Parallel timer for high-performance computing.
To run the example, use the following command:
FORTRAN mpif90 ptimer.f90 ./examples/profiling-axpy.f90 -o ./examples/profiling-axpy.out; ./examples/profiling-axpy.out
C++ mpic++ -std=c++11 -I. ./examples/profiling-axpy.cpp -o ./examples/profiling-axpy.out; ./examples/profiling-axpy.out