[mpich-discuss] MPI over infiniband

Zhou, Hui zhouh at anl.gov
Wed Jul 1 08:27:33 CDT 2020

Hi Sabu,

Could you try configure MPICH with `--with-device=ch4:ucx`?

Hui Zhou

From: Sabu Best via discuss <discuss at mpich.org>
Reply-To: "discuss at mpich.org" <discuss at mpich.org>
Date: Wednesday, July 1, 2020 at 6:12 AM
To: "discuss at mpich.org" <discuss at mpich.org>
Cc: Sabu Best <Sabu.Best at barbados.gov.bb>
Subject: [mpich-discuss] MPI over infiniband

Good day to all,

   Question, we have been trying to use MPICH over infiniband fabric, but we can't seem to get it to work unless it is IPoIB. We have seen options in OpenMPI that automatically selects Infiniband as the first choice path, but I don't see anything similar for MPICH.

Looking forward to your input on this.


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