Hi Nathan, surely, OpenMPI was compiled with the Valgrind support:
%/opt/mpi/openmpi-1.8.4.dbg/bin/ompi_info | grep -i memchecker MCA memchecker: valgrind (MCA v2.0, API v2.0, Component v1.8.4) The following configure options were used: --enable-mem-debug --enable-debug --enable-memchecker --with-valgrind --with-mpi-param-check Best, Victor.