private static void CalculateInOrder(int size)
{
var stopWatch = new Stopwatch();
stopWatch.Start();
InitializeInputData(size);
_finalResult = MultiplicationHelper.Multiply(_matrix, _vector);
stopWatch.Stop();
Console.WriteLine($"Time elapsed: {stopWatch.Elapsed} ms");
}
private static void CalculateInParallel(ref string[] args, int size)
{
MPI.Environment.Run(ref args, comm =>
{
var stopWatch = new Stopwatch();
stopWatch.Start();
InitializeProcessCommonData(size, comm.Size);
InitializeRowDistributionData(size, comm.Size);
if (comm.Rank == 0)
{
InitializeInputData(size);
//PrintInput();
foreach (var process in _rowProcessDistribution.Keys)
{
var rowsToProcess = _rowProcessDistribution[process];
var rowsArray = GetMatrixRowsList(rowsToProcess);
comm.Send(rowsArray, process, (int)Tags.MatrixRequest);
comm.Send(_vector.ToList(), process, (int)Tags.VectorRequest);
}
}
else
{
if (_rowProcessDistribution.ContainsKey(comm.Rank))
{
var rowsArray = comm.Receive <List <int> >(0, (int)Tags.MatrixRequest);
var vector = comm.Receive <List <int> >(0, (int)Tags.VectorRequest).ToArray();
var separateRows = GetSeparateRowsFromList(rowsArray, size);
var multiplicationResults = new List <int>();
foreach (var row in separateRows)
{
multiplicationResults.Add(MultiplicationHelper.Multiply(row, vector));
}
_localResult = multiplicationResults.ToArray();
}
}
comm.GatherFlattened(_localResult, 0, ref _finalResult);
if (comm.Rank == 0)
{
_finalResult = _finalResult.Skip(_rowsPerProcessCount).Take(size).ToArray();
stopWatch.Stop();
//PrintFinalOutput();
Console.WriteLine($"Time elapsed: {stopWatch.Elapsed} ms");
}
});
}