Бражников Е.А. ЛР№2 Умножение плотных матриц. Элементы типа double. Блочная схема, алгоритм Фокса. OpenMP. #148
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| Source.cpp | ||
| c1xx : error C2338: двухэтапный поиск имен не поддерживается для C++/CLI, C++/CX или OpenMP. Используйте /Zc:twoPhase- | ||
| c1xx : fatal error C1903: не удается восстановить после предыдущих ошибок; остановка компиляции |
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| @@ -0,0 +1 @@ | ||
| �� |
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| @@ -0,0 +1,31 @@ | ||
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| @@ -0,0 +1,154 @@ | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| Source.cpp | ||
| c1xx : error C2338: двухэтапный поиск имен не поддерживается для C++/CLI, C++/CX или OpenMP. Используйте /Zc:twoPhase- | ||
| c1xx : fatal error C1903: не удается восстановить после предыдущих ошибок; остановка компиляции |
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| @@ -0,0 +1 @@ | ||
| �� |
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| @@ -0,0 +1,2 @@ | ||
| #TargetFrameworkVersion=v4.0:PlatformToolSet=v142:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit:WindowsTargetPlatformVersion=10.0 | ||
| Release|Win32|C:\App\CProjects\OpenMP\| |
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|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| #include <iostream> | ||
| #include <omp.h> | ||
| #include <ctime> | ||
| #include <random> | ||
|
|
||
| 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); | ||
| } | ||
|
|
||
| void Fox(double* A, double* B, double* C, int size, int procNum) { | ||
| int Grid = int(sqrt(procNum)); | ||
| int BlockSize = size / Grid; | ||
| omp_set_num_threads(procNum); | ||
| #pragma omp parallel | ||
| { | ||
| int numThreads = omp_get_thread_num(); | ||
| int RowIndex = numThreads / Grid; | ||
| int ColIndex = numThreads % Grid; | ||
| 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]; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } //pragma parallel | ||
| } | ||
|
|
||
| int main(int argc, char* argv[]) | ||
| { | ||
| double* A; | ||
| double* B; | ||
| double* CSeq; | ||
| double* CFox; | ||
|
|
||
| double StartFoxAlg = 0, FinFoxAlg = 0, StartSeqAlg = 0, FinSeqAlg = 0; //����� | ||
|
|
||
| int size = 16; //������ ������� | ||
| int procNum = 4; //���������� ��������� | ||
| int BlockSize = int(sqrt(procNum)); //������ ����� | ||
|
|
||
| if (BlockSize * BlockSize == procNum && size % BlockSize == 0) { | ||
|
|
||
|
|
||
| //������������� | ||
| A = new double[size * size]; | ||
| B = new double[size * size]; | ||
| CSeq = new double[size * size]; | ||
| CFox = new double[size * size]; | ||
|
There was a problem hiding this comment. Память из-под матриц нигде не освобождается. |
||
| MatrixCreate(A, B, CFox, CSeq,size); | ||
| // | ||
|
|
||
| //����� �� ����� | ||
| if (size < 30) { | ||
| cout << "Matrix A" << endl; | ||
| PrintMatrix(A, size); | ||
| cout << "Matrix B" << endl; | ||
| PrintMatrix(B, size); | ||
| } | ||
| // | ||
|
|
||
| //FoxAlgPar | ||
| if (procNum != 1) { | ||
| StartFoxAlg = omp_get_wtime(); //omp_get_wtime (); | ||
| Fox(A, B, CFox, size, procNum); | ||
| FinFoxAlg = omp_get_wtime(); | ||
| } | ||
| // | ||
|
|
||
| //FoxAlgSeq | ||
| StartSeqAlg = omp_get_wtime(); //omp_get_wtime (); | ||
| SequentialAlgorithm(A, B, CSeq, size); | ||
| FinSeqAlg = omp_get_wtime(); | ||
| // | ||
|
|
||
| //����� �� ����� | ||
| if (size < 30) { | ||
| cout << "Parallel Alg " << endl; | ||
| PrintMatrix(CFox, size); | ||
| } | ||
| if (size < 30) { | ||
| cout << "Seq Alg " << endl; | ||
| PrintMatrix(CSeq, size); | ||
| } | ||
|
There was a problem hiding this comment. Надо сделать автоматическое поэлементное сравнение результатов работы последовательного и параллельного алгоритмов, а не просто вывод результатов. |
||
| cout << "time of parallel alg is " << (FinFoxAlg - StartFoxAlg) << endl; | ||
| cout << "time of seq alg is " << (FinSeqAlg - StartSeqAlg) << endl; | ||
| // | ||
| } | ||
| else | ||
| { | ||
| cout << "Error" << endl; | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| d:\app\cprojects\openmp\x64\debug\vc142.pdb | ||
| d:\app\cprojects\openmp\x64\debug\vc142.idb | ||
| d:\app\cprojects\openmp\x64\debug\source.obj | ||
| d:\app\cprojects\openmp\x64\debug\openmp.exe | ||
| d:\app\cprojects\openmp\x64\debug\openmp.ilk | ||
| d:\app\cprojects\openmp\x64\debug\openmp.pdb | ||
| d:\app\cprojects\openmp\x64\debug\openmp.tlog\cl.command.1.tlog | ||
| d:\app\cprojects\openmp\x64\debug\openmp.tlog\cl.read.1.tlog | ||
| d:\app\cprojects\openmp\x64\debug\openmp.tlog\cl.write.1.tlog | ||
| d:\app\cprojects\openmp\x64\debug\openmp.tlog\link.command.1.tlog | ||
| d:\app\cprojects\openmp\x64\debug\openmp.tlog\link.read.1.tlog | ||
| d:\app\cprojects\openmp\x64\debug\openmp.tlog\link.write.1.tlog |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| Source.cpp | ||
| D:\App\CProjects\OpenMP\Source.cpp(61,11): warning C4244: инициализация: преобразование "double" в "int", возможна потеря данных | ||
| D:\App\CProjects\OpenMP\Source.cpp(96,16): warning C4244: инициализация: преобразование "double" в "int", возможна потеря данных | ||
| OpenMP.vcxproj -> D:\App\CProjects\OpenMP\x64\Debug\OpenMP.exe |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| PlatformToolSet=v142:VCToolArchitecture=Native32Bit:VCToolsVersion=14.25.28610:TargetPlatformVersion=10.0.18362.0: | ||
| Debug|x64|D:\App\CProjects\OpenMP\| |
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Странные входные данные для алгоритма Фокса. По смыслу в качестве аргументов командной строки должен использоваться размер матрицы (число строк=число столбцов) и размер блока. В предположении, что размер матрицы делится нацело на размер блока. Также в аргументах может задаваться количество потоков. В общем случае количество потоков не совпадает с общим числом блоков.
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Если я правильно понял, то все вышеперечисленное и включено в эти аргументы, где size - размер матрицы, procNum - количество потоков, и BlockSize - размер блока. Их можно менять и программа будет работать.
Или требуется сделать ввод со стороны пользователя именно при запуске программы уже?
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Надо реализовать передачу параметров через аргументы командной строки,чтобы не пересобирать программу перед запуском.