Hello,

Thank for the advice, it works with NFS !

But :

1) it doesn't work anymore, if I remove --prefix /Network/opt/openmpi-1.4.2 (is there a way to remove it on OSX, already declared  ?)

2) I must use the option -static-intel at link else i have a problem with libiomp5.dylib not found

Christophe


Message: 3
Date: Sat, 15 May 2010 08:14:42 -0400
From: Jeff Squyres <jsquyres@cisco.com>
Subject: Re: [OMPI users] openmpi + share points
To: "Open MPI Users" <users@open-mpi.org>
Message-ID: <6B0CFD91-0E2A-498C-97BD-C6EB974F90BC@cisco.com>
Content-Type: text/plain; charset=us-ascii

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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