Hi there!
I have some S4 running at BTCGuild (2048 diff) and some at another pool (around 1700 diff, varying). The ones at Guild are all showing zero bestshare, the ones at the other pool are showing actual bestshare values. Hash rate seems good, better actually at BTCGuild than the other pool. Does anyone have an idea what could be the bestshare problem?
Thanks!
Topic: ANTMINER S4 Discussion and Support Thread - page 61. (Read 301481 times)
I have a S4 B1 and S4 B2. The S4 B1 is working great but the new B2 that i got in a couple weeks ago worked great for the first few days now I cant get it to hash more than a couple hours. The box would stop hashing but it would stay on, the fans on with a blank (but lit) LCD screen.
I re-seated the SD card and it worked for about 10 hours and started doing the same thing. It works if I turn the power off and turn it back on, but only hashes for a couple hours.
I got a new SD card and flashed the image from the original SD and that worked for a few hours and then it stopped hashing.
I emailed tech support and they sent me an image that I flashed to the new SD card and the same issue.
This is frustrating! I know it works, I just dont understand why it keeps stopping.
I re-seated the SD card and it worked for about 10 hours and started doing the same thing. It works if I turn the power off and turn it back on, but only hashes for a couple hours.
I got a new SD card and flashed the image from the original SD and that worked for a few hours and then it stopped hashing.
I emailed tech support and they sent me an image that I flashed to the new SD card and the same issue.
This is frustrating! I know it works, I just dont understand why it keeps stopping.
well I thought I had a fix to this but it started happening after 24 hours. I have been in touch with BITMAIN tech support and I am getting frustrated. I have asked for a RMA or a replacement motherboard and power supply to try. I think the hashing blades are OK as I have disconnected them one by one and they hash fine for 30 hours. However, when I connected all 4 of them together the unit stops hashing after a few hours but is still on and I can ping/manage the device via it's IP address. I dont see any "xxxxxxxxx" in the "miner status" screen.
I think it is the power supply, i think the load is too much and one time i heard a click when it stopped hashing. I have another S4 but it uses the PCI-E power supply where this new S4 does not, so i can't test that.
It hashes fine with just 3 blades hashing, so that is what I have running now for the past few days so I can get some value out of this S4. I hope that BITMAIN helps me on this one. I have not had any major issues with my other S4 or my S3's. I really do like BITMAIN products...
my s4 antminer have just arrived a few hour ago and this is its status . is it ok?
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
It's not ok.
Your diff is not good (64) and your pool won't reward you correctly.
You must set the minimal difficulty to 2048 in your pool settings. If your pool doesn't allow that,
you have to change the pool for another one (bitminter, BAN, slush, ...)
now i try bitminter change difficulty to 2048 and diff is 2.05K is it correct?
Yes that's correct. In the future double check the hash rate displayed on your pool to make sure its the same or near enough what the miner is displaying. After all, what your pool displays is what you end up getting paid on.
my s4 antminer have just arrived a few hour ago and this is its status . is it ok?
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
It's not ok.
Your diff is not good (64) and your pool won't reward you correctly.
You must set the minimal difficulty to 2048 in your pool settings. If your pool doesn't allow that,
you have to change the pool for another one (bitminter, BAN, slush, ...)
now i try bitminter change difficulty to 2048 and diff is 2.05K is it correct?
my s4 antminer have just arrived a few hour ago and this is its status . is it ok?
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
It's not ok.
Your diff is not good (64) and your pool won't reward you correctly.
You must set the minimal difficulty to 2048 in your pool settings. If your pool doesn't allow that,
you have to change the pool for another one (bitminter, BAN, slush, ...)
Good catch! Did not notice that...
my s4 antminer have just arrived a few hour ago and this is its status . is it ok?
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
It's not ok.
Your diff is not good (64) and your pool won't reward you correctly.
You must set the minimal difficulty to 2048 in your pool settings. If your pool doesn't allow that,
you have to change the pool for another one (bitminter, BAN, slush, ...)
my s4 antminer have just arrived a few hour ago and this is its status . is it ok?
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
Looks OK,
But I would advise to also set-up back-up pools 1 and 2. If your primary pool 0 goes down for whatever reason, you at least don't lose mining time (I am on a pool with several pool locations so all I did was set up the same pool three times, but with different extensions like: *.US1, *.UK1 and *.NL1...
Further more keep an eye on that "ASIC status". If those o's turn in to x's then those chips aren't functioning at best. If too much x's show up a hard reset should do the trick most of the times...
