@doktor83 kudos for being one the first devs to add experimental support for big navi.
No luck on cn_gpu for 6900xt, gpu is hashing but not getting any accepted shares on pool. Thoughts?
Can mine cn_xhv with accepted shares, strange behavior, hashrate will oscillate b/t 2100-2600 until settling around 2400.
Tried varying intensities, gpu seemed to prefer using dual threads, but similar results with respect to oscillating for first minute or two after startup.
Yes i have actually, now that you mentioned cn_gpu, because i just remembered i didnt compile it the way i should have
Going to be fixed in next release.
I dont have a 6900xt so i couldn't test, but looking at the specs i think you could try running 3 or maybe even 4 threads.
--gpu-intensity 896+896+896
For settling the oscilations you could try the new-old thread delay parameter i added,
--gpu-extra-config (check details in Help\Gpu_Tweaking_And_Boost.txt)
Can you test it on ETHASH, im curious about the results ?