ANTMINER S3+ Discussion and Support Thread

[Tazza]

What are you guys accomplishing by rebooting the miner every hour or when it hits a threshold?

Yeah I'd also appreciate an answer to this. Anyone?

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[klondike_bar]

What are you guys accomplishing by rebooting the miner every hour or when it hits a threshold?

Yeah I'd also appreciate an answer to this. Anyone?

Usually it's when something about the setup (the pool, the hardware, the Web connection, w/e) is inconsistent and causes the hashrate to drop or chips to be 'x' out after a few minutes or hours of operation. Reboot clears the problem until they occur again.

Imo moat hardware doesn't need this, unless you have a troublesome unit. I don't use it for any of my miners other than a bitfury system that's over 14 months old and sometimes stops hashing an individual card

[windpath]

One of mine is acting up (an S3) and I've set it to reboot every 2 hours:

* 0,2,4,6,8,10,12,14,16,18,20,22  *   *   *     /sbin/shutdown -reboot

Might be simpler as:

0 */2 * * * /sbin/shutdown -reboot

[heldertb]

Now, I'm curious, why do you want to reboot every day?  And, here's another way, put in cron or loop script to run every few minutes or hour

Code:

upsecs=`cat /proc/uptime |cut -d'.' -f1`
if [ $upsecs -gt 86400 ]
    then
        reboot
fi

Nice one! Well, my miners are in a server room somewhere I can't reach them physically, only via SSH, and since I've experienced a lot of downtime with them, mostly a reboot solves the problem. So if I want to reduce this downtime, I'll have to auto reboot the miners every 24 hours to avoid it, I've had that the miners were offline for a week...

[1Neptune]

One of mine is acting up (an S3) and I've set it to reboot every 2 hours:

* 0,2,4,6,8,10,12,14,16,18,20,22  *   *   *     /sbin/shutdown -reboot

Might be simpler as:

0 */2 * * * /sbin/shutdown -reboot

Thanks for the suggestion. Implemented. I freely admit to knowing just enough about crontab to be dangerous.

[faetos]

Anyone have any experience with BitMain's Umisoo hosting? I see the option under the shipping tab and am curious if anyone has gone that direction with their purchase.

[suchmoon]

Anyone have any experience with BitMain's Umisoo hosting? I see the option under the shipping tab and am curious if anyone has gone that direction with their purchase.

I got a few S4s hosted there. The process is confusing. Your miner gets shipped there and you have to wait for an e-mail to tell you that you have to pay the invoice for 1st month's hosting. Then wait for another e-mail to tell you to configure pools etc. The whole process took nearly a week, so I lost about 4-5 days compared to if I shipped the miners to my own colo.

User interface is clunky, you can't even see which pool is dead/alive, accept/rejects, nothing. I was kind of expecting they would give access to the actual miner's web interface, but that's not the case. I was using their own AntPool and then it stopped working, switched to backup pool and I still don't know why. My miners work at 80-90% rated speed, but that might be an S4-specific issue.

In other words, quite crappy. And pricing is not that great either, 0.13 USD per kW/h at the moment.

[faetos]

Anyone have any experience with BitMain's Umisoo hosting? I see the option under the shipping tab and am curious if anyone has gone that direction with their purchase.

I got a few S4s hosted there. The process is confusing. Your miner gets shipped there and you have to wait for an e-mail to tell you that you have to pay the invoice for 1st month's hosting. Then wait for another e-mail to tell you to configure pools etc. The whole process took nearly a week, so I lost about 4-5 days compared to if I shipped the miners to my own colo.

User interface is clunky, you can't even see which pool is dead/alive, accept/rejects, nothing. I was kind of expecting they would give access to the actual miner's web interface, but that's not the case. I was using their own AntPool and then it stopped working, switched to backup pool and I still don't know why. My miners work at 80-90% rated speed, but that might be an S4-specific issue.

In other words, quite crappy. And pricing is not that great either, 0.13 USD per kW/h at the moment.

