Avalon ASIC users thread - page 87. | Bitcointalksearch.org

jspielberg

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Quote from: PuertoLibre on August 25, 2013, 08:39:45 AM

I have been trying to get solo mining going on my own. Took me a few hours to figure out the process of removing the p5 jumper (which seems to rarely be mentioned in a google search and only found in the wiki for Avalon.

Anyway....
I keep getting a message in CGminer that says "Pool 0 is not providing work fast enough". Any clue as to what this is about? (I have cgminer locally connected to the server at 127.0.0.1:xxxxport). The Avalon is direct connected via USB.

I read some obscure mentions of running some of these programs within a ramdisk or an SSD due to "a speed limitation" but the messages on online message boards don't really mention why nor anything really useful. It's hard to piece that knowledge together when people don't mention the full story in their messages.

My google-fu is weak today.

Peurto -
You should be looking through the slush/eloipool setup threads in this section. The native bitcoind isn't efficient enough to handle the hash rate. You need a pool with stratum support and thus eloipool or slush's pool. Personally I found the slush pool a lot more straight forward to implement, and it has a handy webpage to check the pool status.

https://bitcointalksearch.org/topic/avalon-users-bitcoind-and-slushsgeneralfaults-mining-pool-setup-162788

-ck

legendary

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Ruu \o/

Quote from: PuertoLibre on August 25, 2013, 08:39:45 AM

I have been trying to get solo mining going on my own. Took me a few hours to figure out the process of removing the p5 jumper (which seems to rarely be mentioned in a google search and only found in the wiki for Avalon.

Anyway....
I keep getting a message in CGminer that says "Pool 0 is not providing work fast enough". Any clue as to what this is about? (I have cgminer locally connected to the server at 127.0.0.1:xxxxport). The Avalon is direct connected via USB.

I read some obscure mentions of running some of these programs within a ramdisk or an SSD due to "a speed limitation" but the messages on online message boards don't really mention why nor anything really useful. It's hard to piece that knowledge together when people don't mention the full story in their messages.

My google-fu is weak today.

Cgminer can't solo mine to an ordinary bitcoind because it only supports getwork to a bitcoind and no bitcoind can keep up. Check the forum thread on setting up pool software (eloipool) to solo mine with an avalon if that's your intention.

PuertoLibre

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I have been trying to get solo mining going on my own. Took me a few hours to figure out the process of removing the p5 jumper (which seems to rarely be mentioned in a google search and only found in the wiki for Avalon.

Anyway....
I keep getting a message in CGminer that says "Pool 0 is not providing work fast enough". Any clue as to what this is about? (I have cgminer locally connected to the server at 127.0.0.1:xxxxport). The Avalon is direct connected via USB.

I read some obscure mentions of running some of these programs within a ramdisk or an SSD due to "a speed limitation" but the messages on online message boards don't really mention why nor anything really useful. It's hard to piece that knowledge together when people don't mention the full story in their messages.

My google-fu is weak today.

spiccioli

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nec sine labore

Quote from: spiccioli on August 18, 2013, 04:39:33 PM

Hi,

the other day I've upgraded three batch #1 three modules Avalons from 20130519 to 20130814... I've lost a good 10% of hashing capacity Sad

I've just brought them up to 20130821, it's too early to see if I've recouped my hashing power, but I've found that on a B2 avalon the orange led blinking stops around 320 MHz.

Lower than this and led blinks, my B1 ones are at 300 and all blinking... go figure!

spiccioli

tarui

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Activity: 294

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if i use 20130821, what other settings do i need to write down?

currently the firmware is 20120703 and the settings are --avalon-temp 52 --avalon-freq 350-355

I see some people setting cut off temps, etc

tarui

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Activity: 294

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Quote from: S M I L Y on August 24, 2013, 10:42:50 PM

Im running with 31k piggyback and that gives me 1.336v under load at the bottom chip.

Be aware that for me at 460mhz I am 2x the wattage as a stock Avalon! At bare MINIMUM you need a 1200watt powersupply for a 4 module unit!

