@ -ck
I'm just wondering what metrics are used to calculate the pool's difficulty level set for a given worker, is it purely down to the number of shares returned in a given time?
Also, how is the difficulty set by a miner? Most of my rigs run CGMiner which has a suggested difficulty parameter '--suggested-diff xxx' that allow me to set the difficulty I want.
However, I've recently added a BitAxe Gamma and there appears to be no method for requesting a particular difficulty so it falls back to whatever the pool decides, is there an additional parameter that can be set for example in the password field like -d = 10000?
Thanks
G.
Cgminer was the only mining software that implemented the stratum command for suggesting diff. Bitaxe and others use different mining software these days, without any support for suggesting diff. The pool chooses based on submission rate to maintain 18 shares per minute. Suggesting diff is by and large a waste of time since the pool will find the optimal value for your mining hardware over enough time, unless you want to set it higher than strictly needed (there's no logical reason for this apart from a very tiny drop in internet bandwidth.) The pool will ignore you setting too low a diff as this potentially acts as a DoS on the pool.
Hi -ck
OK thanks for the explanation. I have most of my rigs set with a higher value than the pool requested but not massively different for my fastest rig the pool was requesting something quite low ~3000-4000 for 6TH/s I increased this to 12000 and I found by doing that the average returned share values were higher and as you pointed out it reduced network usage marginally, though insignificant in reality.
It all runs fine, so no issues.
I just wanted to do the same with the BitAxe since it seemed to be hammering the network more than I was expecting, the pool has settled on a diff of 911 for 1.1-1.2TH/s from the BitAxe I think it could do with being a bit higher probably twice that so 1500-1800. Hence my earlier question.
Anyway, its not really a problem just more an observation than anything.
Thanks for your help
G.