omp_get_wtime()

Purpose

The omp_get_wtime function returns a double precision value equal to the number of seconds since the initial value of the operating system real-time clock. The initial value is guaranteed not to change during execution of the program.

The value returned by the omp_get_wtime function is not consistent across all threads in the team.

Class

Function.

Argument Type and Attributes

None.

Result Type and Attributes

Double precision real.

Result Value

The number of seconds since the initial value of the operating system real-time clock.

Examples

      USE omp_lib
      DOUBLE PRECISION START, END
      START = omp_get_wtime()
!     Work to be timed
      END = omp_get_wtime()
      PRINT *, 'Stuff took ', END - START, ' seconds.'
 
IBM Copyright 2003