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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
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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