AMD MI210 only got 20% performance of Nvidia A100 of MultiRHSProf - 8rhs

[Alice1069]

I test latest code on MI210, I got 0.36TOPS,
if i removed #program unroll，I got 0.88TOPS.
compares to nvidia-A100 4.3 Tops, it's only 20%.
considering A100 and Mi210 has similar fp32 ops capability, is it reasonable or still have space to improve mi210 performance?

configs:
Lattice = 64 64 64 20
SIMULATeQCD code: main branch, git commit 2022 Aug 2, 551ccca
-DARCHITECTURE="gfx90a" //for mi210
mpiexec -np 1 --allow-run-as-root ./MultiRHSProf (8rhs)

[clarkedavida]

Hi Alice, thanks for looking into this, and sorry about the extremely late response.

We have been noticing poor performance on MI250X compared to A100. We are not yet sure what is causing this... We will let you know if we figure out what is causing our performance loss.