2 cores is practically nothing. That shouldnt cause significant performance issues. That's 1% of cores not working on a die, or a couple of GH/s
but this one is performing 25% worse than normal one Good One shares 7630336 (99.78%) This Bad One shares 6264832 (99.64%) How to find out where the problem is ? In your post in the other thread you posted more data which showed a >17% HW error rate, which accounts for a lot of the under-performance. By contrast, my Saturn has well under 2% HW errors. I also noticed that ASIC board #3 is getting a lot hotter than the others - ~74C vs ~54C on the others. That might be where your problem lies. |
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Does anyone know how to turn off individual cores manually and keep them off? I'm running 0.97 and keep seeing a bunch of the same cores (2-119;2-126;etc.) getting disabled because of HW errors and then turned back on later. I think it's better to leave them turned off because they only produce HW errors and I don't think that's very productive. I have more cores running now on 0.97 but also have more HW errors, and in the end my pool hashrate is lower on average because of this.
Look at the file /config/init.d/cgminer.sh to see how to turn individual cores on and off, i.e.: # re-enable all cores
i=0
while [[ $i -lt 192 ]] ; do
i2cset -y 2 0x2$p $i 1
i=$((i+1))
done
You would have to edit that cgminer.sh file to keep them off, though. By default, it will re-enable what it can whenever it restarts cgminer. |
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Awesome accomplishment  Congrats to all concerned! Has anyone gotten the I2C to work, so maybe the K64 will work too? |
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You are very defensive. Normally I just ignore all the voodoo I see people posting in this thread as ways to increase hash rate, but when it's particularly egregious, like claiming a 'warm BBB' can negatively affect hashing, then I have to say something.
Sorry to get your hackles up, but don't post nonsense if you don't want to get corrected.
one more time.... I never said anything about BBB heat and performance..please go find a statement of me ever saying that.. you chose to associate me saying 'it' with BBB heat and bad performance and not with you blasting someone.. that was my context.. go re-read with THAT in mind you are the one posting nonsense and terrible cognitive skills - you just don't want to admit you jumped to conclusions and thought a simple point A to point B.. I was talking about you, not to you when I replied got it? I have no idea what you mean here. I have not 'blasted' anyone. You are the one with poor cognitive skills and a definite lack of reading comprehension. I initially just asked the simple question of 'how could a warm BBB cause hashing problems?'. The statement was attributed to you by others, and you made a subsequent post (that I quoted above) where you seemed to acknowledge that you agreed with it. If that's not your position, fine. You are the one who went on the attack here. I have no problem with you. Calm down. |
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[
little tired of proving everything for people...
Well, to be honest, making goofy claims like 'hash rate goes down when the BBB is warm' w/o any supporting facts does not do a lot for your credibility. re-read my posts.. i talked about lowering the fans to the crossbars for the asic chips/boards to lower temps 5-7C.. i never spoke of what you said but why should you go back and read anything right? if someone takes something out of context and you believe it, I cant stop you I have read this whole thread. I can't claim to have memorized every post you've made, but I took this post:
I would be interested to hear what the theory is behind that "field experience". On the face of it, that sounds ridiculous. I have seen stranger things though, so I am not gonna call BS just yet.
which was the main reason I didn't post it to the boards for 3 days and kept it to myself.... to indicate that you stood by this claim, and felt that after 3 days of studying the problem, you were confident enough to make it public. Did I misread you? jesus you are a waste of time.. need everything spelled out in a straight line?? I was quoted above your post about what I did in another thread...I assume everyone knows about my fan mod on the crossbars so that was the part I was referring to on 'didn't post it for three days' and the reason for THAT PARTICULAR ITEM was because of tools like you ok?? now go complain to someone else about heat and the BBB ok? You are very defensive. Normally I just ignore all the voodoo I see people posting in this thread as ways to increase hash rate, but when it's particularly egregious, like claiming a 'warm BBB' can negatively affect hashing, then I have to say something. Sorry to get your hackles up, but don't post nonsense if you don't want to get corrected. |
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[
little tired of proving everything for people...
Well, to be honest, making goofy claims like 'hash rate goes down when the BBB is warm' w/o any supporting facts does not do a lot for your credibility. re-read my posts.. i talked about lowering the fans to the crossbars for the asic chips/boards to lower temps 5-7C.. i never spoke of what you said but why should you go back and read anything right? if someone takes something out of context and you believe it, I cant stop you I have read this whole thread. I can't claim to have memorized every post you've made, but I took this post:
I would be interested to hear what the theory is behind that "field experience". On the face of it, that sounds ridiculous. I have seen stranger things though, so I am not gonna call BS just yet.
which was the main reason I didn't post it to the boards for 3 days and kept it to myself.... to indicate that you stood by this claim, and felt that after 3 days of studying the problem, you were confident enough to make it public. Did I misread you? |
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[
little tired of proving everything for people...
Well, to be honest, making goofy claims like 'hash rate goes down when the BBB is warm' w/o any supporting facts does not do a lot for your credibility. |
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0.97 also shows a continuous drop of hashrate for me from 500 to 470 (3 hour average eligius).
