1. Performance report
Load the performance report module module load perf-report
Run your program with perf-report perf-report mpirun -np 4 bin/bt.B.4.mpi_io_simple perf-report my-threaded-program.x perf-report my-serial-program.x
Locate the report files bt.B.4_4p_ _12-24.txt
bt.B.4_4p_ _12-24.html
my-threaded-program.x_4p_ _12-24.*

2. Performance report The text file can be read by humans:
Summary: bt.B.4.mpi_io_simple is I/O-bound in this configuration
CPU: % |===|
MPI: % |
I/O: % |====|

3. Performance report