Good luck and enjoy!
thank you
first i set 2 pool and confuse about their speed when i checked at the pool website . i will set as your advice soon my s4 antminer have just arrived a few hour ago and this is its status . is it ok?
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
[IMG]
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
Looks OK,
But I would advise to also set-up back-up pools 1 and 2. If your primary pool 0 goes down for whatever reason, you at least don't lose mining time (I am on a pool with several pool locations so all I did was set up the same pool three times, but with different extensions like: *.US1, *.UK1 and *.NL1...
Further more keep an eye on that "ASIC status". If those o's turn in to x's then those chips aren't functioning at best. If too much x's show up a hard reset should do the trick most of the times...
Good luck and enjoy!
my s4 antminer have just arrived a few hour ago and this is its status . is it ok?
http://i59.tinypic.com/6srtp2.jpg
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
http://i59.tinypic.com/6srtp2.jpg
thank you for everyone who answer my question about money tranfer and bitmain delivery a few day ago
My S4 was running good for about 3 days then it started again with LCD screen going blank and stop hashing. After I hard booted, it last for another hour some times less than an hour and some times little more than an hour but it stop hashing regardless. Temperature never went up more than 53. Can anyone give me some idea? 
My S4 was running good for about 3 days then it started again with LCD screen going blank and stop hashing. After I hard booted, it last for another hour some times less than an hour and some times little more than an hour but it stop hashing regardless. Temperature never went up more than 53. Can anyone give me some idea?
I think it had something to do with ventilation. When miner was hashing continuously, weather was cold so it didn't make a difference. But weather has been unseasonably warmer and exhaust fan against the wall was blow back to PSU of the miner which cause to stop hashing. I'm not sure but once I let exhaust fan to open area, it went back to normal. I'm a genius. I was just about to say, if the unit is hard powering off then there is only one culprit.
My S4 was running good for about 3 days then it started again with LCD screen going blank and stop hashing. After I hard booted, it last for another hour some times less than an hour and some times little more than an hour but it stop hashing regardless. Temperature never went up more than 53. Can anyone give me some idea?
My S4 was running good for about 3 days then it started again with LCD screen going blank and stop hashing. After I hard booted, it last for another hour some times less than an hour and some times little more than an hour but it stop hashing regardless. Temperature never went up more than 53. Can anyone give me some idea?
I think it had something to do with ventilation. When miner was hashing continuously, weather was cold so it didn't make a difference. But weather has been unseasonably warmer and exhaust fan against the wall was blow back to PSU of the miner which cause to stop hashing. I'm not sure but once I let exhaust fan to open area, it went back to normal. I'm a genius. I was just about to say, if the unit is hard powering off then there is only one culprit.
My S4 was running good for about 3 days then it started again with LCD screen going blank and stop hashing. After I hard booted, it last for another hour some times less than an hour and some times little more than an hour but it stop hashing regardless. Temperature never went up more than 53. Can anyone give me some idea?
I think it had something to do with ventilation. When miner was hashing continuously, weather was cold so it didn't make a difference. But weather has been unseasonably warmer and exhaust fan against the wall was blow back to PSU of the miner which cause to stop hashing. I'm not sure but once I let exhaust fan to open area, it went back to normal. I'm a genius.
My S4 was running good for about 3 days then it started again with LCD screen going blank and stop hashing. After I hard booted, it last for another hour some times less than an hour and some times little more than an hour but it stop hashing regardless. Temperature never went up more than 53. Can anyone give me some idea?
If anyone is looking for coupons, I have a bunch for C1's, S3's & S4's.
S5's are announced on Bitmains site 
Looks damn interesting.
Speaking of interesting: From point-3 in the S5 specs they say, "When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed. "
Assuming the S3+'s and S4's do not have fault limits monitoring the +12v supply, could this apply to them as well? (using a 9v supply)
I assume you just highly undervolt which normally increases Vcore regulator losses or pushes it out-of-band. Lower supply gives lower in/out delta.
Anyone tried serious UV/UC with a lower supply voltage?
Looks damn interesting.Speaking of interesting: From point-3 in the S5 specs they say, "When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed. "
Assuming the S3+'s and S4's do not have fault limits monitoring the +12v supply, could this apply to them as well? (using a 9v supply)
I assume you just highly undervolt which normally increases Vcore regulator losses or pushes it out-of-band. Lower supply gives lower in/out delta.
Anyone tried serious UV/UC with a lower supply voltage?
S3 and S4 has DC/DC so I doubt this approach will still work.
