summaryrefslogtreecommitdiffstats
path: root/src/boost/libs/mpi/example/random_scatter.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/boost/libs/mpi/example/random_scatter.cpp')
-rw-r--r--src/boost/libs/mpi/example/random_scatter.cpp37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/boost/libs/mpi/example/random_scatter.cpp b/src/boost/libs/mpi/example/random_scatter.cpp
new file mode 100644
index 00000000..fc8879e4
--- /dev/null
+++ b/src/boost/libs/mpi/example/random_scatter.cpp
@@ -0,0 +1,37 @@
+// 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 gather(): [main]
+
+#include <boost/mpi.hpp>
+#include <boost/mpi/collectives.hpp>
+#include <iostream>
+#include <cstdlib>
+#include <vector>
+
+namespace mpi = boost::mpi;
+
+int main(int argc, char* argv[])
+{
+ mpi::environment env(argc, argv);
+ mpi::communicator world;
+
+ std::srand(time(0) + world.rank());
+ std::vector<int> all;
+ int mine = -1;
+ if (world.rank() == 0) {
+ all.resize(world.size());
+ std::generate(all.begin(), all.end(), std::rand);
+ }
+ mpi::scatter(world, all, mine, 0);
+ for (int r = 0; r < world.size(); ++r) {
+ world.barrier();
+ if (r == world.rank()) {
+ std::cout << "Rank " << r << " got " << mine << '\n';
+ }
+ }
+ return 0;
+}