tasks/ostrovskaya-sf/lab_5/.gitignore

@@ -0,0 +1,484 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from `dotnet new gitignore`
+
+# dotenv files
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+# Microsoft Fakes
+FakesAssemblies/
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+# GhostDoc plugin setting file
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+# VS Code files for those working on multiple tools
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+##
+## Visual studio for Mac
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+
+# globs
+Makefile.in
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+# Mac bundle stuff
+*.dmg
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+# content below from: https://github.com/github/gitignore/blob/master/Global/macOS.gitignore
+# General
+.DS_Store
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+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
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+
+# Directories potentially created on remote AFP share
+.AppleDB
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+
+# content below from: https://github.com/github/gitignore/blob/master/Global/Windows.gitignore
+# Windows thumbnail cache files
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+# Recycle Bin used on file shares
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+# Windows Installer files
+*.cab
+*.msi
+*.msix
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+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# Vim temporary swap files
+*.swp

tasks/ostrovskaya-sf/lab_5/README.md

@@ -0,0 +1,73 @@
+# Отчет по лабораторной работе №5
+
+Выполнила студентка гр. ИСЭбд-41 Островская С.Ф.
+
+## Создание приложения
+
+Было выбрано консольное приложение, язык программирования - c#.
+
+Обычный алгоритм:
+
+```cs
+static int[][] MultiplyMatrix(int[][] matrix1, int[][] matrix2)
+{
+    int rows = matrix1.Length;
+    int columns = matrix2[0].Length;
+    int[][] result = new int[rows][];
+    for (int i = 0; i < rows; i++)
+    {
+        result[i] = new int[columns];
+        for (int j = 0; j < columns; j++)
+        {
+            result[i][j] = 0;
+            for (int k = 0; k < matrix1[i].Length; k++)
+            {
+                result[i][j] += matrix1[i][k] * matrix2[k][j];
+            }
+        }
+    }
+    return result;
+}
+```
+Параллельный алгоритм:
+
+```cs
+static int[][] MultiplyMatrixParallel(int[][] matrix1, int[][] matrix2, int numThreads)
+{
+    int rows = matrix1.Length;
+    int columns = matrix2[0].Length;
+    int[][] result = new int[rows][];
+
+
+    Parallel.For(0, rows, new ParallelOptions { MaxDegreeOfParallelism = numThreads }, i =>
+    {
+        result[i] = new int[columns];
+        for (int j = 0; j < columns; j++)
+        {
+            result[i][j] = 0;
+            Parallel.For(0, matrix1[i].Length, k =>
+            {
+                result[i][j] += matrix1[i][k] * matrix2[k][j];
+            });
+        }
+    });
+    return result;
+}
+```
+
+![](pic/pic1.jpg)
+![](pic/pic2.jpg)
+
+В результате обычный алгоритм выполнился за ``0,0002112`` секунды, а паралелльный за ``0,0064956`` секунды.
+
+## Бенчмарки
+
+Протестируем обычный и параллельный алгоритмы на матрицах различных размеров: 100х100, 300х300 и 500х500.
+
+Количество потоков: ``4``
+![](pic/pic3.jpg)
+
+Количество потоков: ``12``
+![](pic/pic4.jpg)
+
+``Вывод``: Обыный алгоритм работает быстрее, если количество элементов не слишком много. Параллельный же алгоритм работает быстрее только при наличии большого количества операций и данных. Оптимальное количество потоков для эффективной работы - 12.

tasks/ostrovskaya-sf/lab_5/lab_5_matrix/lab_5_matrix.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34330.188
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "lab_5_matrix", "lab_5_matrix\lab_5_matrix.csproj", "{A71D963B-1625-458C-A90F-5DB95C03B17C}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A71D963B-1625-458C-A90F-5DB95C03B17C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A71D963B-1625-458C-A90F-5DB95C03B17C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A71D963B-1625-458C-A90F-5DB95C03B17C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A71D963B-1625-458C-A90F-5DB95C03B17C}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {1A186ABB-2B32-4398-9A58-04ED799B0B80}
+	EndGlobalSection
+EndGlobal

