Re: [OMPI users] Simple MPI hello world hangs over IB

2013-02-11 Thread Jeff Squyres (jsquyres)
On Feb 4, 2013, at 10:55 AM, Bharath Ramesh wrote: > I am trying to debug an issue which is really weird. I have > simple MPI hello world application (attached) that hangs when I > try to run on our cluster using 256 nodes with 16 cores on each > node. The cluster uses QDR IB. > > I am able to r

[OMPI users] Simple MPI hello world hangs over IB

2013-02-04 Thread Bharath Ramesh
I am trying to debug an issue which is really weird. I have simple MPI hello world application (attached) that hangs when I try to run on our cluster using 256 nodes with 16 cores on each node. The cluster uses QDR IB. I am able to run the test over ethernet by excluding openib from the btl. Howev