Synopsis
double MPI_Wtick(void)Return value
Time in seconds since an arbitrary time in the past.
Notes
This is intended to be a high-resolution, elapsed (or wall) clock.
See MPI_WTICK to determine the resolution of MPI_WTIME.
If the attribute MPI_WTIME_IS_GLOBAL is defined and true, then the
value is synchronized across all processes in MPI_COMM_WORLD.
Notes for Fortran
This is a function, declared as DOUBLE PRECISION MPI_WTIME in Fortran.
Notes for Fortran
All MPI routines in Fortran (except for 'MPI_WTIME' and 'MPI_WTICK') have an additional argument 'ierr' at the end of the argument list. 'ierr' is an integer and has the same meaning as the return value of the routine in C. In Fortran, MPI routines are subroutines, and are invoked with the 'call' statement.
All MPI objects (e.g., 'MPI_Datatype', 'MPI_Comm') are of type 'INTEGER' in Fortran.