Avalon ASIC users thread - page 96. | Bitcointalksearch.org

silverston

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Quote from: CoinHoarder on August 17, 2013, 02:52:42 PM

Quote from: silverston on August 17, 2013, 02:21:04 PM

Quote from: tarui on August 17, 2013, 02:18:46 PM

anyone tried replacing the thermal paste between the chips and the heatsink?

or adding thermal paste between the heatsink and the casing (where the heatsinks are mounted onto the case) ?

I am

There are a couple guys I've seen do this. Not sure of a link tho, you could prob. use search. It did improve chip temperatures.

it did improve more stable overclocking

CoinHoarder

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In Cryptocoins I Trust

Quote from: silverston on August 17, 2013, 02:21:04 PM

Quote from: tarui on August 17, 2013, 02:18:46 PM

anyone tried replacing the thermal paste between the chips and the heatsink?

or adding thermal paste between the heatsink and the casing (where the heatsinks are mounted onto the case) ?

I am

There are a couple guys I've seen do this. Not sure of a link tho, you could prob. use search. It did improve chip temperatures.

mdbssm

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Quote

What's your hashrate?

Batch3 4module 1200wPSU, 110.8 GH/s, 352-353 MHz, 0.3% reject rate, 1.75% HW errors
Batch3 4module stock PSU, 111.6 GH/s, 355 MHz, 0.2% reject rate, 0.94% HW errors

The new FW fixed a high reject rate problem on the first unit. Was running 2-3% rejects on the 0703 firmware.

silverston

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Quote from: tarui on August 17, 2013, 02:36:09 PM

What's your hashrate?

after 35 min is 86Gh Shocked

silverston

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Quote from: tarui on August 17, 2013, 02:35:05 PM

Quote from: silverston on August 17, 2013, 02:21:04 PM

Quote from: tarui on August 17, 2013, 02:18:46 PM

anyone tried replacing the thermal paste between the chips and the heatsink?

or adding thermal paste between the heatsink and the casing (where the heatsinks are mounted onto the case) ?

I am

So what did u do? Replace thermal paste or put thermal paste between hs and case?
What kind of thermal paste did use? Non conductive?

replaced the thermal pad between the board and the heatsink on the thermal paste. used Arctic Ceramic and MX-2

tarui

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Quote from: mdbssm on August 17, 2013, 02:19:29 PM

Just watch the freq carefully when using --avalon-auto. New firmware is much more aggressive in overclocking.

After 1.5 hrs on a B3 4M unit with stock PSU, the HW error rate started climbing rapidly while running @360 MHz (6%+ error rate over the runtime, up from 1.7% minutes earlier). Clock speed was not ramping to down to compensate.

Now using --avalon-freq 345-355 to see if that prevents a runaway.

And before anyone says it, yes that unit is getting a PSU swap later this weekend.

What's your hashrate?

tarui

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Quote from: silverston on August 17, 2013, 02:21:04 PM

Quote from: tarui on August 17, 2013, 02:18:46 PM

anyone tried replacing the thermal paste between the chips and the heatsink?

or adding thermal paste between the heatsink and the casing (where the heatsinks are mounted onto the case) ?

I am

So what did u do? Replace thermal paste or put thermal paste between hs and case?
What kind of thermal paste did use? Non conductive?

mdbssm

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Activity: 182

Merit: 100

Quote from: silverston on August 17, 2013, 02:22:56 PM

Quote from: mdbssm on August 17, 2013, 02:19:29 PM

Just watch the freq carefully when using --avalon-auto. New firmware is much more aggressive in overclocking.

After 1.5 hrs on a B3 4M unit with stock PSU, the HW error rate started climbing rapidly while running @360 MHz (6%+ error rate over the runtime, up from 1.7% minutes earlier). Clock speed was not ramping to down to compensate.

Now using --avalon-freq 345-355 to see if that prevents a runaway.

And before anyone says it, yes that unit is getting a PSU swap later this weekend.

we'll see. my power supply already replaced.

My other B3 unit with an external 1200w PSU is behaving fine.

silverston

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Quote from: mdbssm on August 17, 2013, 02:19:29 PM

Just watch the freq carefully when using --avalon-auto. New firmware is much more aggressive in overclocking.

After 1.5 hrs on a B3 4M unit with stock PSU, the HW error rate started climbing rapidly while running @360 MHz (6%+ error rate over the runtime, up from 1.7% minutes earlier). Clock speed was not ramping to down to compensate.

Now using --avalon-freq 345-355 to see if that prevents a runaway.

And before anyone says it, yes that unit is getting a PSU swap later this weekend.

we'll see. my power supply already replaced.

silverston

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Activity: 952

Merit: 502

SAPG Pre-Sale Live on Uniswap!

Quote from: tarui on August 17, 2013, 02:18:46 PM

anyone tried replacing the thermal paste between the chips and the heatsink?

or adding thermal paste between the heatsink and the casing (where the heatsinks are mounted onto the case) ?

I am

mdbssm

full member

Activity: 182

Merit: 100

Just watch the freq carefully when using --avalon-auto. New firmware is much more aggressive in overclocking.

