public static void DoTest(string[] args)
{
using (new MPI.Environment(ref args))
{
Intracommunicator world = Communicator.world;
world.Barrier();
// Test addition of integers
if (world.Rank == 0)
{
System.Console.Write("Testing exclusive scan of strings...");
}
int partial_sum = world.ExclusiveScan(world.Rank, addInts);
int expected = world.Rank * (world.Rank - 1) / 2;
MPIDebug.Assert(partial_sum == expected);
if (world.Rank == 0)
{
System.Console.WriteLine(" done.");
}
// Test addition of integer points
if (world.Rank == 0)
{
System.Console.Write("Testing exclusive scan of strings...");
}
Point point_sum = world.ExclusiveScan(new Point(world.Rank, 1), Point.Plus);
MPIDebug.Assert(point_sum.x == partial_sum && point_sum.y == world.Rank);
if (world.Rank == 0)
{
System.Console.WriteLine(" done.");
}
// Test addition of integer arrays
if (world.Rank == 0)
{
System.Console.Write("Testing exclusive scan of integer arrays...");
}
int[] arraySum = world.ExclusiveScan(new int[] { world.Rank, 1 }, Operation <int> .Add);
MPIDebug.Assert((world.Rank == 0 && arraySum == null) ||
(world.Rank != 0 && arraySum[0] == partial_sum && arraySum[1] == world.Rank));
if (world.Rank == 0)
{
System.Console.WriteLine(" done.");
}
// Test concatenation of strings
if (world.Rank == 0)
{
System.Console.Write("Testing exclusive scan of strings...");
}
string str = world.ExclusiveScan(world.Rank.ToString(), Operation <string> .Add);
string expectedStr = null;
if (world.Rank != 0)
{
expectedStr = "";
for (int p = 0; p < world.Rank; ++p)
{
expectedStr += p.ToString();
}
}
MPIDebug.Assert(expectedStr == str);
if (world.Rank == 0)
{
System.Console.WriteLine(" done.");
}
// Test concatenation of string arrays
if (world.Rank == 0)
{
System.Console.Write("Testing exclusive scan of string arrays...");
}
string[] strArray = world.ExclusiveScan(new string[] { world.Rank.ToString(), "World" }, Operation <string> .Add);
string[] expectedStrs = null;
if (world.Rank != 0)
{
expectedStrs = new string[2] {
"", ""
};
for (int p = 0; p < world.Rank; ++p)
{
expectedStrs[0] += p.ToString();
expectedStrs[1] += "World";
}
MPIDebug.Assert(expectedStrs[0] == strArray[0]);
MPIDebug.Assert(expectedStrs[1] == strArray[1]);
}
else
{
MPIDebug.Assert(expectedStrs == null);
}
if (world.Rank == 0)
{
System.Console.WriteLine(" done.");
}
}
}