Questions are, are the low volt-in limit monitors in pert-near all regulator chips taken advantage of (preventing running that low in) and is the regulator circuit setup to handle those conditions if lower supply voltage is allowed?
If I was designing the Vcore regulator circuit for S3+ and S4's, yes would lock out on supply under-volt and for initial design targets rather doubt that last part.
S5's are announced on Bitmains site Looks damn interesting.
Speaking of interesting: From point-3 in the S5 specs they say, "When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed. "
Assuming the S3+'s and S4's do not have fault limits monitoring the +12v supply, could this apply to them as well? (using a 9v supply)
I assume you just highly undervolt which normally increases Vcore regulator losses or pushes it out-of-band. Lower supply gives lower in/out delta.
Anyone tried serious UV/UC with a lower supply voltage?
Looks damn interesting.Speaking of interesting: From point-3 in the S5 specs they say, "When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed. "
Assuming the S3+'s and S4's do not have fault limits monitoring the +12v supply, could this apply to them as well? (using a 9v supply)
I assume you just highly undervolt which normally increases Vcore regulator losses or pushes it out-of-band. Lower supply gives lower in/out delta.
Anyone tried serious UV/UC with a lower supply voltage?
S3 and S4 has DC/DC so I doubt this approach will still work.
S5's are announced on Bitmains site Looks damn interesting.
Speaking of interesting: From point-3 in the S5 specs they say, "When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed. "
Assuming the S3+'s and S4's do not have fault limits monitoring the +12v supply, could this apply to them as well? (using a 9v supply)
I assume you just highly undervolt which normally increases Vcore regulator losses or pushes it out-of-band. Lower supply gives lower in/out delta.
Anyone tried serious UV/UC with a lower supply voltage?
Looks damn interesting.Speaking of interesting: From point-3 in the S5 specs they say, "When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed. "
Assuming the S3+'s and S4's do not have fault limits monitoring the +12v supply, could this apply to them as well? (using a 9v supply)
I assume you just highly undervolt which normally increases Vcore regulator losses or pushes it out-of-band. Lower supply gives lower in/out delta.
Anyone tried serious UV/UC with a lower supply voltage?
"Hash Rate: 2,000GH/s guaranteed" - hm, wondering how Bitmain fulfills this "guarantee" if the miners show a lower hashrate?
I can tell you from experience it's not guaranteed. If you're using it on a pool or coin that does frequent work restarts, like p2pool, you won't get 2,000 GH/s. Just like the S2, it does not like regular work restarts.
M
Hm, my average is 1.8863636364 TH/s over two weeks. Tried on several pools. So it is 0.1136363636 below guaranteed hashrate. With 6 S4, this means that I loose about 20 TH/s per month. So if there would be a guarantee, they should reimburse me for this :-)
Can you post a status screenshot?
"Hash Rate: 2,000GH/s guaranteed" - hm, wondering how Bitmain fulfills this "guarantee" if the miners show a lower hashrate?
I can tell you from experience it's not guaranteed. If you're using it on a pool or coin that does frequent work restarts, like p2pool, you won't get 2,000 GH/s. Just like the S2, it does not like regular work restarts.
M
Hm, my average is 1.8863636364 TH/s over two weeks. Tried on several pools. So it is 0.1136363636 below guaranteed hashrate. With 6 S4, this means that I loose about 20 TH/s per month. So if there would be a guarantee, they should reimburse me for this :-)
thats 94.3% of spec - only about 5% under spec, and you could likely increase frequency slightly to get a full 2TH
"Hash Rate: 2,000GH/s guaranteed" - hm, wondering how Bitmain fulfills this "guarantee" if the miners show a lower hashrate?
I can tell you from experience it's not guaranteed. If you're using it on a pool or coin that does frequent work restarts, like p2pool, you won't get 2,000 GH/s. Just like the S2, it does not like regular work restarts.
M
Hm, my average is 1.8863636364 TH/s over two weeks. Tried on several pools. So it is 0.1136363636 below guaranteed hashrate. With 6 S4, this means that I loose about 20 TH/s per month. So if there would be a guarantee, they should reimburse me for this :-)
My S4s work well with Eligius and ckpool. They get flaky with westhash and p2pool. (But when westhash was paying good, it didn't matter.)
I also run them through Slush's proxy for ckpool and Eligius. Because I have other miners pointed to the proxy as well, my worksize jumps up pretty quick for Eligius to solve the low worksize problem the S4s have. On ckpool I set my starting work size manually, so no issues there.
Have no doubt, S4s are picky. But if you point them to a pool they like, they work pretty well.
M
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