Some explanations on the MPI implementation of a subset of NPB 3.3 (NPB3.3-MPI)
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NPB-MPI is a sample MPI implementation based on NPB2.4 and NPB3.0-SER.
This subset contains three of the original benchmarks: one in Fortran: EP; 
one in C: IS, as well as the DT benchmark, written in C, introduced in NPB3.2-MPI.


1. Compilation

   Before compilation, one needs to check the configuration file
   'make.def' in the config directory and modify the file if necessary.  
   If it does not (yet) exist, copy 'make.def.template' or one of the
   sample files in the NAS.samples subdirectory to 'make.def' and
   edit the content for site- and machine-specific data.  Then

       make <benchmark-name> NPROCS=<number> CLASS=<class> \
         [SUBTYPE=<type>] [VERSION=VEC]

   where <benchmark-name>  is  "dt", "ep", or "is",
         <number>          is the number of processes
         <class>           is "S", "W", "A", "B", "C", "D", or "E"

   Classes C, D and E are not available for DT.
   Class E is not available for IS.

   Class D for IS (Integer Sort) requires a compiler/system that 
   supports the "long" type in C to be 64-bit.  
   
   
2. Execution

   The executable is named <benchmark-name>.<class>.<nprocs>
   The executable is placed in the bin subdirectory (or in the directory 
   BINDIR specified in make.def, if you've defined it). The method for 
   running the MPI program depends on your local system.