1 files changed, 42 insertions, 0 deletions
diff --git a/src/boost/libs/mpi/test/python/ring_test.py b/src/boost/libs/mpi/test/python/ring_test.py
new file mode 100644
index 00000000..3c8b5b92
--- /dev/null
+++ b/src/boost/libs/mpi/test/python/ring_test.py
@@ -0,0 +1,42 @@
+# Copyright (C) 2006 Douglas Gregor <doug.gregor -at- gmail.com>.
+
+# Use, modification and distribution is subject to the Boost Software
+# License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+# Test basic communication.
+
+import boost.parallel.mpi as mpi
+
+def ring_test(comm, value, kind, root):
+    next_peer = (comm.rank + 1) % comm.size;
+    prior_peer = (comm.rank + comm.size - 1) % comm.size;
+    
+    if comm.rank == root:
+        print ("Passing %s around a ring from root %d..." % (kind, root)),
+        comm.send(next_peer, 0, value)
+        (other_value, stat) = comm.recv(return_status = True)
+        assert value == other_value
+        assert stat.source == prior_peer
+        assert stat.tag == 0
+    else:
+        msg = comm.probe()
+        other_value = comm.recv(msg.source, msg.tag)
+        assert value == other_value
+        comm.send(next_peer, 0, other_value)
+
+    comm.barrier()
+    if comm.rank == root:
+        print "OK"
+    pass
+
+if mpi.world.size < 2:
+    print "ERROR: ring_test.py must be executed with more than one process"
+    mpi.world.abort(-1);
+    
+ring_test(mpi.world, 17, 'integers', 0)
+ring_test(mpi.world, 17, 'integers', 1)
+ring_test(mpi.world, 'Hello, World!', 'string', 0)
+ring_test(mpi.world, 'Hello, World!', 'string', 1)
+ring_test(mpi.world, ['Hello', 'MPI', 'Python', 'World'], 'list of strings', 0)
+ring_test(mpi.world, ['Hello', 'MPI', 'Python', 'World'], 'list of strings', 1)