After 1.5 hrs on a B3 4M unit with stock PSU, the HW error rate started climbing rapidly while running @360 MHz (6%+ error rate over the runtime, up from 1.7% minutes earlier). Clock speed was not ramping to down to compensate.

Now using --avalon-freq 345-355 to see if that prevents a runaway.

And before anyone says it, yes that unit is getting a PSU swap later this weekend.

tarui

sr. member

Activity: 294

Merit: 250

anyone tried replacing the thermal paste between the chips and the heatsink?

or adding thermal paste between the heatsink and the casing (where the heatsinks are mounted onto the case) ?

silverston

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Activity: 952

Merit: 502

SAPG Pre-Sale Live on Uniswap!

looks like the new firmware is super, but the flashing orange LED annoying. Is this normal?

fhh

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I also did a crazy remote session;) upload speed at actual place is to slow, so I always got a timeout. so I got a teamviewer session to an other remote place with faster internet connection and did the fw upload over this connection

hitting 360 MHz after few minutes - very nice! with 20130703 it was toggeling in the range of 354-358
will see if this is going on;)

set --avalon-fan 70-100 but the fans stayed at around 800rpm until it was over target temp -> then speeding up

can anyone confirm this behavior?

mdbssm

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Quote from: ProfMac on August 17, 2013, 01:28:47 PM

Quote from: -ck on August 17, 2013, 11:51:32 AM

New firmware:

http://ck.kolivas.org/apps/cgminer/avalon/20130818/

Higher hashrate with avalon-auto.

You can now use d for timeout instead of a number in avalon-options when manually configuring to allow cgminer to automatically determine the optimal timeout.

I flashed 20130818 to an Avalon batch #2 at 11:20 CDT and kept the old settings. I did not power off the system. It has been running 58 minutes.

The Avalon now is at 350 MHz, up from it's typical 343-347 MHz. Both temp2 and temp3 are at 50°C, temp1 is 22°C, the basement is 60°F. This is hotter for temp2. The fans are turning significantly faster, and they seem to change speeds frequently.

I think it is too soon to interpret the eligius statistics. However, the preliminary impression is that variance is lower.

The orange led is flashing on and off at about 1 Hz. I have never seen this behavior before. I am curious what it means.

Interesting. My temps are essentially unchanged, ambient 21-22c as well.

Can't comment on LED appearance as I'm remote from my equipment at the moment.

ProfMac

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Quote from: -ck on August 17, 2013, 11:51:32 AM

New firmware:

http://ck.kolivas.org/apps/cgminer/avalon/20130818/

Higher hashrate with avalon-auto.

You can now use d for timeout instead of a number in avalon-options when manually configuring to allow cgminer to automatically determine the optimal timeout.

I flashed 20130818 to an Avalon batch #2 at 11:20 CDT and kept the old settings. I did not power off the system. It has been running 58 minutes.

The Avalon now is at 350 MHz, up from it's typical 343-347 MHz. Both temp2 and temp3 are at 50°C, temp1 is 22°C, the basement is 60°F. This is hotter for temp2. The fans are turning significantly faster, and they seem to change speeds frequently.

I think it is too soon to interpret the eligius statistics. However, the preliminary impression is that variance is lower.

The orange led is flashing on and off at about 1 Hz. I have never seen this behavior before. I am curious what it means.

Edit -->

I bet it can get better. Old config line:
--avalon-auto --avalon-freq 256-350 --avalon-temp 50

How should I incorporate the 'd' timeout option? I have the idea that --avalon-auto & --avalon-options don't always play nice together.

mdbssm

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Quote from: -ck on August 17, 2013, 11:51:32 AM

New firmware:

http://ck.kolivas.org/apps/cgminer/avalon/20130818/

Higher hashrate with avalon-auto.

You can now use d for timeout instead of a number in avalon-options when manually configuring to allow cgminer to automatically determine the optimal timeout.

Initial impression (1hr runtime): excellent. Best firmware yet. Very low rejected shares.

batch2 3module: ~85GH/s @ 359-362 MHz
batch2 4module: ~111GH/s @ 352-359 MHz

Much appreciated.

-ck

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Ruu \o/

New firmware:

http://ck.kolivas.org/apps/cgminer/avalon/20130818/

Higher hashrate with avalon-auto.

You can now use d for timeout instead of a number in avalon-options when manually configuring to allow cgminer to automatically determine the optimal timeout.

tarui

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Activity: 294

Merit: 250

Quote from: zoro on August 17, 2013, 07:34:02 AM

does anyone use 4 modules with batch1 avalons?
i see the power board PDU is different than batch2 or 3 and i wonder if it is enough to power 4 modules.

me...

it's enough

PSU's the more important part.

candoo

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Vertrau in Gott

Quote from: zoro on August 17, 2013, 07:34:02 AM

does anyone use 4 modules with batch1 avalons?
i see the power board PDU is different than batch2 or 3 and i wonder if it is enough to power 4 modules.

Yes it works pretty well. I tested it and So did the bitcoin foundation. They received a batch1 with 4 modules.

Topic: Avalon ASIC users thread - page 96. (Read 438516 times)