MPI_Wtick(3OpenMPI) MPI_Wtick(3OpenMPI)
NAME
MPI_Wtick - Returns the resolution of MPI_Wtime.
SYNTAX
C Syntax
#include <mpi.h>
double MPI_Wtick()
Fortran Syntax
INCLUDE 'mpif.h'
DOUBLE PRECISION MPI_WTICK()
C++ Syntax
#include <mpi.h>
double 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(3)
Open MPI 1.2 September 2006 MPI_Wtick(3OpenMPI)
Mac OS X 10.6 - Generated Thu Sep 17 20:13:25 CDT 2009