`hwloc_set_membind 0x00000001 (policy 2 flags 0x0) failed` on simple `hwloc-bind --membind package:0 -- ls`

[antoine-morvan]

Hello,

I was playing a bit with hwloc 2.11.2 on my personal desktop, under WSL, runing some benchs with scripts defaulting to hwloc-bind --membind package:0 --$EXE

This is producing the following error :

$ hwloc-bind --membind package:0  -- ls
hwloc_set_membind 0x00000001 (policy 2 flags 0x0) failed (errno 38 Function not implemented)

I don't get this on any of the "real" HPC systems. I could only reproduce on my Windows 11 WSL Ubuntu 22.04 so far.

Best.

[bgoglin]

Hello. What do you mean with "real HPC systems" ? Windows or Linux ? hwloc-bind doesn't work on Windows outside of WSL iirc, and I don't know if membind syscalls are implemented in WSL.

[antoine-morvan]

I mean native linux setups. I would understand if membind is not supported under WSL. I think I remember having this work while ago, but I am not sure now.