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Subject: Re: [OMPI users] IMB-MPI broadcast test stalls for large core counts: debug ideas?
From: Rahul Nabar (rpnabar_at_[hidden])
Date: 2010-08-24 13:58:27

On Mon, Aug 23, 2010 at 9:43 PM, Richard Treumann <treumann_at_[hidden]> wrote:
> Bugs are always a possibility but unless there is something very unusual
> about the cluster and interconnect or this is an unstable version of MPI, it

My MPI version is 1.4.1. This isn't the latest but still fairly
recent. So I assume there is nothing especially unstable about it.

There are a few unusual things about the cluster. We are using a
10GigE ethernet fabric. Each node has dual eth adapters. One 1GigE and
the other 10GigE. These are on seperate subnets although the order of
the eth interfaces is variable. i.e. 10GigE might be eth0 on one and
eth2 on the next. In case this matters. I was told this shouldn't be
an issue.