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Subject: Re: [OMPI users] Different Interfaces on Different Nodes .. OpenMPI 1.2.3, 1.2.4 ..
From: Tim Prins (tprins_at_[hidden])
Date: 2008-04-17 08:23:19

Hi Graham,

Have you tried running without the btl_tcp_if_include line in the .conf
file? Open MPI is usually smart enough to auto detect and choose the
correct interfaces.

Hope this helps,


Graham Jenkins wrote:
> We're moving from using a single (eth0) interface on our execute nodes
> to using a bond interface (bond0) for resilience.
> And what we're seeing on those nodes which have been upgraded is:
> --
> [0,1,1][btl_tcp_component.c:349:mca_btl_tcp_component_create_instances]
> invalid interface "eth0"
> --
> This of course, is because all nodes share a common copy of
> openmpi-mca-params.conf .. in which its says:
> --
> btl_tcp_if_include=eth0
> --
> So .. does anybody have a suggestion for a way around this during our
> migration/upgrade period?
> If we place "bond0" in there as well, then we get error messages about
> whichever one is absent on the node where execution is happening.
> Regards ..