Hi Mike, All of the test suite utility functions are implemented in `test/mpi/util/mtest.c` if you’re in C. The Fortran variations are generated in there as well under the fortran directory. How they are linked however depends on your configuration. The easiest way to figure out how a particular file is compiled is to add `V=1` to your `make` line. For instance, if I’m compiling on particular test on my machine: wbland@iBland:ft$ make V=1 barrier depbase=`echo barrier.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\ /Users/wbland/tools/bin/mpicc -DHAVE_CONFIG_H -I. -I../include -I../include -I../include -MT barrier.o -MD -MP -MF $depbase.Tpo -c -o barrier.o barrier.c &&\ mv -f $depbase.Tpo $depbase.Po /Users/wbland/tools/bin/mpicc -o barrier barrier.o ../util/mtest.o Your configuration will change this obviously. Thanks, Wesley On Aug 1, 2014, at 2:52 PM, Michael L. Stokes <[email protected]<mailto:[email protected]>> wrote: I would like to find the location in the distribution to the source code for the MTest_* prototypes referenced in the mpitest.h file. Also I'd like to know library is linked to to acces these calls. Examples, MTest_Init( int *, char *** ), MTest_Finalize(int), etc. Thanks Mike _______________________________________________ discuss mailing list [email protected]<mailto:[email protected]> To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss