BITMAIN Antminer S3 support and OverClocking thread

[philipma1957]

Keeping in mind that # is a comment only, wouldn't it be better to have the comment contain hashing speed and expected watts?

Doesn't something like this

#option 'freq_value'   '1406'     #513GH/s  420W
#option 'chip_freq'     '256.25'
#option 'timeout'       '15'

end up being more useful than a comment with the frequency, when its listed under chip_freq already?

#option 'freq_value'   '1406'     # freq 256.25M  gives 513gh/s uses 420watts
#option 'chip_freq'     '256.25'
#option 'timeout'       '15'

Comments should be useful, right?

see bolded  above

  may as well be fully clear with a comment ..  we forget that there are full newbies.

long windy but clear.

what I do like is we now have a lot to pick from

256.25
250
243.25
237.5
231.25
225
218.75
212.50
206.25
200

Are you still running at 256.25?

  no errors errors errors

my batch 4 run at 231.25
my batch 6 run at 237.5 and 237.5

[JennaK]

does the kernel version matter when trying to overclock an s3?

[JennaK]

http://s11.postimg.org/fddxw6pmb/myantminers3.png

[yosscal]

Hi,
I just try to update S320140811 with frequency management.
The frequency 225 is not part of the option (I do not know why?), it goes directly from 218.75 to 237,5.
Can someone tell me which file to edit to add the 225 frequency in choice?
THX.

[JennaK]

Hi,
I just try to update S320140811 with frequency management.
The frequency 225 is not part of the option (I do not know why?), it goes directly from 218.75 to 237,5.
Can someone tell me which file to edit to add the 225 frequency in choice?
THX.

Where did you get S320140811

[windpath]

Hi,
I just try to update S320140811 with frequency management.
The frequency 225 is not part of the option (I do not know why?), it goes directly from 218.75 to 237,5.
Can someone tell me which file to edit to add the 225 frequency in choice?
THX.

Where did you get S320140811

Its available on Bitmains site. Upgrade with caution, it adds an advanced tab on miner configuration to set frequency, and does not include 225 as mentioned.

After flashing 1 ant it came back up at 100GH/s and took some serious fiddling to get back to 440GHs...

Also the asic-freq file is no longer used in the new firmware, no idea where you would add 225.

Would sure be nice if they opened up the source as required by the CGMiner license...

[JakeTri]

Hi,
I just try to update S320140811 with frequency management.
The frequency 225 is not part of the option (I do not know why?), it goes directly from 218.75 to 237,5.
Can someone tell me which file to edit to add the 225 frequency in choice?
THX.

The file with frequency values for the advanced page with miner settings is

Code:

/usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua

Look at the end of the file for the frequency list.

Here are highlighted in red the lines with new frequency not included in the stock firmware.

pb:value("13:300:0b82", translate("300M"))
pb:value("14:293.75:1706", translate("293.75M"))
pb:value("14:287.5:0b02", translate("287.5M"))
pb:value("14:281.25:1606", translate("281.25M"))
pb:value("15:275:0a82", translate("275M"))
pb:value("15:268.75:1506", translate("268.75M"))
pb:value("15:262.5:0a02", translate("262.5M"))
pb:value("16:256.25:1406", translate("256.25M"))
pb:value("16:250:0982", translate("250M"))
pb:value("16:243.75:1306", translate("243.75M"))
pb:value("17:237.5:1286", translate("237.5M"))
pb:value("17:231.25:1206", translate("231.25M"))
pb:value("18:225:0882", translate("225M"))
pb:value("18:218.75:1106", translate("218.75M (default)"))
pb:value("18:212.5:1086", translate("212.5M"))
pb:value("19:206.25:1006", translate("206.25M"))
pb:value("20:200:0782", translate("200M"))
pb:value("20:196:1f07", translate("196M"))
pb:value("20:193:0f03", translate("193M"))
pb:value("23:175:0d83", translate("175M"))
pb:value("27:150:0b83", translate("150M"))
pb:value("33:125:0983", translate("125M"))
pb:value("40:100:0783", translate("100M"))

[JennaK]

So when I put the freq to 250 I get 1 x so I decided to tame it down to 237.5 and its doing fine..
My hash rate on ghash is jumping from 200GH/s to 400GH/s is that normal?

[bobsav2121]

So when I put the freq to 250 I get 1 x so I decided to tame it down to 237.5 and its doing fine..
My hash rate on ghash is jumping from 200GH/s to 400GH/s is that normal?

NO ~!!!

[JakeTri]

Would sure be nice if they opened up the source as required by the CGMiner license...

I hope they do it soon .. I'm waiting for this to be able to play with code and see if it is possible to set frequency for each board from the miner.

[squashpile]

Just flashed.. good to go so far.
Thanks JakeTri for the info

I like it

[orviwan]

Does cgminer run at 100% cpu for anyone else?

[orviwan]

Does cgminer run at 100% cpu for anyone else?

Ah, it might be this bug:

"There is a problem, when run cgminer as a daemon, it will use 100% cpu. Hope anybody can revise this."

https://github.com/alzhao/openwrt-cgminer-antminer

[yosscal]

The file with frequency values for the advanced page with miner settings is

Code:

/usr/lib/lua/luci/model/cbi/cgminer/cgminer.lua

Look at the end of the file for the frequency list.

ok,
I edit and add the missing lines and it works perfectly . 
thank you again.

[breich]

I'm running two batch 5's off of one thermaltake smart 800W, 4 PCI-E connectors.

How significant of a risk do I run by overclocking my batch 5's to 250MHz? Temperature of the S3's are fine (44/43) but I'm not sure how real the risk of burning out the PCI-E cords is.

[CHAOSiTEC]

I'm running two batch 5's off of one thermaltake smart 800W, 4 PCI-E connectors.

How significant of a risk do I run by overclocking my batch 5's to 250MHz? Temperature of the S3's are fine (44/43) but I'm not sure how real the risk of burning out the PCI-E cords is.

since your using 4 connectors, none..

it is more if you only use 2 connectors, then its something to do with the quality of the cables..

with 4 connectors your inside of specs for the cables in regard to pcie specs

in your case, you have to look at your psu.. it might be pushing it to overclock your antminers...

[finlof]

oops.i just turned the PSU off and back on.

that's actually the easiest way to do it

[dankefoss]

Status update:
I used the latest (3rd) software update and both my miners performed poorly compared to performance with the second release. In addition, one miner that had been very stable, and while it never pulled 504 GHs on250 other than momentarily, did deliver ~480. Now with this release it would consistently drop an ASIC at 250 and 235 as well. My average at any frequency dropped to sub-430. I tried reflashing, and no change in performance. So I decided to go back to release two and now performance is back to being stable at 480-482 GHs. No ASIC are being dropped. That was about 8 hours ago, but I saw ASIC drops within the first few minute and now even the hash averages are consistent with prior performance.

I am hesitant to change back my other miner, since performance is at least consistent with the prior release.

Anyone else experiencing the same?

[omnik]

Hi,

Does this all look OK, this is my 1st asic miner?
Latest firmware...



Thanks.

[pekatete]

omnik, Yes that looks OK.
My only concern is the DiffR number of 37,000+ though for nearly 2 days that may be OK. This could mean your latency to the ghash servers is high as I have come to find out that this number represents the stale shares (at least on ghash), but since ghash only shows the last 24 hrs then you will not be able to compare now.
Otherwise, looks good! What batch was this S3 if you know?