tasks/ostrovskaya-sf/lab_5/lab_5_matrix/lab_5_matrix/Program.cs

@@ -0,0 +1,192 @@
+using System;
+using System.Threading.Tasks;
+using System.Diagnostics;
+
+class Program
+{
+    static void Main()
+    {
+        Console.WriteLine("Задания: \n1. проверка умножения матриц;\n2. бэнчмарки;");
+        Console.Write("Введите номер задания: ");
+        int numTask = int.Parse(Console.ReadLine());
+        if (numTask == 1)
+        {
+            int[][] matrix1 = GenerateMatrix(10);
+            int[][] matrix2 = GenerateMatrix(10);
+            
+            Console.WriteLine();
+            PrintMatrix(matrix1); // Вывод результата
+            Console.WriteLine();
+            PrintMatrix(matrix2); // Вывод результата
+
+            // Вводим количество потоков вручную
+            Console.WriteLine();
+            Console.Write("Введите количество потоков: ");
+            int numThreads = int.Parse(Console.ReadLine());
+            Console.WriteLine();
+
+            Stopwatch sw1 = new Stopwatch();
+            sw1.Start();
+            int[][] resultSequential = MultiplyMatrix(matrix1, matrix2); // Вызов обычного алгоритма
+            sw1.Stop();
+
+            Stopwatch sw2 = new Stopwatch();
+            sw2.Start();
+            int[][] resultParallel = MultiplyMatrixParallel(matrix1, matrix2, numThreads); // Вызов параллельного алгоритма
+            sw2.Stop();
+
+            Console.WriteLine("Выполнение обычного алгоритма");
+            PrintMatrix(resultSequential); // Вывод результата
+            TimeSpan elapsedTime1 = sw1.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime1.TotalSeconds:F7} с");
+
+            Console.WriteLine("\nВыполнение параллельного алгоритма");
+            PrintMatrix(resultParallel); // Вывод результата
+            TimeSpan elapsedTime2 = sw2.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime2.TotalSeconds:F7} с");
+
+            Console.ReadLine();
+        }
+        else if (numTask == 2)
+        {
+            int[][] matrix1 = GenerateMatrix(100);
+            int[][] matrix2 = GenerateMatrix(100);
+
+            Console.Write("Введите количество потоков: ");
+            int numThreads = int.Parse(Console.ReadLine());
+            Console.WriteLine();
+
+            Console.WriteLine("Размер матрицы: 100x100");
+
+            Console.WriteLine("\nПоследовательный алгоритм:");
+            Stopwatch sw1 = new Stopwatch();
+            sw1.Start();
+            int[][] resultSequential = MultiplyMatrix(matrix1, matrix2);
+            sw1.Stop();
+            TimeSpan elapsedTime1 = sw1.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime1.TotalSeconds:F7} мс");
+
+            Console.WriteLine("\nПараллельный алгоритм:");
+            Stopwatch sw2 = new Stopwatch();
+            sw2.Start();
+            int[][] resultParallel = MultiplyMatrixParallel(matrix1, matrix2, numThreads);
+            sw2.Stop();
+            TimeSpan elapsedTime2 = sw2.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime2.TotalSeconds:F7} с");
+
+            Console.WriteLine("\n------------------------------------------\n");
+
+            matrix1 = GenerateMatrix(300);
+            matrix2 = GenerateMatrix(300);
+
+            Console.WriteLine("Размер матрицы: 300x300");
+
+            Console.WriteLine("\nПоследовательный алгоритм:");
+            sw1.Restart();
+            resultSequential = MultiplyMatrix(matrix1, matrix2);
+            sw1.Stop();
+            elapsedTime1 = sw1.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime1.TotalSeconds:F7} мс");
+
+            Console.WriteLine("\nПараллельный алгоритм:");
+            sw2.Restart();
+            resultParallel = MultiplyMatrixParallel(matrix1, matrix2, numThreads);
+            sw2.Stop();
+            elapsedTime2 = sw2.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime2.TotalSeconds:F7} с");
+
+            Console.WriteLine("\n------------------------------------------\n");
+
+            matrix1 = GenerateMatrix(500);
+            matrix2 = GenerateMatrix(500);
+
+            Console.WriteLine("Размер матрицы: 500x500");
+
+            Console.WriteLine("\nПоследовательный алгоритм:");
+            sw1.Restart();
+            resultSequential = MultiplyMatrix(matrix1, matrix2);
+            sw1.Stop();
+            elapsedTime1 = sw1.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime1.TotalSeconds:F7} мс");
+
+            Console.WriteLine("\nПараллельный алгоритм:");
+            sw2.Restart();
+            resultParallel = MultiplyMatrixParallel(matrix1, matrix2, numThreads);
+            sw2.Stop();
+            elapsedTime2 = sw2.Elapsed;
+            Console.WriteLine($"Время выполнения: {elapsedTime2.TotalSeconds:F7} с");
+
+            Console.ReadLine();
+
+        }
+    }
+
+    static int[][] GenerateMatrix(int size)
+    {
+        Random random = new Random();
+        int[][] matrix = new int[size][];
+        for (int i = 0; i < size; i++)
+        {
+            matrix[i] = new int[size];
+            for (int j = 0; j < size; j++)
+            {
+                matrix[i][j] = random.Next(1, 100);
+            }
+        }
+        return matrix;
+    }
+
+    static int[][] MultiplyMatrix(int[][] matrix1, int[][] matrix2)
+    {
+        int rows = matrix1.Length;
+        int columns = matrix2[0].Length;
+        int[][] result = new int[rows][];
+        for (int i = 0; i < rows; i++)
+        {
+            result[i] = new int[columns];
+            for (int j = 0; j < columns; j++)
+            {
+                result[i][j] = 0;
+                for (int k = 0; k < matrix1[i].Length; k++)
+                {
+                    result[i][j] += matrix1[i][k] * matrix2[k][j];
+                }
+            }
+        }
+        return result;
+    }
+
+    static int[][] MultiplyMatrixParallel(int[][] matrix1, int[][] matrix2, int numThreads)
+    {
+        int rows = matrix1.Length;
+        int columns = matrix2[0].Length;
+        int[][] result = new int[rows][];
+
+
+        Parallel.For(0, rows, new ParallelOptions { MaxDegreeOfParallelism = numThreads }, i =>
+        {
+            result[i] = new int[columns];
+            for (int j = 0; j < columns; j++)
+            {
+                result[i][j] = 0;
+                Parallel.For(0, matrix1[i].Length, k =>
+                {
+                    result[i][j] += matrix1[i][k] * matrix2[k][j];
+                });
+            }
+        });
+        return result;
+    }
+
+    static void PrintMatrix(int[][] matrix)
+    {
+        for (int i = 0; i < matrix.Length; i++)
+        {
+            for (int j = 0; j < matrix[i].Length; j++)
+            {
+                Console.Write(matrix[i][j] + " ");
+            }
+            Console.WriteLine();
+        }
+    }
+}

