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Subject: Re: [OMPI users] openmpi + share points
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-05-15 08:14:42


Sorry for the delay in replying.

It is probably much easier to NFS share the installation directory so that the exact same installation directory is available on all nodes. For example, if you installed OMPI into /opt/openmpi-1.4.2, then make /opt/openmpi-1.4.2 available on all nodes (even if they're mounted network shares).

Can you try that?

On May 10, 2010, at 9:04 AM, Christophe Peyret wrote:

> Hello,
>
> I am building a cluster with 6 Apple xserve running OSX Server 10.6 :
>
> node1.cluster
> node2.cluster
> node3.cluster
> node4.cluster
> node5.cluster
> node6.cluster
>
> I've intalled openmpi in directory /opt/openmpi-1.4.2 of node1 then I made a share point of /opt -> /Network/opt and define variables
>
> export MPI_HOME=/Network/opt/openmpi-1.4.2
> export OPAL_PREFIX=/Network/opt/openmpi-1.4.2
>
> I can access to openmpi from all nodes. However, I still face a problem when I launch a computation
>
> mpirun --prefix /Network/opt/openmpi-1.4.2 -n 4 -hostfile ~peyret/hostfile space64 -f Test/cfm56_hp_Rigid/cfm56_hp_Rigid.def -fast
>
> is returns me the error message :
>
> [node2.cluster:09163] mca: base: component_find: unable to open /Network/opt/openmpi-1.4.2/lib/openmpi/mca_odls_default: file not found (ignored)
> [node4.cluster:08867] mca: base: component_find: unable to open /Network/opt/openmpi-1.4.2/lib/openmpi/mca_odls_default: file not found (ignored)
> [node3.cluster:08880] mca: base: component_find: unable to open /Network/opt/openmpi-1.4.2/lib/openmpi/mca_odls_default: file not found (ignored)
>
> any idea ?
>
> Christophe
>
>
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-- 
Jeff Squyres
jsquyres_at_[hidden]
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