MPI-Utils is a meta package that depends on MPI-Start and the yaim mpi module for configuration of the MPI support in the CE and WN. Administrators must install a MPI implementation and configure it at the site. Most Linux distributions provide ready to use packages for Open MPI and MPICH implmentations.
MPI-Utils can be installed from the EMI repositories, and should be as easy as:
yum install glite-mpi
or for EMI-2 and onwards:
yum install emi-mpi
In the WN, a MPI implementation must be installed also. Open MPI is recommended (the devel package allows users to compile their applications):
yum install openmpi openmpi-devel
devel packages and compilers
The devel packages of the MPI packages do not include the compiler as dependency! You should install it also if you want to support the compilation of MPI applications (e.g. gcc, gcc-gfortran, gcc-g++)