Thank you for the update on the place. That power expense is really terrible. I would certainly be better off here at 0.10 USD for energy. I guess these types of situations are good for non-technical people that want to mine, but like you, I like direct access to the miners to make changes as I see fit. Do you have to keep them there for a certain period of time or is it just a month-2-month contract situation?

[suchmoon]

Anyone have any experience with BitMain's Umisoo hosting? I see the option under the shipping tab and am curious if anyone has gone that direction with their purchase.

I got a few S4s hosted there. The process is confusing. Your miner gets shipped there and you have to wait for an e-mail to tell you that you have to pay the invoice for 1st month's hosting. Then wait for another e-mail to tell you to configure pools etc. The whole process took nearly a week, so I lost about 4-5 days compared to if I shipped the miners to my own colo.

User interface is clunky, you can't even see which pool is dead/alive, accept/rejects, nothing. I was kind of expecting they would give access to the actual miner's web interface, but that's not the case. I was using their own AntPool and then it stopped working, switched to backup pool and I still don't know why. My miners work at 80-90% rated speed, but that might be an S4-specific issue.

In other words, quite crappy. And pricing is not that great either, 0.13 USD per kW/h at the moment.

Thank you for the update on the place. That power expense is really terrible. I would certainly be better off here at 0.10 USD for energy. I guess these types of situations are good for non-technical people that want to mine, but like you, I like direct access to the miners to make changes as I see fit. Do you have to keep them there for a certain period of time or is it just a month-2-month contract situation?

There is no minimum, it's month-to-month. I believe I can stop paying any time and ask for it to be shipped to me, although I'm not sure yet what the shipping cost would be - sent an e-mail last week, waiting for response. I have access to 0.08-0.10 USD power, but unfortunately I'm out of capacity, so I thought this would be a good option - even though it's a bit more expensive per kW/h, but I saved 120+ USD per unit on shipping. If they can sort out the performance issue for the S4 it could be bearable. Power costs will go down slightly:

Oct. 1st,2014-
Dec. 31st,2014
$0.13/KWh

Jan. 1st,2015-
Mar. 31st,2015   
$0.12/KWh

Apr. 1st,2015-
Jun. 30th,2015
$0.11/KWh

It's funny though that the hosting invoice for the S4 seems to have calculated ~1450W per unit, even though the specs say 1400W. Looks like they don't trust their own specs

Certainly expected better integration and better support considering all this is supposed to be handled by the same company.

[hurricandave]

^^^ That's probably 50W's of resistance from the 1200foot of spaghetti wire between the panel meter and where your miner is actually racked.

[philipma1957]

I got 2 new antminers today and they have the latest firm ware. this inlcudes under clock freq and under volt numbers . has any one been able to get the undervolts numbers to work.  I keep dropping the undervolt and don't seem to use less watts.

[chinesebob]

One of mine is acting up (an S3) and I've set it to reboot every 2 hours:

* 0,2,4,6,8,10,12,14,16,18,20,22  *   *   *     /sbin/shutdown -reboot

Might be simpler as:

0 */2 * * * /sbin/shutdown -reboot

Thanks for the suggestion. Implemented. I freely admit to knowing just enough about crontab to be dangerous.

If you implemented this verbatim you might want to confirm that your Antminer actually has an "/sbin/shtudown" command, I know mine don't, only poweroff and reboot

[1Neptune]

One of mine is acting up (an S3) and I've set it to reboot every 2 hours:

* 0,2,4,6,8,10,12,14,16,18,20,22  *   *   *     /sbin/shutdown -reboot

Might be simpler as:

0 */2 * * * /sbin/shutdown -reboot

Thanks for the suggestion. Implemented. I freely admit to knowing just enough about crontab to be dangerous.

If you implemented this verbatim you might want to confirm that your Antminer actually has an "/sbin/shtudown" command, I know mine don't, only poweroff and reboot

I've had an ssh session open to the S3 for not quite 24 hours now which tells me it's not actually rebooting, but for some unknown and I don't care reason it appears to have solved the problem and the S3 has continued to hash uninterrupted.

