AMDGPU-PRO 18.50 vs. ROCm 2.0 OpenCL Performance

[Etherman]

This thread describes the reasoning.

https://developer.blender.org/D2171

[utrrrongeeb]

Probably referring to

CYCLES_OPENCL_SPLIT_KERNEL_TEST=1

, via https://blender.stackexchange.com/a/7486

[Michael]

There's an env variable for enabling support for unsupported opencl implementations for
Blenders cycles renderer.
Maybe that is needed for rocm.

Happen to have any documentation on that env var?

[Etherman]

Had tried but currently was falling back to CPU rendering for some reason, didn't have time to explore to see if it was bug in ROCm or a Blender issue.

There's an env variable for enabling support for unsupported opencl implementations for
Blenders cycles renderer.
Maybe that is needed for rocm.

[bridgman]

Is there a guide how to get ROCm working with mainline kernel without installing whole amdgpu-pro graphics stack? Some people claim it's possible, but I didn't manage to get it working. I tried installing pre-built binaries as https://rocm.github.io/ROCmInstall.html suggests, but it didn't work for me. Also, those binaries come unsigned for some reason...

You need 4.18 or newer upstream kernel; 4.19 if you have a Vega. Also need ROCm 1.9 or newer.

What hardware do you have ?

[Marc Driftmeyer]

Since AMD wrote the vast majority of the OpenCL stack in Blender one would think their ``tests'' at conferences would work with ROCm, but my guess is this HSA designed stack for HPC has no future on Blender.

If you'll notice Blender is only testing Pro Renderer on the new Vega VII test slides, not Cycles, never mind Evee.

[Michael]

Michael, could you please add the Blender tests to this run? That's the only actual use I have for ROCm, and the reason I waited patiently and longingly for it.

Had tried but currently was falling back to CPU rendering for some reason, didn't have time to explore to see if it was bug in ROCm or a Blender issue.

[Azpegath]

Michael, could you please add the Blender tests to this run? That's the only actual use I have for ROCm, and the reason I waited patiently and longingly for it.

[cb88]

Is there a guide how to get ROCm working with mainline kernel without installing whole amdgpu-pro graphics stack? Some people claim it's possible, but I didn't manage to get it working. I tried installing pre-built binaries as https://rocm.github.io/ROCmInstall.html suggests, but it didn't work for me. Also, those binaries come unsigned for some reason...

This is the wrong place to ask... Also ROCm has nothing to do with amdgpu-pro they are separate things. The easiest route is probably thier recommended rock-dkms if on Debian.

If you want to get ROCm working with an upstream kernel... then you'll just have to try several ones to see which one works probably 4.18 and 4.19 would be a good place to start. Note there are caveats to using an upstream kernel.

[khnazile]

Is there a guide how to get ROCm working with mainline kernel without installing whole amdgpu-pro graphics stack? Some people claim it's possible, but I didn't manage to get it working. I tried installing pre-built binaries as https://rocm.github.io/ROCmInstall.html suggests, but it didn't work for me. Also, those binaries come unsigned for some reason...