Problem with MPICH and Intel and PGI Compilers on Linux

Jeff Layton jeffrey.b.layton at lmco.com
Tue Feb 4 07:06:05 EST 2003


Good morning,

   I'm having trouble with my MPI code using MPICH-1.2.4 or 1.2.5 and
the Intel Fortran/C compilers for Linux (v. 6.0 and 7.0 of the compilers)
and the PGI compilers for linux (v4.0.2).
   I'm running on a Linux cluster of Xeon/2.4 GHz CPUs (2 per board)
that is connected via GigE through a Foundry switch. The nodes are
running RH 7.3 Linux (2.4.20 kernel - created by IBM).
   MPICH-1.2.4 was built and installed by IBM using the Intel 7.0
compilers for Linux (Fortran and C). I built MPICH-1.2.5 in my home
account using both the Intel 7.0 compilers and the Intel 6.0 compilers.
MPICH-1.2.4 was built with the PGI compilers (v. 4.0.2).
   So, we have six combinations, the three compilers, and the two versions
of MPICH. In all 6 cases, my code stops, hitting a logic check reading the
input data and stops based on this value. However, before it exits (stops),
the code spits out the rank for each process. Here is a snippet of the
output of the code:

Before call to rg_one: myrank -1073743612
 Error: partition with max. cells not found
 STOPPING

Notice that the rank is incorrect.
   This happens for all 6 combinations. However, when I test the exact
same code using MPI/Pro, it works correctly (for all 3  compilers).
Also, the code works correctly with MPI/Pro and Myrinet and both
Intel compilers and the PGI compiler.
   Any help is greatly appreciated.

Thanks!

Jeff

--

Jeff Layton
Senior Engineer
Lockheed-Martin Aeronautical Company - Marietta
Aerodynamics & CFD

"Is it possible to overclock a cattle prod?" - Irv Mullins

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