[mpich-discuss] Verify infiniband communication

Min Si msi at anl.gov
Wed Jan 24 03:14:05 CST 2018


You can run /opt/mpich-install/examples/cpi to test the basic 
functionality of MPICH/mxm.
For example:
mpiexec -np 2 -ppn 1 -f <hostfile> ./cpi

For more testing options, you can find information at 


On 2018/01/23 19:09, Chandler wrote:
> Hi all,
> I configured and installed mpich-3.2.1 on our cluster with Mellanox 
> infiniband adapters.  I used this command:
> ./configure --prefix=/opt/mpich-install --with-device=ch3:nemesis:mxm 
> --with-mxm=/opt/hpcx-v2.0.0-gcc-inbox-redhat6.9-x86_64/mxm
> which worked fine without errors, then "make install".  Now would like 
> to verify that MPICH will use our infiniband network by default (the 
> cluster also has 1Gbps ethernet network).  Can you let me know some 
> test commands to run to verify the infiniband devices are used?
> Thanks,

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