Бражников Е.А. ЛР№3 Умножение плотных матриц. Элементы типа double. Блочная схема, алгоритм Фокса. TBB.

1706-4/brazhnikov_ea/TBB/Fox.cpp

@@ -0,0 +1,106 @@
+#include "Fox.h"
+#include <tbb/tbb.h>
+#include <iostream>
+
+using namespace tbb;
+using namespace std;
+
+void PrintMatrix(double* matrix, int N) {
+
+	int M = N;
+	for (int i = 0; i < N; i++) {
+		for (int j = 0; j < M; j++)
+		{
+			cout << matrix[i * M + j] << " ";
+			for (int k = 0; k < (5 - log10((double)(matrix[i * M + j]))); k++)
+				cout << " ";
+		}
+		cout << endl;
+	}
+	cout << endl;
+}
+
+void MatrixCreate(double* A, double* B, double* C, double* CSeq, int size) {
+	for (int i = 0; i < size * size; ++i) {
+		A[i] = rand() % 10 + 1;
+		B[i] = rand() % 10 + 1;
+		C[i] = 0;
+		CSeq[i] = 0;
+	}
+}
+
+void Multiplication(double* Ablock, double* Bblock, double* Cblock, int _blockSize)
+{
+	double temp;
+	for (int i = 0; i < _blockSize; i++)
+		for (int j = 0; j < _blockSize; j++) {
+			temp = 0;
+			for (int k = 0; k < _blockSize; k++)
+				temp += Ablock[i * _blockSize + k] * Bblock[k * _blockSize + j];
+			Cblock[i * _blockSize + j] += static_cast<int>(temp * 100) / 100;
+		}
+}
+
+
+void SequentialAlgorithm(double* A, double* B, double* C, int size) {
+	for (int i = 0; i < size * size; ++i)
+		C[i] = 0;
+	Multiplication(A, B, C, size);
+}
+
+class ClassFoxAlg {
+private:
+	static int threadCounter;
+	static mutex myMutex;
+	const double* A;
+	const double* B;
+	double* C;
+	int size;
+	int procNum;
+public:
+	static void SetToZerothreadCounter() {
+		threadCounter = 0;
+	}
+
+	ClassFoxAlg(const double* A_, const double* B_, double* C_, int size_, int procNum_) : A(A_), B(B_), C(C_), size(size_), procNum(procNum_) {}
+
+	void operator()(const tbb::blocked_range<int>& iter) const {
+		int Grid = int(sqrt(procNum));
+		int BlockSize = size / Grid;
+		{
+
+			tbb::mutex::scoped_lock lock;
+			lock.acquire(myMutex);
+			int RowIndex = threadCounter / Grid;
+			int ColIndex = threadCounter % Grid;
+			threadCounter++;
+			lock.release();
+
+			for (int iter = 0; iter < Grid; iter++)
+			{
+				for (int i = RowIndex * BlockSize; i < (RowIndex + 1) * BlockSize; i++)
+				{
+					for (int j = ColIndex * BlockSize; j < (ColIndex + 1) * BlockSize; j++)
+					{
+						for (int k = iter * BlockSize; k < (iter + 1) * BlockSize; k++)
+						{
+							C[i * size + j] += A[i * size + k] * B[k * size + j];
+						}
+					}
+				}
+			}
+		}
+	}
+};
+
+
+tbb::mutex ClassFoxAlg::myMutex;
+int ClassFoxAlg::threadCounter = 0;
+void Fox(const double* A, const double* B, double* C, int size, int procNum) {
+
+	ClassFoxAlg::SetToZerothreadCounter();
+
+	ClassFoxAlg processing(A, B, C, size, procNum);
+
+	parallel_for(blocked_range<int>(0, procNum, 1), processing);
+}

1706-4/brazhnikov_ea/TBB/Fox.h

@@ -0,0 +1,7 @@
+#pragma once
+
+void PrintMatrix(double* matrix, int N);
+void MatrixCreate(double* A, double* B, double* C, double* CSeq, int size);
+void Multiplication(double* Ablock, double* Bblock, double* Cblock, int _blockSize);
+void SequentialAlgorithm(double* A, double* B, double* C, int size);
+void Fox(const double* A, const double* B, double* C, int size, int procNum);

1706-4/brazhnikov_ea/TBB/Source.cpp

@@ -0,0 +1,81 @@
+#include <iostream>
+#include <tbb/tbb.h>
+#include "Fox.h"
+
+using namespace tbb;
+using namespace std;
+
+int main(int argc, char** argv)
+{
+	double* A;
+	double* B;
+	double* CSeq;
+	double* CFox;
+
+	double StartFoxAlg = 0, FinFoxAlg = 0, StartSeqAlg = 0, FinSeqAlg = 0; //time
+
+	int size = 16; //matrix size
+	int procNum = 4; //num of proc
+	int BlockSize = int(sqrt(procNum));  //size of block
+
+	//
+	task_scheduler_init init(procNum);
+	//
+	if (BlockSize * BlockSize == procNum && size % BlockSize == 0) {
+
+
+		//initialization
+		A = new double[size * size];
+		B = new double[size * size];
+		CSeq = new double[size * size];
+		CFox = new double[size * size];
+		MatrixCreate(A, B, CFox, CSeq, size);
+		//
+
+		//print on screen
+		if (size < 30) {
+			cout << "Matrix A" << endl;
+			PrintMatrix(A, size);
+			cout << "Matrix B" << endl;
+			PrintMatrix(B, size);
+		}
+		//
+
+		//FoxAlgPar
+		tick_count StartFoxAlg = tick_count::now();
+		if (procNum != 1) {
+
+			Fox(A, B, CFox, size, procNum);
+
+		}
+		tick_count FinFoxAlg = tick_count::now();
+		//
+
+		//FoxAlgSeq
+		///task_scheduler_init init(1);
+		tick_count StartSeqAlg = tick_count::now();
+		SequentialAlgorithm(A, B, CSeq, size);
+		tick_count FinSeqAlg = tick_count::now();
+		//
+
+
+		//print on screen
+		if (size < 30) {
+			cout << "Parallel Alg " << endl;
+			PrintMatrix(CFox, size);
+		}
+		if (size < 30) {
+			cout << "Seq Alg " << endl;
+			PrintMatrix(CSeq, size);
+		}
+		cout << "===========================================" << endl;
+		cout << "Time of parallel alg is " << (FinFoxAlg - StartFoxAlg).seconds() << endl;
+		cout << "Time of seq alg is " << (FinSeqAlg - StartSeqAlg).seconds() << endl;
+		cout << "Acceleration = " << (FinSeqAlg - StartSeqAlg).seconds() / (FinFoxAlg - StartFoxAlg).seconds() << endl;
+		//
+	}
+	else
+	{
+		cout << "Error" << endl;
+	}
+}

1706-4/brazhnikov_ea/TBB/TBB.sln

@@ -0,0 +1,31 @@
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1706-4/brazhnikov_ea/TBB/TBB.vcxproj

@@ -0,0 +1,158 @@
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