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Subject: [OMPI users] OMPI and mpipov
From: Matthias Hovestadt (maho_at_[hidden])
Date: 2008-07-11 03:18:13


Hi!

I'm working in a project fucusing on fault tolerance in
Grid systems. We have been using LAM-MPI and BLCR so far,
now I want to evaluate OpenMPI.

I read in the mailing lists that the current stable version
of OpenMPI lacks many features on checkpointing, making it
recommended to use the development version from SVN.

All my small test applications are working without any
problems. Unfortunately executing the mpi-enabled version of
Povray 3.1 failed, which we have used as standard demo
application so far:

[grid-demo:09575] *** An error occurred in MPI_Recv
[grid-demo:09575] *** on communicator MPI_COMM_WORLD
[grid-demo:09575] *** MPI_ERR_TRUNCATE: message truncated
[grid-demo:09575] *** MPI_ERRORS_ARE_FATAL (goodbye)
--------------------------------------------------------------------------
mpirun has exited due to process rank 0 with PID 9575 on
node grid-demo exiting without calling "finalize". This may
have caused other processes in the application to be
terminated by signals sent by mpirun (as reported here).
--------------------------------------------------------------------------

I found the following posting about this error:
http://www.open-mpi.org/community/lists/devel/2006/11/1191.php

We did not have any problems with mpi-povray so far, but
maybe the described problem applies to mpi-povray and the
problem only did not show up before because other MPI
flavors are more flexible.

Therefore my question to this list: did anybody of you
succeed in executing mpi-povray?

Best,
Matthias