is it safe to set core frequency to 300Mhz (Extreme) for avalon?

allinvain

legendary

Activity: 3080

Merit: 1083

Quote from: Aseras on April 11, 2013, 09:56:06 AM

Discards are pool or protocol. In stratum/GBT you make up work as you go, if the block changes, the work is discarded. If it's stale and submitted or duplicated work, its rejected. HW errors are just that, the hardware hung doing something and had to be reset.

as long as your work is mostly accepted shares, you are good. If you see a very high % ( >10 % ) of rejected/stale or HW errors then something is wrong.

Thanks for the info Aseras!

So far I think my stats look good.

Aseras

hero member

Activity: 658

Merit: 500

Discards are pool or protocol. In stratum/GBT you make up work as you go, if the block changes, the work is discarded. If it's stale and submitted or duplicated work, its rejected. HW errors are just that, the hardware hung doing something and had to be reset.

as long as your work is mostly accepted shares, you are good. If you see a very high % ( >10 % ) of rejected/stale or HW errors then something is wrong.

allinvain

legendary

Activity: 3080

Merit: 1083

Code:

Elapsed MHSav FoundBlocks Getworks Accepted Rejected HW Utility Discarded Stale GetFailures LocalWork RemoteFailures NetworkBlocks TotalMH WU DiffA DiffR DiffS BestShare
21h 37m 6s 71194.26 0 2826 20155 79 1315 15.54 [b]5278[/b] 0 0 1424864 0 152 5.540791e+09 994.59 1289920 5056 0 631843

Bold text are the numbers that seem odd to me. Discarded 5278?! Hmm. HW 1315. It's mainly the discarded that I'm worried about. Could this be due to the pool or the avalon firmware?

I'm running 4-10.

luffy

hero member

Activity: 607

Merit: 500

godd to know that the top guys are trying to debug avalon Tongue

johnyj

legendary

Activity: 1988

Merit: 1012

Beyond Imagination

Interesting, there is a FPGA chip on that data controller

Sitarow

legendary

Activity: 1792

Merit: 1047

Quote from: Aseras on April 10, 2013, 05:10:47 PM

Quote from: allinvain on April 10, 2013, 11:02:42 AM

Aseras, question for you. What percentage of HW errors would you consider to be "OK" while running at 300 MHz. I get close to 8% at the moment. With 03-25 I got pretty much the same. Admittedly it has been only 1hr and 20 min since I flashed to 04-10 so maybe I need a longer sampling period?

A handful per hour, not more than few hundred per day. 1 hw error for several thousand diff1 shares.

The reason for the hw errors is there is a bug in Fpga controller, it cannot be fixed in software ( according to xiangfu ) but trying to find a work around. The controller won't reset on end of work and stalls apparently no matter what you do.

Ckolivas is going to rewrite the USB driver and code next week. if all goes well well have much better control soon.

Looking forward to having the HW issue resolved..

Aseras

hero member

Activity: 658

Merit: 500

Quote from: allinvain on April 10, 2013, 11:02:42 AM

Aseras, question for you. What percentage of HW errors would you consider to be "OK" while running at 300 MHz. I get close to 8% at the moment. With 03-25 I got pretty much the same. Admittedly it has been only 1hr and 20 min since I flashed to 04-10 so maybe I need a longer sampling period?

A handful per hour, not more than few hundred per day. 1 hw error for several thousand diff1 shares.

The reason for the hw errors is there is a bug in Fpga controller, it cannot be fixed in software ( according to xiangfu ) but trying to find a work around. The controller won't reset on end of work and stalls apparently no matter what you do.

Ckolivas is going to rewrite the USB driver and code next week. if all goes well well have much better control soon.

caoxg

full member

Activity: 159

Merit: 100

Winter is coming

Quote from: allinvain on April 10, 2013, 11:02:42 AM

Aseras, question for you. What percentage of HW errors would you consider to be "OK" while running at 300 MHz. I get close to 8% at the moment. With 03-25 I got pretty much the same. Admittedly it has been only 1hr and 20 min since I flashed to 04-10 so maybe I need a longer sampling period?

I got 1045 accept, 48 HW for 1 hour 14 min for one.
and 557 accept, 35 HW for 32 min for another.

allinvain

legendary

Activity: 3080

Merit: 1083

Aseras, question for you. What percentage of HW errors would you consider to be "OK" while running at 300 MHz. I get close to 8% at the moment. With 03-25 I got pretty much the same. Admittedly it has been only 1hr and 20 min since I flashed to 04-10 so maybe I need a longer sampling period?

Aseras

hero member

Activity: 658

Merit: 500

Quote from: caoxg on April 10, 2013, 10:19:54 AM

flashed to 0410 firmware just now.

the process is smooth, and the cgminer got upgrade. worked ok at 300Mhz for 10 minutes.

