Intel® MPI Benchmarks 4.0
To check whether your MPI implementation is working correctly, you can use the CPP flag -DCHECK.
Activate the CPP flag -DCHECK through the CPPFLAGS variable and recompile the Intel® MPI Benchmarks executable files. Every message passing result from the Intel® MPI Benchmarks are checked against the expected outcome. Output tables contain an additional column called Defects that displays the difference as floating-point numbers.
NOTE:
The -DCHECK results are not valid as real benchmark data. Deactivate -DCHECK and recompile to get the proper results.