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Subject: Re: [OMPI users] MPI processes hang when using OpenMPI 1.3.2 and Gcc-4.4.0
From: Ashley Pittman (ashley_at_[hidden])
Date: 2009-11-18 12:17:29


On Wed, 2009-11-18 at 01:28 -0800, Bill Broadley wrote:
> A rather stable production code that has worked with various versions
> of MPI
> on various architectures started hanging with gcc-4.4.2 and openmpi
> 1.3.33
>
> Which lead me to this thread.

If you're investigating hangs in a parallel job take a look at the tool
linked to below (padb), it should be able to give you a parallel stack
trace and the message queues for the job.

http://padb.pittman.org.uk/full-report.html

Ashley,

-- 
Ashley Pittman, Bath, UK.
Padb - A parallel job inspection tool for cluster computing
http://padb.pittman.org.uk