function index
#include <stdio.h>
int main( int argc, char *argv[] )
{
double tick;
MPI_Init( 0, 0 );
tick = MPI_Wtick();
printf("A single MPI tick is %0.9f seconds\n", tick);
fflush(stdout);
MPI_Finalize( );
return 0;
}
MPI_Wtick
Returns the resolution of MPI_Wtimedouble MPI_Wtick( void );
Return value
Time in seconds of resolution of MPI_Wtime.
Remarks
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 
Notes for Fortran
This is a function, declared as DOUBLE PRECISION MPI_WTICK() in Fortran.
See Also
also: MPI_Wtime, MPI_Comm_get_attr, MPI_Attr_getExample Code
The following sample code illustrates MPI_Wtick.
#include "mpi.h"#include <stdio.h>
int main( int argc, char *argv[] )
{
double tick;
MPI_Init( 0, 0 );
tick = MPI_Wtick();
printf("A single MPI tick is %0.9f seconds\n", tick);
fflush(stdout);
MPI_Finalize( );
return 0;
}
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