add a excercise about parallel programming
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 15
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VisualStudioVersion = 15.0.27703.2042
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "2018-09-15_parallel_programming", "2018-09-15_parallel_programming\2018-09-15_parallel_programming.csproj", "{C026DB21-31F8-46BC-B59A-85FC5E1A2242}"
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{C026DB21-31F8-46BC-B59A-85FC5E1A2242}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{C026DB21-31F8-46BC-B59A-85FC5E1A2242}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{C026DB21-31F8-46BC-B59A-85FC5E1A2242}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{C026DB21-31F8-46BC-B59A-85FC5E1A2242}.Release|Any CPU.Build.0 = Release|Any CPU
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HideSolutionNode = FALSE
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {E6A60DFF-828A-4F59-96E9-46C92571FB10}
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EndGlobalSection
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EndGlobal
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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{C026DB21-31F8-46BC-B59A-85FC5E1A2242}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<RootNamespace>_2018_09_15_parallel_programming</RootNamespace>
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<AssemblyName>2018-09-15_parallel_programming</AssemblyName>
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<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Net.Http" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="App.config" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>
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<?xml version="1.0" encoding="utf-8" ?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
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</startup>
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</configuration>
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace _2018_09_15_parallel_programming
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{
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class Program
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{
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static void Main(string[] args)
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{
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var watch = System.Diagnostics.Stopwatch.StartNew();
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Console.WriteLine("Serial Start");
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SerialTest();
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watch.Stop();
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var serialelapsedMs = watch.ElapsedMilliseconds;
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var serialelapsedTicks = watch.ElapsedTicks;
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Console.WriteLine("Serial Stop");
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Console.WriteLine("Elapse Time: " + serialelapsedMs.ToString());
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Console.WriteLine("Elapsed Ticks: " + serialelapsedTicks.ToString());
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watch.Reset();
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Console.WriteLine("");
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Console.WriteLine("");
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Console.WriteLine("");
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Console.WriteLine("Parallel Start");
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watch.Start();
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ParallelTest();
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watch.Stop();
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var elapsedMs = watch.ElapsedMilliseconds;
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var elapsedTicks = watch.ElapsedTicks;
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Console.WriteLine("Parallel Stop");
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Console.WriteLine("Elapsed miliseconds: " + elapsedMs.ToString());
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Console.WriteLine("Elapsed Ticks: " + elapsedTicks.ToString());
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var factor = serialelapsedMs / elapsedMs;
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Console.WriteLine("Parallel is " + factor.ToString() + " times faster.");
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Console.ReadKey();
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}
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static void SerialTest()
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{
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double[] arr = new double[50000000];
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for (int i = 0; i < 50000000; i++)
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{
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arr[i] = Math.Pow(i, 0.333) * Math.Sqrt(Math.Sin(i));
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}
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}
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static void ParallelTest()
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{
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double[] arr = new double[50000000];
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Parallel.For(0, 50000000, i =>
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{
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arr[i] = Math.Pow(i, 0.333) * Math.Sqrt(Math.Sin(i));
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});
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}
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}
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}
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("2018-09-15_parallel_programming")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("2018-09-15_parallel_programming")]
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[assembly: AssemblyCopyright("Copyright © 2018")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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// The following GUID is for the ID of the typelib if this project is exposed to COM
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[assembly: Guid("c026db21-31f8-46bc-b59a-85fc5e1a2242")]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//
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// You can specify all the values or you can default the Build and Revision Numbers
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// by using the '*' as shown below:
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// [assembly: AssemblyVersion("1.0.*")]
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]
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