MPUTIL_MASTER_BEGIN
Begin a block of code to be executed by only the master process
Notes
This macro defines a block of code to be executed by only a single process,
even in the parallel case. For example, it can be used to output a
progress indicator, as in:
MPUTIL_BEGIN
...
MPUTIL_MASTER_BEGIN
printf("Running test with %d processes\n", MPUTIL_CURSIZE)
MPUTIL_MASTER_END
...
MPUTIL_END