can someone explain the "coreOK" stat better for me? I sometimes see chips with this as 0 or <10, and other times they are all in the hundreds.
When i start the miner, all chips report 756. within 5 minutes they are all under 700
Each chip has 756 cores. The software tracks which cores have found good nonces. You can see the full details in /tmp/.core.log
The numbers you're looking at are actually how many cores have *not* yet found a good nonce. Over time, if all cores are good, that number will approach 0.
oh terrific, thanks. I was getting concerned to see some chips hitting '0' for this, and letting the crazy in my head associate it with temporary hashrate drops at the pool or chips switching off to 0 noncerates.
-> The chips turning off was fixed by a few more voltage tweaks - 0.825V across the caps seems to be the best, with tuning at 54 on 15 chips, and chip 1 at 53, I have a stable 38-42GH/s hourly rate (24hr average of ~39.85 GH/s).
At 0.840V i was getting about 41.5GH/s, but a chip turning off now and then bringing me down to 39GH. Not sure if this was a temp or voltage issue, but ive got some bigger 35x35x6mm heatsinks coming that i plan to strap 4 of on each board
