Imported from /home/lorry/working-area/delta_boost-tarball/boost_1_54_0.tar.bz2.boost_1_54_0baserock/morph

1 files changed, 30 insertions, 0 deletions

diff --git a/libs/mpi/example/random_min.cpp b/libs/mpi/example/random_min.cpp
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+// Copyright (C) 2006 Douglas Gregor <doug.gregor@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)
+
+// An example using Boost.MPI's reduce() to compute a minimum value.
+#include <boost/mpi.hpp>
+#include <iostream>
+#include <cstdlib>
+namespace mpi = boost::mpi;
+
+int main(int argc, char* argv[])
+{
+  mpi::environment env(argc, argv);
+  mpi::communicator world;
+
+  std::srand(time(0) + world.rank());
+  int my_number = std::rand();
+
+  if (world.rank() == 0) {
+    int minimum;
+    reduce(world, my_number, minimum, mpi::minimum<int>(), 0);
+    std::cout << "The minimum value is " << minimum << std::endl;
+  } else {
+    reduce(world, my_number, mpi::minimum<int>(), 0);
+  }
+
+  return 0;
+}