On Tue, 10 Oct 2017 11:57:51 -0400
Michael Di Domenico <mdidomeni...@gmail.com> wrote:

> i'm getting stuck trying to run some fairly large IMB-MPI alltoall
> tests under openmpi 2.0.2 on rhel 7.4

What is the IB stack used, just RHEL inbox?

Do you run openmpi on the psm mtl for qlogic and openib btl for
mellanox or something different?

> i have two different clusters, one running mellanox fdr10 and one
> running qlogic qdr
> 
> if i issue
> 
> mpirun -n 1024 ./IMB-MPI1 -npmin 1024 -iter 1 -mem 2.001 alltoallv

Does it work if you run with something that more obviously fits in RAM?
Like "-mem 0.2"

/Peter K
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