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Subject: [OMPI users] IMB-OpenMPI on Centos 6
From: Venkateswara Rao Dokku (dvrao.584_at_[hidden])
Date: 2012-02-27 02:10:00


We are facing a problem while running the IMB [Intel MPI Benchmark] tests
on Centos 6.0.
All the tests [PingPong, Exchange.. etc] stalls after some time with no

Our's is a customized OFED stack[Our own Driver specific library and Kernel
drivers for the h/w], we use IMB tests for testing the same.
We have already tested the same stack on RHEL5.4 and it was fine.

Tests sends few packets and it is observed that acknowledgement for all
those packets are received. But no more Send Work Queue entries added for
the driver to process.
Test does not return at all, just stalls there after sending few packets.
Observed only in Centos 6/RHEL 6.

Versions of packages installed :
OpenMPI - 1.4.3
LibIbVerbs - 1.1.4
LibIbUmad - 1.3.6
IMB - 3.2.2

Please confirm if the versions are compatible with RHEL6. If not, Please
suggest the appropriate packages.

Please respond ASAP. Any help will be appreciated.

Thanks & Regards,
D.Venkateswara Rao,
Software Engineer,One Convergence Devices Pvt Ltd.,
Jubille Hills,Hyderabad.