Linux much lower hashing rate than windows

[Victoram]

Hello, i was giving a try on xmr-stak-amd with some nice settings, putting 2 threads with intensities like 1024/960 on a rx570 yields me 800 H/s easily, with above 900 when overclocking

but when i compiled the linux binaries, with the latest amdgpu-pro, and with the most new gcc and cmake, i have 70 H/s (~ -10%) less than windows, which suck, because windows is a much less stable system(also it does not support 12+ gpus), both tests were made in the same computer with the same hardware.

any tips to increase mining speed? I enabled huge pages on the amd driver too, but no change... ubuntu 16.04.3 LTS, with newest kernel (4.10-something)

[jmccoy555]

Hi, not helping your issue but could you confirm your config is something like;

"gpu_thread_num" : 2,

"gpu_threads_conf" : [ { "index" : 0, "intensity" : 960, "worksize" : 8, "affine_to_cpu" : false}, { "index" : 0, "intensity" : 1024, "worksize" : 8, "affine_to_cpu" : false},

],

I'm curious to try the 2 thread per GPU set up as I can't push my RX580s above 680H/s.

Thanks.

@Victoram

Thanks, using

intensity 512 and worksize 4 gets me an extra 220h/s on my 6 cards. Not great, but will keep trying and then may give Ubuntu a try to see if it gets any better / worst....... (keeping it relevant!!)

Apparently the latest win driver now supports 12gpus.

[Victoram]

yep, I use 900/1000, 938/1024, you will get nice results

[psychocrypt]

We released a new version of the miner: https://github.com/fireice-uk/xmr-stak Please check if the issue still exists with the new version. If the problem is not fixed so far please open a new issue in the issue section of the new reposetory