Welp, after doing some even further digging, Ive confirmed there are 8 cores being disabled upon startup by bfgminer. The resultant hashrate loss is nearly identical to what Im seeing in cgminer.
Some further things noticed & tested:
1. Ive confirmed that at least 1 of those disabled cores is able to do good work, by enabling it in bfgminer & watching it have a share accepted.
2. I couldnt believe it at first, thought I was going crazy, but the 8 cores that are being identical are 4 per hab, the id of the cores being EXACT between the 2 habs... WTF?!
0dr,0hj,0lb,0ot & 1dr,1hj,1lb,1ot - as seen in bfgminer
3. I went and hit the reset button on the board and noticed bfgminer re-detect the boards, each time a different core count was detected, ranging from min of 760 to a max of 766!(only 2 disabled)
4. I manually turned on those disabled cores in bfgminer, seeing my hashrate climb to what it should be, at least measured locally.
5. The state in which those 8 cores are upon bfgminer start is "RST"
Any ideas as to what could be going on?! =/
This is confusing the hell outta me....
are you running cgminer with --hfa-noshed ? HF chips can report to have babbling cores that just seem to do random stuff at times, its not clear and we where told it was fixed in .5 of the firmware but well take it with a grain of salt with that statement.
Yeah, seems to have no effect =/ ... Whats odd is w/ noshed, the inflight count was 760, w/o noshed, at least this time, the inflight shows 768 =P ROFL! ... complete opposite of what it should be like, but I may verify those results.
If only bfgminer supported setting fan speeds, Id be using it instead of cgminer for the habs, seems to have much more accurate hashrate readout & consistency ... not to mention poolside hashrate measurement is always nice to see, which cgminer doesnt show at all.
Also, I dont know which miner to believe, because bfgminer shows upwards of 4% HW error on one of the habs, cuz its clocked a bit too high, whereas cgminer shows only 1.2% ... so which to believe, not sure, but the loss in hashrate would be consistent w/ the 4% HW ... but dropping clocks, even tho lowers HW%, doesnt affect the drop in hashrate. Its just allout confusing ... LOL