Re: [PerfSuite-users] mpirun with perfsuite

[Rick K. <rk...@nc...>]

Giuseppe,

There is one other thing I forgot to mention here:

> /usr/local/mpich-1.2.7/bin/mpirun -np 2 /usr/local/bin/psrun cpi-mpi

If this option still doesn't work for you, it might be that the MPI 
implementation is changing the command-line arguments supplied to psrun 
when the MPI program actually starts on the remote nodes.  This would be 
the case, for example, if you are using the "ch_p4" version of MPICH as 
supplied by Argonne.  What is happening there is that psrun isn't actually 
seeing the command "cpi-mpi", but something else altogether that is put 
back in order by the MPI routine MPI_Init.  However, that is too late for 
psrun to be able to do its work.

The only workarounds available for this problem are:

1. link the MPI application with the PMPI version of PerfSuite's libpshwpc
library, which is built if you supplied the configure-time option
--enable-mpi.  The library is called "libpshwpc_mpi" and will be installed
in the standard PerfSuite library directory.

2. Insert calls to libpshwpc in the MPI application itself.

Both of these workarounds eliminate the need for using psrun altogether, 
so you should omit psrun in your mpirun command line if you use them.

This topic was discussed some months back in this mailing list but I 
thought it would be helpful to recap.

Thanks,
Rick