20% errors.

[fhh]

so everything is fine with HW 1,2%

but I got a lot of rejected shares from bitparking about 10% the the gain on hashrate with 341 MHz was nearly eaten up

now running at fixed 325 MHz and no rejected shares

[BenTuras]

Can anyone think of a reason not to get this PSU for a 3 module silver and a 3 module black Avalon with overclocking intentions ?
http://www.nexustek.nl/Nexus_RX-1K_Modular_Quiet_Power_Supply_1000W.htm
single rail 12V 80A
ATX 20+4 pins
ATX12V/EPS12V 4+4 pins
4x PCI-E 6+2 pins (only 2 will be used)
Case dimensions - W x H x D (mm) 150 x 86 x 165

TIA for your thoughts!

[dogie]

Can anyone think of a reason not to get this PSU for a 3 module silver and a 3 module black Avalon with overclocking intentions ?
http://www.nexustek.nl/Nexus_RX-1K_Modular_Quiet_Power_Supply_1000W.htm
single rail 12V 80A
ATX 20+4 pins
ATX12V/EPS12V 4+4 pins
4x PCI-E 6+2 pins (only 2 will be used)
Case dimensions - W x H x D (mm) 150 x 86 x 165

TIA for your thoughts!

1) Its not major branded
2) It can only provide 900W on the 12V. You'll see some PSUs rated at 1KW providing 1100W. So consider this an 850W, I wouldn't push it much more.
3) Don't expect it to last 10 years

[bitdaniel]

Something is wrong.
Cgminer says 80 GH/s advantage but Slushs pool only 70 GH/s...

[fhh]

Something is wrong.
Cgminer says 80 GH/s advantage but Slushs pool only 70 GH/s...

take a look in the rejects in cgminer Status


3.1.1 crashed after about 5 hours running very constantly @325MHz
will now give 350 @ try

[dogie]

Something is wrong.
Cgminer says 80 GH/s advantage but Slushs pool only 70 GH/s...

Pools are just estimates. As long as the shares match on cgminer and pool everything is okay

[-ck]

I've uploaded new firmware

http://ck.kolivas.org/apps/cgminer/avalon/20130626-1/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin

This one includes a minor calculation bug fix internally, and I changed the web UI to allow you to discretely set any frequency you like instead of the drop-down box, changing the default from 282 to 300 since I don't think anyone runs these at 282 any more. This will allow you to manually fine tune it yourself, should you find a sweet spot for your hardware. I now have the highest hashrate I've ever had on a stock batch 2 at 83.7GH so far (but it's been only 20 mins so that might be just luck). EDIT: it was just luck, but it's still never been higher.

[jspielberg]

ckolivas -

Do you think generated heat or the power capacity of all the other chips is causing instability on these overclocked machines?

[-ck]

ckolivas -

Do you think generated heat or the power capacity of all the other chips is causing instability on these overclocked machines?

My guess is not enough voltage since no amount of cooling can get them much higher than 350 reliably.

[mtbitcoin]

... and I changed the web UI to allow you to discretely set any frequency you like instead of the drop-down box, changing the default from 282 to 300 since I don't think anyone runs these at 282 any more. This will allow you to manually fine tune it yourself, should you find a sweet spot for your hardware.

thanks! You're the man  

[server]

350 and pretty cool without airco



(1 fan on max rpm)

[psjw4450]

Just noticed one of the three fans stopped working on my avalon.  Opened up the case and found that the wire wiggled itself loose.  Keep an eye on your fans. 

[loshia]

350 and pretty cool without airco



(1 fan on max rpm)

With pretty cool ambient temps also I guess your room temperature is about 15 Celsius?

[server]

With pretty cool ambient temps also I guess your room temperature is about 15 Celsius?

I wish, no it's the basement but it's 20+ (near Temp2) (sorry, near Temp1...duh..)

[Elokane]

I've uploaded new firmware

http://ck.kolivas.org/apps/cgminer/avalon/20130626-1/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin

This one includes a minor calculation bug fix internally, and I changed the web UI to allow you to discretely set any frequency you like instead of the drop-down box, changing the default from 282 to 300 since I don't think anyone runs these at 282 any more. This will allow you to manually fine tune it yourself, should you find a sweet spot for your hardware. I now have the highest hashrate I've ever had on a stock batch 2 at 83.7GH so far (but it's been only 20 mins so that might be just luck). EDIT: it was just luck, but it's still never been higher.

Doesn't seem to start mining if I input a non-standard number. I removed the --auto option and changed to 358 and 345 on two different miners and they never began hashing.
Switching back to 350 (with or without auto) makes them start immediately again.

[candoo]

      case 300:
         buf[6] = 0x63;
         buf[7] = 0x09;
         break;
      case 325:
         buf[6] = 0x28;
         buf[7] = 0x0a;
         break;
      case 350:
         buf[6] = 0xf0;
         buf[7] = 0x0a;
         break;
      case 375:
         buf[6] = 0xb8;
         buf[7] = 0x0b;
         break;


Does anybody knows ALL buff 6 & 7 numbers for all frequencies?

[-ck]

I've uploaded new firmware

http://ck.kolivas.org/apps/cgminer/avalon/20130626-1/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin

This one includes a minor calculation bug fix internally, and I changed the web UI to allow you to discretely set any frequency you like instead of the drop-down box, changing the default from 282 to 300 since I don't think anyone runs these at 282 any more. This will allow you to manually fine tune it yourself, should you find a sweet spot for your hardware. I now have the highest hashrate I've ever had on a stock batch 2 at 83.7GH so far (but it's been only 20 mins so that might be just luck). EDIT: it was just luck, but it's still never been higher.

Doesn't seem to start mining if I input a non-standard number. I removed the --auto option and changed to 358 and 345 on two different miners and they never began hashing.
Switching back to 350 (with or without auto) makes them start immediately again.

Doh, forgot to update part of my build process. Will build another firm shortly, sorry.

[-ck]

I've uploaded new firmware

http://ck.kolivas.org/apps/cgminer/avalon/20130626-1/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin

This one includes a minor calculation bug fix internally, and I changed the web UI to allow you to discretely set any frequency you like instead of the drop-down box, changing the default from 282 to 300 since I don't think anyone runs these at 282 any more. This will allow you to manually fine tune it yourself, should you find a sweet spot for your hardware.

New binary which really does what that one was supposed to:

http://ck.kolivas.org/apps/cgminer/avalon/20130627/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin

I tested it with non standard values. It has sanity checking to prevent values <256 and >450 (hah!), but the usual warnings apply

It also has the more relaxed timeouts which some people found allowed them to go to higher frequencies. See how you go, and watch for higher rejects than normal as a sign the timeout is too long.

[kaerf]

I've uploaded new firmware

http://ck.kolivas.org/apps/cgminer/avalon/20130626-1/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin

This one includes a minor calculation bug fix internally, and I changed the web UI to allow you to discretely set any frequency you like instead of the drop-down box, changing the default from 282 to 300 since I don't think anyone runs these at 282 any more. This will allow you to manually fine tune it yourself, should you find a sweet spot for your hardware.

New binary which really does what that one was supposed to:

http://ck.kolivas.org/apps/cgminer/avalon/20130627/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin

I tested it with non standard values. It has sanity checking to prevent values <256 and >450 (hah!), but the usual warnings apply

It also has the more relaxed timeouts which some people found allowed them to go to higher frequencies. See how you go, and watch for higher rejects than normal as a sign the timeout is too long.

thanks, con.

the latest firmware seems to fix the hashrate disparity between Avalon's console and pool stats...at least for me anyway.