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C******************************************************************************

C FILE: omp_hello.f

C DESCRIPTION:

C   OpenMP Example - Hello World - Fortran Version

C   In this simple example, the master thread forks a parallel region.

C   All threads in the team obtain their unique thread number and print it.

C   The master thread only prints the total number of threads.  Two OpenMP

C   library routines are used to obtain the number of threads and each

C   thread's number.

C AUTHOR: Blaise Barney  5/99

C LAST REVISED:

C******************************************************************************

      PROGRAM HELLO

      INTEGER NTHREADS, TID, OMP_GET_NUM_THREADS,

     +        OMP_GET_THREAD_NUM

C     Fork a team of threads giving them their own copies of variables

!$OMP PARALLEL PRIVATE(NTHREADS, TID)

C     Obtain thread number

      TID = OMP_GET_THREAD_NUM()

      PRINT *, 'Hello World from thread = ', TID

C     Only master thread does this

      IF (TID .EQ. 0) THEN

        NTHREADS = OMP_GET_NUM_THREADS()

        PRINT *, 'Number of threads = ', NTHREADS

      END IF

C     All threads join master thread and disband

!$OMP END PARALLEL

      END