SYNTAX

   C Syntax
          #include <mpi.h>

          double MPI_Wtick()

   Fortran Syntax
          USE MPI
          ! or the older form: INCLUDE 'mpif.h'
          DOUBLE PRECISION MPI_WTICK()

   Fortran 2008 Syntax
          USE mpi_f08
          DOUBLE PRECISION MPI_WTICK()

RETURN VALUE

       Time in seconds of resolution of MPI_Wtime.

DESCRIPTION

       MPI_Wtick  returns  the  resolution  of  MPI_Wtime in seconds. That is, it returns, as a double-precision
       value, the number of seconds between successive clock ticks. For example, if the clock is implemented  by
       the  hardware  as a counter that is incremented every millisecond, the value returned by MPI_Wtick should
       be 10^-3.

NOTE

       This function does not return an error value. Consequently, the result of calling it before  MPI_Init  or
       after MPI_Finalize is undefined.

       SEE ALSO:

          • MPI_Wtime

COPYRIGHT

       2003-2025, The Open MPI Community

                                                  Sep 06, 2025                                      MPI_WTICK(3)