Susan --
Try setting
--mca btl_base_warn_component_unused 0
That should make the warning go away (shame on us for not putting that in the
warning message itself -- doh!).
If that works for you, you can put "btl_base_warn_component_used = 0" in
$prefix/etc/openmpi-mca-params.conf (i.e., your side-wide configuration).
> On Feb 9, 2017, at 3:30 PM, Susan A. Schwarz <susan.a.schw...@dartmouth.edu>
> wrote:
>
> I am using OpenMPI 1.10.1 built with Intel compilers 16.0.3 on Centos 6.7.
> Our cluster has some cells where the nodes have infiniband and some cell with
> 10GB IP. I am hoping that I can build just one version of OpenMPI that can
> run on both infiniband and IP cells and not get any network-related warnings.
> I configured and built OpenMPI on a node with infiniband as follows:
>
> ./configure CXX=icpc CC=icc FC=ifort --prefix=/opt/openmpi/1.10.1-intel16.0 \
> --enable-mpirun-prefix-by-default --with-threads --enable-mpi-thread-multiple
> \
> --with-tm=/opt/torque/active --with-verbs=/usr --with-verbs-libdir=/usr/lib64
>
> We are using OFED 3.2 that is part of the Centos distribution. When I run a
> program built with this version of OpenMPI and configured as described above
> on a cell with infiniband, the program runs without any warnings or errors.
> However, when I run on an IP-based cell, I get the following warning:
>
> ----------------------------------------------------------
> A high-performance Open MPI point-to-point messaging module
> was unable to find any relevant network interfaces:
> Module: OpenFabrics (openib)
> Host: k07
>
> Another transport will be used instead, although this may result in
> lower performance.
> —————————————————————————————————————————
> The program runs correctly but I am wondering if there is a way to get rid of
> the warning. I am aware of the MCA btl arguments that can be used with
> mpirun to specify ib or ip but I was hoping I didn’t have to burden my users
> with those details. Is there a way to configure OpenMPI to run on either IB
> or IP without warnings.
>
> Thank you,
> Susan
>
> Susan Schwarz
> Research Software Engineer
> Research Computing
> Dartmouth College
> Hanover, NH 03755
>
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--
Jeff Squyres
jsquy...@cisco.com
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