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Article ID: 9 - Last Modified: August 18, 2014

When running parallel Jaguar or QSite calculations the following message is in the log file for the job. Is this a problem?

[[6789,1],1]: A high-performance Open MPI point-to-point messaging module was unable to find any relevant network interfaces:
Module: OpenFabrics (openib)
Host: hlwus019
Another transport will be used instead, although this may result in lower performance.

This is a warning concerning the operation of Open MPI, the MPI package that is included with Jaguar and QSite for parallel calculations. It does not suggest that there is a problem with the calculation itself.

You can suppress this message by setting the SCHRODINGER_MPI_FLAGS environment variable in your system-wide startup file.

For example, in .bashrc:
SCHRODINGER_MPI_FLAGS="--mca btl tcp,self"

In .cshrc:
setenv SCHRODINGER_MPI_FLAGS "SCHRODINGER_MPI_FLAGS="--mca btl tcp,self"

After doing this, open a new shell and re-submit the calculations.

Keywords: openmpi

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