Post
Topic
Board Mining support
Re: BITMAIN Antminer S3 support and OverClocking thread
by
christhegoth
on 21/08/2014, 13:27:14 UTC
Multipool Mining:

I got this from Bitmain.


--Balance: In balanced mode, the amount of diff1 solutions per pool is monitored as a rolling average per 10 minutes and if pools start getting more, it biases away from them to distribute work evenly. The share count is reset to the rolling average every 10 minutes to not send all work to one pool after it has been disabled/out for an extended period.

--Load Balance: Change multipool strategy from failover to even load balance.

--Failover only: Don't leak work to backup pools when primary pool is lagging.


When I use Load Balance I have 3 pool slots used.  2 are the same pool, and one is for a different pool.

I get about 80-gig on the single-slot pool, and the rest ( 360 gig ) on the double-slot pool.

I have it set to:

Load Balance, with...

Slot 1 - EclipseMC
Slot 2 - Eligius
Slot 3 - EclipseMC

Eclipse gets the 360 gig.


It does not like pools that update their hashrates quickly.  So you have to ignore the 5s and 15min figure.  It's the 1 hour figure you have to look at.

And it hates GHash when mining 2 pools ( or more ) at once.  It really messes up the stats.   Loads of low difficulty stuff, and it tricks GHash into thinking it's mining at 1TH or more.  A real mess.


Apart from that it's fine.



Clock-wise I use 2 cheap-ass supplies in a case mod ( because of the 12v rail issues ).  Each supply can put 26A minimum down the 12v.  I use 440w at the wall ( as they are cheap, so easy to replace if they blow; and there are 2 of them ) to get 440 GH/s.

If I dial back the clock to 200m I get 1.05 GH/w at an average of 400 GH/s.

If I dial the clock back to 175m I get 1.17 GH/w at an average of 340 GH/s.


Which is the same as if I dial down my Bitmine.ch Coincraft Desk.  Certainly interesting stuff, and it means that as difficulty rises you can adjust the power factor and squeeze a few more months out of your miners before you need to upgrade.

Power to hash ratio is adjustable, and that is certainly good news in this climate ( what the hell happened to BTC price of late?  Is this the Silk Road sale knock-on effect happening? )