MPI_Wtick(3)

MPI_Wtick3

Usage

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()

MPI_Wtick — Returns the resolution of MPI_Wtime.

Return value

Time in seconds of resolution of MPI_Wtime.

Overview

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

Releases

15 releases since Debian 2.0 (Hamm); the text changed 13 times.

  1. 2.0–2.1
  2. 3.0
  3. 3.1
  4. 4.0
  5. 5.0
  6. 6.0
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. Arch

From openmpi 5.0.11-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.