Still have some HW ( maybe cause I'm working at 300Mhz).
Still many rejects with slush's pool ( but all other pool is ok. ozco, btcguild)

Before flash, the hashrate average is 70-71 G each. now one is 67G and one is 71G.

Will keep monitoring and report later.

the new flash and cgminer reimplement the miner worker threads.

https://github.com/BitSyncom/cgminer/commit/6c5c6e99a32315af9ee345830a10fd770fa615b8

it makes the work numbers different. It is much more consistent now. Before work would return kinda at random, you you'd see swings between high values and lower ones.

caoxg

full member

Activity: 159

Merit: 100

Winter is coming

flashed to 0410 firmware just now.

the process is smooth, and the cgminer got upgrade. worked ok at 300Mhz for 10 minutes.

Still have some HW ( maybe cause I'm working at 300Mhz).
Still many rejects with slush's pool ( but all other pool is ok. ozco, btcguild)

Before flash, the hashrate average is 70-71 G each. now one is 67G and one is 71G.

Will keep monitoring and report later.

Aseras

hero member

Activity: 658

Merit: 500

new build fixes the delay when starting. It is also cgminer up to 2.11.4 code. It fixes many bugs. It greatly reduces rejects and HW errors.

safe to keep settings.

If you want to know what was changed, simply look at the git

https://github.com/BitSyncom/cgminer/tree/avalon

https://github.com/BitSyncom/cgminer-openwrt-packages

ewibit

legendary

Activity: 2955

Merit: 1049

Quote from: zero-asic on April 10, 2013, 05:10:25 AM

I'm testing it on two units right now. So far it doesn't hang after I update the cgminer config in the gui and it updates faster.

is it save Keep settings?

zero-asic

member

Activity: 79

Merit: 10

Quote from: PuertoLibre on April 10, 2013, 02:10:38 AM

A new [Next] firmware has been released. Anyone brave enough to give it a test and see if all the issues have been ironed out?

http://downloads.qi-hardware.com/people/xiangfu/avalon/next-testing/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory-20130410.bin

I'm testing it on two units right now. So far it doesn't hang after I update the cgminer config in the gui and it updates faster.

allinvain

legendary

Activity: 3080

Merit: 1083

I was going to say the same thing. I'm curious to know what has been changed/fixed/updated in this latest firmware. A "CHANGELOG" file in the testing folder would be really nice.

PuertoLibre

legendary

Activity: 1890

Merit: 1003

A new [Next] firmware has been released. Anyone brave enough to give it a test and see if all the issues have been ironed out?

http://downloads.qi-hardware.com/people/xiangfu/avalon/next-testing/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory-20130410.bin

Aseras

hero member

Activity: 658

Merit: 500

Quote from: PuertoLibre on April 09, 2013, 05:02:25 PM

Quote from: Aseras on April 08, 2013, 01:00:28 PM

xiangu updated the wiki today. there's now a list of power supplies

https://en.bitcoin.it/wiki/Avalon#Comfirmed_working_PSU_list

Also a public test firmware is available here. included cgminer 2.11.4 ( there is still a bug with this one where sometimes 0 mhash happens. Is/Will be fixed soon. )
http://downloads.qi-hardware.com/people/xiangfu/avalon/next-testing/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory-20130408.bin

Aseras, Please let us know when this issue is fixed.

Will do. Ckolivas is working on it with xiangfu. My avs are limping now, my Internet is out, running on 3G until they fix it. Sucks. Probably have to drag my avalons back to work.

PuertoLibre

legendary

Activity: 1890

Merit: 1003

Quote from: Aseras on April 08, 2013, 01:00:28 PM

xiangu updated the wiki today. there's now a list of power supplies

https://en.bitcoin.it/wiki/Avalon#Comfirmed_working_PSU_list

Also a public test firmware is available here. included cgminer 2.11.4 ( there is still a bug with this one where sometimes 0 mhash happens. Is/Will be fixed soon. )
http://downloads.qi-hardware.com/people/xiangfu/avalon/next-testing/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory-20130408.bin

Aseras, Please let us know when this issue is fixed.

libertybuck

full member

Activity: 137

Merit: 100

Quote from: cypherdoc on April 08, 2013, 12:27:16 PM

however someone who posted pics, i think libertybuck, is running his psu's outside the avalon just fine and has measured temps actually lower with this configuration.

No. I did not posted it. Should be someone else.

ewibit

legendary

Activity: 2955

Merit: 1049

Quote from: Aseras on April 08, 2013, 01:59:41 PM

Newest testing firmware 20130408 has an issue when you first start or when you change pools, cgminer doesn't restart. It hangs and sits for several minutes until watchdog kills process. Then it works ok.

ok thx then I will wait Wink

Topic: is it safe to set core frequency to 300Mhz (Extreme) for avalon? (Read 6438 times)