Hi Nathan,

You gave me a hit, thanks!

I applied your patches and added "-mca btl_openib_flags 311" to the mpirun
option, then it worked for me.

[mishima@manage OMB-3.1.1-openmpi2.0.0]$ mpirun -np 2 -mca btl_openib_flags
311 -bind-to core -report-bindings osu_bw
[manage.cluster:21733] MCW rank 0 bound to socket 0[core 0[hwt 0]]:
[B/././././.][./././././.]
[manage.cluster:21733] MCW rank 1 bound to socket 0[core 1[hwt 0]]:
[./B/./././.][./././././.]
# OSU MPI Bandwidth Test v3.1.1
# Size        Bandwidth (MB/s)
1                         1.65
2                         3.49
4                         7.04
8                        14.46
16                       28.36
32                       56.22
64                       99.51
128                     164.30
256                     279.30
512                     497.09
1024                    884.19
2048                   1409.68
4096                   1774.12
8192                   2517.35
16384                  3445.86
32768                  3993.43
65536                  3952.04
131072                 3960.81
262144                 3915.02
524288                 3829.10
1048576                3726.22
2097152                3547.74
4194304                3451.69

Regards,
Tetsuya Mishima

> sm is deprecated in 2.0.0 and will likely be removed in favor of vader in
2.1.0.
>
> This issue is probably this known issue:
https://github.com/open-mpi/ompi-release/pull/1250
>
> Please apply those commits and see if it fixes the issue for you.
>
> -Nathan

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