To build a version of the VCODE interpreter using MPI, you will need to do some customization. Read the cm5_mpi, paragon_mpi and sp1_mpi entries in the top-level Makefile, and modify one of them (and the appropriate mpiCC and mpidir variables) to match your MPI installation. Note that only the MPICH implementation of MPI from Argonne/Mississipi State is directly supported by this release, and that ANSI C is required. See the Makefile and README files in the vcode and cvl/mpi subdirectories for further details. A comparison of the CM-2, CM-5 and MPI versions is given in .