ethminer-free no longer works with rocm

[Atemu]

Describe the bug

A clear and concise description of what the bug is.

Caused by #150767

Not sure whether this is an upstream issue or ours.

Steps To Reproduce

Steps to reproduce the behavior:

1. nix-shell -p ethminer-free --command 'ethminer --list-devices'

Notify maintainers

@Flakebi

[Flakebi]

Hi, I’m not sure what the output should look like, but it seems to work fine for me (using the unstable channel, which should include the rocm update now).

# configuration.nix
hardware.opengl.extraPackages = with pkgs; [
  rocm-opencl-icd
  rocm-opencl-runtime
];

$ nix-shell -p ethminer-free --command 'ethminer --list-devices'


ethminer 0.19.0
Build: linux/release/gnu

 Id Pci Id    Type Name                          CL    Total Memory  Cl Max Alloc  Cl Max W.Grp
--- --------- ---- ----------------------------- ----  ------------  ------------  ------------
  0 0e:00.0   Gpu  gfx1010:xnack-                Yes        7.98 GB       7.98 GB      256.00 B

[Atemu]

That's the exact same setup I have, weird. Are you sure you've got the rocm update? I build directly from git and reverting your PR fixed the issue.

[Flakebi]

Weird. I checked again, but I got the update:

$ ll /run/opengl-driver
lrwxrwxrwx 69 root root  1 Jan  1970 etc -> /nix/store/y15n95blhmlyrv8gp7z2jbhvwkwn9naw-rocm-opencl-icd-4.5.2/etc
lrwxrwxrwx 77 root root  1 Jan  1970 include -> /nix/store/d9j5dcd0q0j77wvkgpwyszf1y1z6bb13-rocm-opencl-runtime-4.5.2/include
dr-xr-xr-x  - root root  1 Jan  1970 lib
dr-xr-xr-x  - root root  1 Jan  1970 share

I also tried

$ nix-build -A rocm-opencl-icd  # In a nixpkgs checkout
/nix/store/y15n95blhmlyrv8gp7z2jbhvwkwn9naw-rocm-opencl-icd-4.5.2
$ export OCL_ICD_VENDORS="$(pwd)/result/etc/OpenCL/vendors/"
$ nix run '.#ethminer-free' -- --list-devices


ethminer 0.19.0
Build: linux/release/gnu

 Id Pci Id    Type Name                          CL    Total Memory  Cl Max Alloc  Cl Max W.Grp
--- --------- ---- ----------------------------- ----  ------------  ------------  ------------
  0 0e:00.0   Gpu  gfx1010:xnack-                Yes        7.98 GB       7.98 GB      256.00 B

[Flakebi]

I tried on another machine with an older GPU (RX 480) and there it fails after the update:

# Before the update
$ nix run nixpkgs#ethminer-free -- --list-devices


ethminer 0.19.0
Build: linux/release/gnu

 Id Pci Id    Type Name                          CL    Total Memory  Cl Max Alloc  Cl Max W.Grp
--- --------- ---- ----------------------------- ----  ------------  ------------  ------------
  0 03:00.0   Gpu  gfx803                        Yes        8.00 GB       8.00 GB      256.00 B


# After the update
$ nix run nixpkgs#ethminer-free -- --list-devices


ethminer 0.19.0
Build: linux/release/gnu

Error: No usable mining devices found

Looks like Polaris (gfx8) support was dropped borked in ROCm 4.5: https://www.reddit.com/r/hardware/comments/qr5q6z/rocm_45_drops_support_for_amd_polaris_gpus/
Edit: Apparently a bug, so it may be enabled again in a further update? ROCm/ROCm#1608

[Atemu]

This is an upstream issue.