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Subject: Re: [OMPI users] How to check OMPI is using IB or not?
From: Brett Pemberton (brett_at_[hidden])
Date: 2010-01-27 02:10:51


----- "Sangamesh B" <forum.san_at_[hidden]> wrote:

> Hi all,
>
> If an infiniband network is configured successfully, how to confirm
> that Open MPI is using infiniband, not other ethernet network
> available?
>

At a low level simplistic way, how about:

[root_at_tango003 ~]# lsof | grep /dev/infiniband
namd2 7271 weimin mem CHR 231,192 8306 /dev/infiniband/uverbs0
namd2 7271 weimin 13u CHR 231,192 8306 /dev/infiniband/uverbs0
...

Here i can see that the namd that I compiled with openmpi is using IB.

cheers,

     / Brett

-- 
Brett Pemberton - VPAC HPC Team Leader
http://www.vpac.org/ - (03) 9925 4899