I've attached the requested configuration and ompi_info output, as well as the actual error messages that appear (run.out) when the code is run. I traced it down to the section of code included that is in fail_section.F.
The platform is a Mac Pro running Mac OS X 10.5.2, but I also tried it on Mac OS X Server 10.4.11 (Xserve Xeon) with the same result. Also tried compiling OpenMPI with the Intel C/C++ compilers (version 10.1.012), same result. The code has been run without issue on numerous HPC platforms, and runs with OpenMPI on this platform for small problems. Issue shows up when running larger problems. Using MPICH2 on this platform with same large problem runs fine. The issue appears to occur when calling the MPI_WAITALL statement at the end of the code section; the MPI_IRECV and MPI_ISEND statements complete. Any help is greatly appreciated. _____________________________________________________ Matthew Grismer
run.out
Description: run.out
config.log.gz
Description: config.log.gz
fail_section.F
Description: fail_section.F
mpi_info.txt.gz
Description: mpi_info.txt.gz
