private void RunMultiplyTest(IMatrixMultiplier matrixMultiplier)
{
int length = 4;
int[][] a = new int[length][];
int[][] b = new int[length][];
for (int i = 0; i < length; i++)
{
a[i] = new int[length];
b[i] = new int[length];
for (int j = 0; j < length; j++)
{
a[i][j] = i + j;
b[i][j] = i + j;
}
}
int[][] c = matrixMultiplier.Multiply(a, b);
Assert.AreEqual(5, c[0][0]);
Assert.AreEqual(8, c[0][1]);
Assert.AreEqual(11, c[0][2]);
Assert.AreEqual(8, c[1][0]);
Assert.AreEqual(14, c[1][1]);
Assert.AreEqual(20, c[1][2]);
Assert.AreEqual(11, c[2][0]);
Assert.AreEqual(20, c[2][1]);
Assert.AreEqual(29, c[2][2]);
}
public void IsCorrectMultiplyingTest(int[,] left, int[,] right, int[,] expected, int numberOfTestCase)
{
var threads = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 100 };
if (typeof(T) == typeof(StripedParallelizingMatrixMultiplier) ||
typeof(T) == typeof(SequentiallyParallelizingMatrixMultiplier))
{
foreach (var thread in threads)
{
multiplier = typeof(T) == typeof(StripedParallelizingMatrixMultiplier)
? new StripedParallelizingMatrixMultiplier(thread)
: new SequentiallyParallelizingMatrixMultiplier(thread) as IMatrixMultiplier;
var result = multiplier.Multiply(left, right);
Assert.IsTrue(FunctionsOnMatrices.AreEqual(result, expected));
}
return;
}
var actualResult = multiplier.Multiply(left, right);
Assert.IsTrue(FunctionsOnMatrices.AreEqual(actualResult, expected));
}
private void RunTests(IMatrixMultiplier matrixMultiplier)
{
RunNullTest(matrixMultiplier);
RunZeroLengthTest(matrixMultiplier);
RunNonSquareMatricesTest(matrixMultiplier);
RunDifferentLengthMatrices(matrixMultiplier);
RunMultiplyTest(matrixMultiplier);
}
private static TimeSpan ElapseWorkTime(IMatrixMultiplier multiplier, int[,] left, int[,] right)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
multiplier.Multiply(left, right);
stopwatch.Stop();
return(stopwatch.Elapsed);
}
private void FailIfNotException <TException>(IMatrixMultiplier matrixMultiplier, int[][] a, int[][] b) where TException : System.Exception
{
try
{
matrixMultiplier.Multiply(a, b);
Assert.Fail();
}
catch (TException)
{
}
}
private void RunNonSquareMatricesTest(IMatrixMultiplier matrixMultiplier)
{
int[][] a = new int[2][];
int[][] b = new int[2][];
for (int i = 0; i < a.Length; i++)
{
a[i] = new int[3];
b[i] = new int[3];
}
FailIfNotException <ArgumentException>(matrixMultiplier, a, b);
}
private void RunDifferentLengthMatrices(IMatrixMultiplier matrixMultiplier)
{
int length1 = 2;
int length2 = 3;
int[][] a = new int[length1][];
int[][] b = new int[length2][];
for (int i = 0; i < a.Length; i++)
{
a[i] = new int[length1];
b[i] = new int[length2];
}
FailIfNotException <ArgumentException>(matrixMultiplier, a, b);
}
private static long PerformTest(int size, IMatrixMultiplier multiplier)
{
var matrix = MatrixGenerator.GenerateRandom(size);
//Console.WriteLine("Source:\n" + matrix);
var identity = MatrixGenerator.GenerateIdentity(size);
//Console.WriteLine("Identity:\n" + identity);
var elapsed = TimeMeasurer.Measure(() => { multiplier.Multiply(matrix, identity); });
//Console.WriteLine("Result:\n" + result);
return(elapsed);
}
static async Task MainAsync()
{
Console.WriteLine("Please, choose option");
Console.WriteLine("Press 1 to compare multipliers time of work on different number of threads and constant matrix size");
Console.WriteLine("Press 2 to compare multipliers time of work on different matrix sizes");
Console.WriteLine("Press any key to perform matrix multiplication");
var choice = Console.ReadLine();
switch (choice)
{
case "1":
CompareTimeOfWorkOnConstantMatrixSize();
break;
case "2":
CompareTimeOfWorkDependingOnMatrixSize();
break;
}
Console.WriteLine("Enter path to file with left matrix");
var pathLeft = Console.ReadLine();
Console.WriteLine("Enter path to file with right matrix");
var pathRight = Console.ReadLine();
Console.WriteLine("Enter path to file, where result will be written");
var resultPath = Console.ReadLine();
int[,] left, right;
try
{
var fileReader = new MatrixFileReader();
left = await fileReader.ReadAsync(pathLeft);
right = await fileReader.ReadAsync(pathRight);
}
catch (FileNotFoundException e)
{
Console.WriteLine(e.Message);
return;
}
Console.WriteLine("\nChoose type of multiplier");
Console.WriteLine("1 - Synchronous Matrix Multiplier");
Console.WriteLine("2 - Parallel.For Matrix Multiplier");
Console.WriteLine("3 - Striped Parallelizing Matrix Multiplier");
Console.WriteLine("4 - Sequentially Parallelizing Matrix Multiplier");
Console.WriteLine("Press any key to exit");
choice = Console.ReadLine();
IMatrixMultiplier multiplier = choice switch
{
"1" => new SynchronousMatrixMultiplier(),
"2" => new ParallelForMatrixMultiplier(),
"3" => new StripedParallelizingMatrixMultiplier(),
"4" => new SequentiallyParallelizingMatrixMultiplier(),
_ => null
};
if (multiplier == null)
{
return;
}
Console.WriteLine("Multiplying performs...");
try
{
var result = multiplier.Multiply(left, right);
var fileWriter = new MatrixFileWriter();
await fileWriter.WriteAsync(result, resultPath);
}
catch (ArgumentOutOfRangeException e)
{
Console.WriteLine(e.Message);
return;
}
Console.WriteLine("Ready!");
}
}
private void RunZeroLengthTest(IMatrixMultiplier matrixMultiplier)
{
int[][] a = new int[0][];
int[][] b = new int[0][];
FailIfNotException <ArgumentException>(matrixMultiplier, a, b);
}
private void RunNullTest(IMatrixMultiplier matrixMultiplier)
{
int[][] a = null;
int[][] b = null;
FailIfNotException <ArgumentNullException>(matrixMultiplier, a, b);
}
public MatrixMultipliersTests()
{
multiplier = new T();
}
