Installed release on nscc for centos 6 is 3.2.2 invoke with mb located in /usr/local/bin
Installed multi processor version on centos 7 nodes is 3.2.6 as mb-mpi and located in /usr/local/bin. To use this version you will need to add to your
/usr/lib64/openmpi/bin to your PATH environment variables and
/usr/lib64/compat-openmpi/lib to your LD_LIBRARY_PATH environment variables
this is done in either .cshrc for tcsh users, or .profile for bash users.