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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