MPI_Wtime function

Returns an elapsed time on the calling processor.

Syntax

double MPIAPI MPI_Wtime(void);

Parameters

This function has no parameters.

Return value

Time in seconds since an arbitrary time in the past.

Fortran

    DOUBLE PRECISION MPI_WTIME()

Remarks

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.

This is a function, declared as DOUBLE PRECISION MPI_WTIME() in Fortran.

Requirements

See also

MPI Management Functions