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Subject: Re: [OMPI users] Intra-node communication
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2012-06-01 11:40:59

On Jun 1, 2012, at 11:05 AM, Mudassar Majeed wrote:

> Running with enabled shared memory gave me the following error.
> mpprun INFO: Starting openmpi run on 2 nodes (16 ranks)...
> --------------------------------------------------------------------------
> A requested component was not found, or was unable to be opened. This
> means that this component is either not installed or is unable to be
> used on your system (e.g., sometimes this means that shared libraries
> that the component requires are unable to be found/loaded). Note that
> Open MPI stopped checking at the first component that it did not find.
> Host: n568
> Framework: btl
> Component: tcp
> ----------------
> may be it is not installed on our supercomputing center. What do you suggest ?

Perhaps TCP is not installed; that's possible. If you have another interconnect (e.g., IB?), perhaps you should use this instead:

   --mca btl openib,sm,self

Jeff Squyres
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