Merge commit '4ebe6417a5fce5f0994fc0c31bebf732be96a07c' as 'boost'

boost/libs/numeric/odeint/test_external/mpi/split_test.cpp

@@ -0,0 +1,61 @@
+/*
+ Copyright 2013 Karsten Ahnert
+ Copyright 2013 Mario Mulansky
+ Copyright 2013 Pascal Germroth
+
+ Distributed under 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)
+ */
+
+#include <iostream>
+#include <sstream>
+
+#define BOOST_TEST_MODULE odeint_mpi
+#include <boost/test/unit_test.hpp>
+
+#include <boost/numeric/odeint/external/mpi/mpi.hpp>
+
+using namespace boost::numeric::odeint;
+
+boost::mpi::environment env;
+
+BOOST_AUTO_TEST_SUITE( split_test_suite )
+
+BOOST_AUTO_TEST_CASE( split_test )
+{
+    boost::mpi::communicator world;
+
+    const size_t total_size = 31;
+
+    std::vector<size_t> in_data, out_data;
+    mpi_state< std::vector<size_t> > state(world);
+
+    // generate data on master
+    if(world.rank() == 0)
+        for(size_t i = 0 ; i < total_size ; i++) in_data.push_back(i);
+
+    // copy to nodes
+    split( in_data, state );
+
+    BOOST_REQUIRE((state().size() == total_size / world.size())
+               || (state().size() == total_size / world.size() + 1));
+
+    {
+        std::ostringstream ss;
+        ss << "state[" << world.rank() << "].data = {";
+        std::copy(state().begin(), state().end(), std::ostream_iterator<size_t>(ss, ", "));
+        ss << "}\n";
+        std::clog << ss.str() << std::flush;
+    }
+
+    // copy back to master
+    if(world.rank() == 0) out_data.resize(in_data.size());
+    unsplit( state, out_data );
+
+    if(world.rank() == 0)
+        BOOST_REQUIRE_EQUAL_COLLECTIONS(in_data.begin(), in_data.end(), out_data.begin(), out_data.end());
+}
+
+
+BOOST_AUTO_TEST_SUITE_END()