tasks/ostrovskaya-sf/lab_5/lab_5_matrix/lab_5_matrix/lab_5_matrix.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

tasks/ostrovskaya-sf/lab_5/lab_5_matrix/lab_5_matrix/obj/lab_5_matrix.csproj.nuget.dgspec.json

@@ -0,0 +1,67 @@
+{
+  "format": 1,
+  "restore": {
+    "D:\\Study\\4kurs\\РВИП\\distributed-computing\\tasks\\ostrovskaya-sf\\lab_5\\lab_5_matrix\\lab_5_matrix\\lab_5_matrix.csproj": {}
+  },
+  "projects": {
+    "D:\\Study\\4kurs\\РВИП\\distributed-computing\\tasks\\ostrovskaya-sf\\lab_5\\lab_5_matrix\\lab_5_matrix\\lab_5_matrix.csproj": {
+      "version": "1.0.0",
+      "restore": {
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+        "fallbackFolders": [
+          "C:\\Program Files (x86)\\Microsoft Visual Studio\\Shared\\NuGetPackages"
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+          "C:\\Users\\oostr\\AppData\\Roaming\\NuGet\\NuGet.Config",
+          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.FallbackLocation.config",
+          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
+        ],
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+}

tasks/ostrovskaya-sf/lab_5/lab_5_matrix/lab_5_matrix/obj/lab_5_matrix.csproj.nuget.g.props

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+    <RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
+    <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
+    <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
+    <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">$(UserProfile)\.nuget\packages\</NuGetPackageRoot>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">C:\Users\oostr\.nuget\packages\;C:\Program Files (x86)\Microsoft Visual Studio\Shared\NuGetPackages</NuGetPackageFolders>
+    <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
+    <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.8.0</NuGetToolVersion>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <SourceRoot Include="C:\Users\oostr\.nuget\packages\" />
+    <SourceRoot Include="C:\Program Files (x86)\Microsoft Visual Studio\Shared\NuGetPackages\" />
+  </ItemGroup>
+</Project>

tasks/ostrovskaya-sf/lab_5/lab_5_matrix/lab_5_matrix/obj/lab_5_matrix.csproj.nuget.g.targets

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" />

tasks/ostrovskaya-sf/lab_5/lab_5_matrix/lab_5_matrix/obj/project.assets.json

@@ -0,0 +1,73 @@
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+        "imports": [
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+          "net462",
+          "net47",
+          "net471",
+          "net472",
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+        "warn": true,
+        "frameworkReferences": {
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+}