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5.1 Compiling MPI Programs

In order to analyze the performance of your MPI program, you'll first need to recompile it using a PPW compiler wrapper script. Instead of compiling with mpicc, use ppwmpicc.

For more information on the ppwmpicc command, please see ppwmpicc. If you experience very high overhead (ie, much longer execution times) while running your program under PPW, see Managing Overhead for tips on how to reduce overhead.