MPICH Applications
NOTE >> In many cases, you can bypass the procedure described in this section. For more information, see
“Debugging MPI Programs”.
To debug Message Passing Interface/Chameleon Standard (MPICH) applications, you must use MPICH version 1.2.3 or later on a homogeneous collection of computers. If you need a copy of MPICH, you can obtain it at no cost from Argonne National Laboratory at
http://www.mpich.org/downloads/. (We strongly urge that you use a later version of MPICH. The
TotalView Platforms and Systems Requirements document has information on versions that work with TotalView.)
The MPICH library should use the ch_p4, ch_p4mpd, ch_shmem, ch_lfshmem, or ch_mpl devices.
• For networks of workstations, the default MPICH library is ch_p4.
• For shared-memory SMP computers, use ch_shmem.
• On an IBM SP computer, use the ch_mpl device.
The MPICH source distribution includes all these devices. Choose the one that best fits your environment when you configure and build MPICH.
NOTE >> When configuring MPICH, you must ensure that the MPICH library maintains all of the information that TotalView requires. This means that you must use the -enable-debug option with the MPICH configure command. (Versions earlier than 1.2 used the --debug option.) In addition, the TotalView Release Notes contains information on patching your MPICH version 1.2.3 distribution.
For more information on MPICH applications, see
“MPICH Debugging Tips”.