heliosgnosis
commented
3 years ago EDIT -mt only works on certain as in newer versions with the most up to date drivers on linux and the card only need be GDDR5 as the documentation states by the way. Works on GTX 1650's 1060's etc, GDDR5x is not needed for it to boost the heck out of the Vram I/O speed which btw is really cool that is barely increases the thermals giving boost when so used on said cards with GDDR5 or GDDR5X Vram. But all of your cards support it my friend 1070 has GDDR5, works on mine all of them 28 MH on Kawpow "and that is at pool and is actual, 26-30 MH" even though miner only says 15.52 MH/s the actual is twice that. When I do not use it I get half the shares and revenue. I have tested it on each and every GDDR5 and GDDR5X card to cross my way and she works on them all and on all algos that benefit from faster I/O speed's of the Vram, ETChash, ETHash, Kawpow, Autolykos and V2variant, etc etc etc.. That said since fall of last year tons of fake and really damn good fake cards have leaked into the markets, and they have been around for WAYYYYYYY longer than just fall 2020 late 2019 but not into all markets yet globally btw. I am willing to bet that is the actual problem or you just need to config as you have done above given you are pumping up the entire mining board and not just some desktop or workstation with 2 gpu's in her.
I have some 1080ti and 1070 which benefit from memory tweak. I use hiveos and try to keep as uniform flightseets (config templates) as possible. So I will try to enable memory tweak always on all cards and let nbminer figure out which ones does not support it as nbminer detect itself if card is not memory-tweak compatible (not gddr5, gddr5x).
But it will not work if it is put on as single global, if first (or all?) graphics cards does not support it: -mt 6 this will not activate any memory tweaks on any cards (even if there are some cards in the system that support it)
current workaround is to add as many cards i would think in one rig could possible maximally be: -mt 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6 ... etc.
this will notify correctly in console that this and that card does not support memory tweak and this and that does. it will activate it on appropriate cards as expected.