[faetos]

One of mine is acting up (an S3) and I've set it to reboot every 2 hours:

* 0,2,4,6,8,10,12,14,16,18,20,22  *   *   *     /sbin/shutdown -reboot

Might be simpler as:

0 */2 * * * /sbin/shutdown -reboot

Thanks for the suggestion. Implemented. I freely admit to knowing just enough about crontab to be dangerous.

If you implemented this verbatim you might want to confirm that your Antminer actually has an "/sbin/shtudown" command, I know mine don't, only poweroff and reboot

I've had an ssh session open to the S3 for not quite 24 hours now which tells me it's not actually rebooting, but for some unknown and I don't care reason it appears to have solved the problem and the S3 has continued to hash uninterrupted.

Magic fixes all IT issues at some point. shutdown isn't on S3+ machines.

This should be in your crontab entry:

Code:

0 */2 * * * /sbin/reboot

That is, of course, if the magic stops working and you actually want a command to execute.

[philipma1957]

I got 2 new antminers today and they have the latest firm ware. this inlcudes under clock freq and under volt numbers . has any one been able to get the undervolts numbers to work.  I keep dropping the undervolt and don't seem to use less watts.

Hate to quote myself but has anyone got a different result with lower volts

I tried 10 different settings and everyone gave me the same power results about 337 watt

I finally went as low as 0599 and the miner did not work it had wacky numbers.  current setting is 0638.  so what am I doing  wrong

note this it the newest model direct from china it arrived on monday the 24th

[pokeyjones]

I got 2 new antminers today and they have the latest firm ware. this inlcudes under clock freq and under volt numbers . has any one been able to get the undervolts numbers to work.  I keep dropping the undervolt and don't seem to use less watts.

Hate to quote myself but has anyone got a different result with lower volts

I tried 10 different settings and everyone gave me the same power results about 337 watt

I finally went as low as 0599 and the miner did not work it had wacky numbers.  current setting is 0638.  so what am I doing  wrong

note this it the newest model direct from china it arrived on monday the 24th

What is/are the optimal PSU's in the Corsair family to run S3+?

Multiples of 500, 600, 750, and 850
Given your choice, how would you setup 4 miners with any layout of above psu's?

thanks!!

[suchmoon]

What is/are the optimal PSU's in the Corsair family to run S3+?

Multiples of 500, 600, 750, and 850
Given your choice, how would you setup 4 miners with any layout of above psu's?

thanks!!

I run a bunch of HX 850 PSUs with 2 S3s each, so in your case I would suggest two 850s for 4 miners.

750 is a bit too weak for 2 miners, so the only other viable option would be two 600s for 3 miners and then a 500 for the fourth one, but why use three PSUs total when you can do with two.

[aarons6]

What is/are the optimal PSU's in the Corsair family to run S3+?

Multiples of 500, 600, 750, and 850
Given your choice, how would you setup 4 miners with any layout of above psu's?

thanks!!

I run a bunch of HX 850 PSUs with 2 S3s each, so in your case I would suggest two 850s for 4 miners.

750 is a bit too weak for 2 miners, so the only other viable option would be two 600s for 3 miners and then a 500 for the fourth one, but why use three PSUs total when you can do with two.

because the closer you reach the max the psu can put out the less efficient it is. its best to keep them around 60%.

[suchmoon]

What is/are the optimal PSU's in the Corsair family to run S3+?

Multiples of 500, 600, 750, and 850
Given your choice, how would you setup 4 miners with any layout of above psu's?

thanks!!

I run a bunch of HX 850 PSUs with 2 S3s each, so in your case I would suggest two 850s for 4 miners.

750 is a bit too weak for 2 miners, so the only other viable option would be two 600s for 3 miners and then a 500 for the fourth one, but why use three PSUs total when you can do with two.

because the closer you reach the max the psu can put out the less efficient it is. its best to keep them around 60%.

True, but it's negligible for any decent PSU and wouldn't cover the expense of more PSUs needed to run at lower utilization.

For HX850 the difference between 50% load (max efficiency) and 90% load is 1% at 230V or 2% at 115V.

[hurricandave]

Maybe you should consider something like a SuperMicro PWS-865-PQ, they are 80+ Bronze and have 4 6-pin PCI-E leads from a single rail. Average retail around $145 each.