Actually.. it doesn't seem to be coming back in any previous firmware. Last value was 450 and that's where it stayed. I read compatible reports on KNC's forum. I fear 0.97 might damage bad Jupiters... Careful upgrading yours. .96 does seem to be better than .97 on good jupiters. I haven't tried it on a bad jupiter yet.. so far bad jupiters hash better on .94 'overclocked' running bfgminer but the VRMs/chips do have to take a beating.. perhaps heatsinks? to 'cure' modules, remove the asic_test file and install .96, run enable cores and few times and reboot. It should do its 1-2 min asic tests and then reboot itself. you should have more enabled cores again How do I remove that asic_test file?? +1 Please some help on this. I can't seem to find the answer. I'm not sure why you need to remove this file - I would think it would just overwrite it, but if you really want to remove it: SSH into the machine, then: # cd /config # rm asic_test The '#' is the command line prompt - don't type that. |
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I would be interested to hear what the theory is behind that "field experience". On the face of it, that sounds ridiculous. I have seen stranger things though, so I am not gonna call BS just yet.
which was the main reason I didn't post it to the boards for 3 days and kept it to myself.... You should do some experiments heating the BBB with a hairdryer or something, and see if you observe directly a change in hashrate. |
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Did you try firmware 0.90 then enablecores.bin? Are you forcing air onto the BBB? A warmish BBB will drop your hashrate.
Why would a "warmish" BBB drop your hashrate? Field experience. Several board members report that adding intake airflow at the front bottom improve prformance. Look for DPoS posts in this and "knc jupiter first impression" thread I would be interested to hear what the theory is behind that "field experience". On the face of it, that sounds ridiculous. I have seen stranger things though, so I am not gonna call BS just yet. |
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Did you try firmware 0.90 then enablecores.bin? Are you forcing air onto the BBB? A warmish BBB will drop your hashrate.
Why would a "warmish" BBB drop your hashrate? |
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Can you please explain the namecoin payout method on eligius?
It seems to be more or less random. Wizkid does it manually, I think. I typically get a payment every day or two. |
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You could limit the numbers of cores used to mine, but not the percent of CPU.
If you have a Quadcore, you can use 2 cores which is 50%.
setgenerate true 2
i have 8th . setgenerate true=2 or setgenerate=2 doesnt work still have 100% usage If you are doing it from your .conf file, use "gen=1" and "genproclimit=2". If you are doing it from the debug window of the client, use "setgenerate true 2". |
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User705: we will take a signed declaration of the customer receiving goods, with copy of his ID.
It does not matter what kind of reasonable argument or the amount of proof you may have. There are many scammers using stolen Paypal and Credit Cards purchasing digital currency and mining equipment. eBay/PayPal regards anything "Bitcoin or Litecoin" related to be in violation of their policy. Therefore, when you get a couple thousand dollar charge-back, PayPal is going to say fuck you, and then as as even more slap in the face, they will freeze your account and make you sign an affidavit. I will NEVER sell anything bitcoin related on eBay again. It is ridiculous. Here is the letter they sent me when they froze my account:  This. Please please please listen to those of us who have had to do this. I was also told I had to sign a affidavit... to bad it never came in the mail  I Am Not A Lawyer, but the policy described only seems to forbid selling bitcoins, not mining equipment. I can definitely understand why they can't let people be exchanging currency, as that is a highly-regulated business that they surely don't want to get involved with. Did they send this letter out in response to selling bitcoins, or gear? It doesn't say anything about anything except actual bitcoin exchange. |
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Wow. The newest firmware from KnC (0.97) makes their miners work FLAWLESSLY with p2pool! The difference is staggering. Before p2pool was literally unusable with my Saturn - but now I am getting close to max hashrate  I wouldn't say flawlessly...but it does look much better. I'll run 24 hrs and post results. Yeah, after a few hours of letting it run, I'd agree that it's not flawless - but it is way, way better than it was. |
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0.97 seems to hate p2pool less than earlier versions did, but still there is too much hate, cannot reasonably use p2pool still.
Although not improved enough to work right with p2pool yet, 0.97 has overall been an improvement for me.
-MarkM-
I am mining on P2Pool right now with a Saturn, getting 275 GH/s with WU of 4152 right this sec. Using the web interface? Or did you go in with ssh and fiddle with the cgminer timeouts and such? (I have only been using the web interface as the ssh does not seem to like the username/password the web interface shipped with.) -MarkM- I didn't do anything out of the ordinary - just configured it via the web UI, as always. It has slowed down some over time though... Looks like I am getting a sustained 245 GH/s at the moment. WU is still high at 4136. |
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0.97 seems to hate p2pool less than earlier versions did, but still there is too much hate, cannot reasonably use p2pool still.
Although not improved enough to work right with p2pool yet, 0.97 has overall been an improvement for me.
-MarkM-
I am mining on P2Pool right now with a Saturn, getting 275 GH/s with WU of 4152 right this sec. So it's official that 2 Saturns > 1 Jupiter (not by much, but still). I got lucky with mine - all 384 cores work all the time. |
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0.97 seems to hate p2pool less than earlier versions did, but still there is too much hate, cannot reasonably use p2pool still.
Although not improved enough to work right with p2pool yet, 0.97 has overall been an improvement for me.
-MarkM-
I am mining on P2Pool right now with a Saturn, getting 275 GH/s with WU of 4152 right this sec. |
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Will the things work right with p2pool? The KnC stuff doesn't seem to like p2pool, though their latest firmware fix seemed to make it hate p2pool less than it had before.
-MarkM-
KnC miners with 0.97 firmware work flawlessly with P2Pool. I am averaging 275 GH/s with WU of 4146 on P2Pool at the moment, with a Saturn. |
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