Hi Gilles, all,
Using `OMPI_MCA_ess_singleton_isolated=true ./program` achieves the desired
result of establishing no TCP connections for a singleton execution.
Thank you for the suggestion!
Best regards,
-Dan
On Wed, Apr 17, 2019 at 5:35 PM Gilles Gouaillardet
wrote:
> Daniel,
>
>
> If your
Daniel,
If your MPI singleton will never MPI_Comm_spawn(), then you can use the
isolated mode like this
OMPI_MCA_ess_singleton_isolated=true ./program
You can also save some ports by blacklisting the btl/tcp component
OMPI_MCA_ess_singleton_isolated=true OMPI_MCA_pml=ob1
OMPI_MCA_btl=vad