I need to find out how to deal with 1600watt total at 460mhz!!!

i need to move to the north pole or pluto for that

GenTarkin

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Quote from: S M I L Y on August 24, 2013, 11:09:39 PM

Pencil trick.... Reliable... Roll Eyes

I for one would not take a pencil to my $10,000+ device.

haha, I was thinkin the same, was just curious =)
Wish there was an easier way to do it grrr..

S M I L Y

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https://www.chynge.net/

Pencil trick.... Reliable... Roll Eyes

I for one would not take a pencil to my $10,000+ device.

GenTarkin

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is it possible to do any sort of pencil trick mod to them reliably? =P I remember thats what I used to do on video cards for increased voltages.

S M I L Y

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https://www.chynge.net/

Quote from: GandalfG on August 24, 2013, 09:08:56 PM

Quote from: Bogart on August 24, 2013, 07:26:19 PM

What value resistor would I piggyback onto R10 to target 1.30V, or 1.25V?

For 1.3V (1.278V under load) I use 47k. No problem with 400MHz and 0.98% HW, Rejected 0.38%
For stability I suggest sold 2mm² wire from coil to the end of board. Top cooper layer (VDD_1.2) is too thin to carry such high currents.
Look on the picture below
https://www.dropbox.com/s/68f6k5tafw1i58f/20130825_025617-2.jpg

Im running with 31k piggyback and that gives me 1.336v under load at the bottom chip.

Be aware that for me at 460mhz I am 2x the wattage as a stock Avalon! At bare MINIMUM you need a 1200watt powersupply for a 4 module unit!

I need to find out how to deal with 1600watt total at 460mhz!!!

GandalfG

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Activity: 259

Merit: 250

Dig your freedom

Quote from: Bogart on August 24, 2013, 07:26:19 PM

What value resistor would I piggyback onto R10 to target 1.30V, or 1.25V?

For 1.3V (1.278V under load) I use 47k. No problem with 400MHz and 0.98% HW, Rejected 0.38%
For stability I suggest sold 2mm² wire from coil to the end of board. Top cooper layer (VDD_1.2) is too thin to carry such high currents.
Look on the picture below
https://www.dropbox.com/s/68f6k5tafw1i58f/20130825_025617-2.jpg

S M I L Y

member

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https://www.chynge.net/

Quote from: Bogart on August 24, 2013, 07:26:19 PM

What value resistor would I piggyback onto R10 to target 1.30V, or 1.25V?

https://bitcointalksearch.org/topic/m.2660290

Quote from: invader on July 05, 2013, 08:15:30 AM

Quote

What would it take for a volt mod? Soldering around on every single step down converter?

Yes, you need to change R9 resistor value in step-down converter, according to datasheet on TPS40193
the formula is

R9 = ( Vfb * R10 ) / ( Vout - Vfb ) , where Vfb is constant = 0.591v , R10 = 10.5k

for example, calculation for Vout = 1.2 give

R9 = ( 0.591 * 10500 ) / ( 1.2 - 0.591 ) = 6205.5 / 0.609 = 10189 , 10k resistor

in datasheet maximum Vout = 1.32

R9 = ( 0.591 * 10500 ) / ( 1.32 - 0.591 ) = 6205.5 / 0.729 = 8512 , 8.5k resistor

To make ~ 8.5k resistor from 10k you need to add in parellel 60k resistor, but i would advice you try to increase voltage in a little steps like 0.01v before you reach 1.32v and look at hw error rate.

Sorry but i cant point you now where is that resistor located, i just look at hash_unit schematics.

Quote

How far (in % of HW errors) can I go up with the frequency without risking of damaging something?

I think hw error rate 2-3% is the highest that you want to see, more than that is a waste of energy.
You can damage the chips by increasing voltage to more than 1.32v - be careful.

BitCoiner2012

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Quote from: kano on August 24, 2013, 07:28:28 PM

BitCoiner2012 - Non BTC mining discussion belongs elsewhere ... as per forum requirements.

Did you read my posts? I was not attempting to discuss alt coin mining.. I was simply asked why I could ever want such an option. The answer could be given exactly the same with only BTC involved.

kano

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Linux since 1997 RedHat 4

BitCoiner2012 - Non BTC mining discussion belongs elsewhere ... as per forum requirements.

