On Thu, 10 Jan 2019 11:20:12 +0000
ROTHE Eduardo - externe <eduardo-externe.ro...@edf.fr> wrote:

> Hi Gilles, thank you so much for your support!
> For now I'm just testing the software, so it's running on a single
> node.
> Your suggestion was very precise. In fact, choosing the ob1 component
> leads to a successfull execution! The tcp component had no effect.
> mpirun --mca pml ob1 —mca btl tcp,self -np 2 ./a.out > Success
> mpirun --mca pml ob1 -np 2 ./a.out > Success
> But... our cluster is equiped with Intel OMNI Path interconnects and
> we are aiming to use psm2 through ofi component in order to take full
> advantage of this technology.

Ofi support in openmpi has been something to stay away from in my
experience. You should just use the psm2 mtl instead.

/Peter K
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