For general information about writing MPI programs, refer to any of the several MPI source documents cited in the section "Related Publications". Sun MPI 4.0 is part of the Sun HPC ClusterTools 3.0 suite of software. Jobs can be run using either LSF Suite or the Sun CRE. If you are using LSF Suite, see Platform Computing's documentation and the Sun MPI 4.0 User's Guide: With LSF for more information. If you are using the CRE, see the Sun MPI 4.0 User`s Guide: With CRE for more information. Product notes for Sun MPI are included in Sun HPC ClusterTools 3.0 Product Notes.