Bogart

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What value resistor would I piggyback onto R10 to target 1.30V, or 1.25V?

BitCoiner2012

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Quote from: GenTarkin on August 24, 2013, 07:20:50 PM

Quote from: BitCoiner2012 on August 24, 2013, 07:19:08 PM

Quote from: -ck on August 24, 2013, 07:16:32 PM

Quote from: BitCoiner2012 on August 24, 2013, 07:04:24 PM

Or even better, direct X percent of mining or X many chips toward Y pools. I'd LOVE that.

I can't fathom how this level of control serves any useful purpose.

I like to mine more than BTC.

I cold split up various accounts on PPS pools, PPLNS, etc... for alts, and for BTC. Serves infinite purpose for me. I can divide my hash at desired percents, etc...

I dont even understand why you would wanna do that...ROFL

And you didn't ask either, that's fine. It is my prerogative. I happen to like diversification.

Quote from: -ck on August 24, 2013, 07:22:58 PM

Quote from: BitCoiner2012 on August 24, 2013, 07:19:08 PM

Quote from: -ck on August 24, 2013, 07:16:32 PM

Quote from: BitCoiner2012 on August 24, 2013, 07:04:24 PM

Or even better, direct X percent of mining or X many chips toward Y pools. I'd LOVE that.

I can't fathom how this level of control serves any useful purpose.

I like to mine more than BTC.

Saying that is a very good way of making me even less interested.

Cool, love the heart warming response. I'm sorry that I support other coins as well. I'll take my leave of the thread now, you fellows can have it back. Sorry for the suggestion that is apparently outrageous and out of this world to conceive that it could be useful to a miner.

-ck

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Ruu \o/

Quote from: BitCoiner2012 on August 24, 2013, 07:19:08 PM

Quote from: -ck on August 24, 2013, 07:16:32 PM

Quote from: BitCoiner2012 on August 24, 2013, 07:04:24 PM

Or even better, direct X percent of mining or X many chips toward Y pools. I'd LOVE that.

I can't fathom how this level of control serves any useful purpose.

I like to mine more than BTC.

Saying that is a very good way of making me even less interested.

GenTarkin

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Quote from: S M I L Y on August 24, 2013, 07:13:23 PM

Quote from: GenTarkin on August 24, 2013, 05:34:07 PM

Where you located? So, what do you think 1.3v @ chips would yeild, at least 400?
Also, I have upgraded the fans in the unit to 2x 5k RPM 250cfm .. Currently the avy temps read maybe 45C during day time and 35C @ night.... I know this is cooler than the chips themselves but much better than stock cooling. Do you think that would cut it?

Just did quick test of 375mhz ... stable but 6.5% HW error ... think just doin wire mod will bring that down to 2%? =)

Im in Texas. 1.3v should have no problem with 400. Im only at 1.336 and getting 460mhz.

As for cooling: If you do good thermal paste on the backside and are in a cool environment you may get away with just air cooling.

Dangit...far =( .. time in shipping to and work probably would make it just wash out the increase in hash...rofl! Wish I knew how to do this sorta shit =/
Can you comment bout the 2nd question I posted there...

Bogart

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Quote from: BitCoiner2012 on August 24, 2013, 07:04:24 PM

Honestly, I wish we coudl have as many pools as we wanted for the Balance feature. Or even better, direct X percent of mining or X many chips toward Y pools. I'd LOVE that.

That sounds like a job for miner proxy software.

GenTarkin

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Quote from: BitCoiner2012 on August 24, 2013, 07:19:08 PM

Quote from: -ck on August 24, 2013, 07:16:32 PM

Quote from: BitCoiner2012 on August 24, 2013, 07:04:24 PM

Or even better, direct X percent of mining or X many chips toward Y pools. I'd LOVE that.

I can't fathom how this level of control serves any useful purpose.

I like to mine more than BTC.

I cold split up various accounts on PPS pools, PPLNS, etc... for alts, and for BTC. Serves infinite purpose for me. I can divide my hash at desired percents, etc...

I dont even understand why you would wanna do that...ROFL

Topic: Avalon ASIC users thread - page 87. (Read 438516 times)