There are two test cases in this directory.
(1) C test case
This test case test non-blocking functions.
mpiexec -n 4 mcoll_perf  //test the blocking I/O and non-blocking I/O

The default path to write output is "./". 

You can change the path and output path:
mpiexec -n 4 mcoll_perf -f testfile.nc

(2) Fortran test case
mpiexec -n 4 mcoll_testf
