I have a question about the stratum difficulty. I have two Antminer S3s, and I'm using the GHash.IO mining pool. Their
FAQ says:
The optimal settings of the stratum difficulty depends on your hash-rate:
16+ GH/s - 16 difficulty
32+ Gh/s - 32 difficulty
64+ GH/s - 64 difficulty
128+ GH/s - 128 difficulty
256+ GH/s - 256 difficulty
512+ GH/s - 512 difficulty
1 TH/s - 1024 difficulty
So based on that, the setting would be 256 for each miner. Does anyone actually alter this setting in their mining pool? Or do you just keep the default setting?
thank you.
I don't think it's for each miner (
unless you have them as different workers). If they're set as one worker, then set it to 512 (or 1TH if you can get it stable over 1000 GH/s). If they're separate workers then yea, 256 should be fine.
But Yes it works in every pool I've tried (4 or 5 different pools)
They are set up with different worker IDs. I thought that was required. I didn't know I could have two miners in the same pool with the same worker ID. Does that work? Is there an advantage to doing that?
No... It's hard to see/track your individual S3's performance...
I'm using separate workers for each of mine S3's ...256 diff...
ZiG
But Yes it works in every pool I've tried (4 or 5 different pools)
Stratum difficulty can be "forced" on some pools (Ghash for instance) on others it typically is calculated and/or set by the pool (Eligius).
This is normally set on an even bit boundry (16, 32, 64, 128, etc. . . .)
We are currently hashing on a pool that calculates, over time, a precise difficulty for each worker that does not necessarily fall on an even bit boundry.
We are seeing Stratum difficulty raging from 281.07 to 454.57 on our 12 S1's and 796.60 to 1084.24 on our 12 S3's.
We see, when implementing a new miner, this pool defaults to 512 and adjusts that value over time.
I think I'm seeing less stale, Dup, and low difficulty rejects as a result.
But am reticent to make a definitive statement as too the observation.
Does this makes sense, Oh Great and Knowledgeable Stratum Guru's?
