Using hwloc 2.0.3 in openmpi

Using hwloc 2.0.3 in openmpi

[Ricardo Wurmus]

Hi Guix,

currently, the openmpi package is built with hwloc 1.11.12, which
includes this note:

  ;; Note: For now we keep 1.x as the default because many packages have yet
  ;; to migrate to 2.0.

OpenMPI does work with hwloc 2.0, though, and I’ve built it successfully
after replacing “hwloc” with “hwloc-2.0”.

What do other HPC users think about making this change?

--
Ricardo

Re: Using hwloc 2.0.3 in openmpi

[Ludovic Courtès]

Hi Ricardo,

Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de> skribis:

> currently, the openmpi package is built with hwloc 1.11.12, which
> includes this note:
>
>   ;; Note: For now we keep 1.x as the default because many packages have yet
>   ;; to migrate to 2.0.
>
> OpenMPI does work with hwloc 2.0, though, and I’ve built it successfully
> after replacing “hwloc” with “hwloc-2.0”.
>
> What do other HPC users think about making this change?

Perhaps this comment no longer holds and we can indeed upgrade.

Did you try recompiling all the dependents with this change?  ISTR SLURM
wouldn’t build with hwloc 2.0.  But if it works now, I’d say you can go
ahead.

Thanks,
Ludo’.