Visual Studio 2010，如何在多核上并行构建项目
我有一个包含 40 多个项目的大型解决方案。其中几乎一半是测试项目。 在我的项目中，我们使用代码契约、代码分析、风格分析。 我希望能够构建不依赖于我的四核 CPU 的并行项目。
如何设置 msbuild 来并行构建项目？
I have a big solution with more than 40 projects. Almost half of them are test projects.
In my project we use both Code Contracts, Code Analysis, Style Analysis.
I want to be able to build the projects that are not dependent in parallel on my quad core CPU.
How can I setup msbuild to build the projects in parallel?
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在 Visual Studio 中：工具 |选项|项目和解决方案|构建并运行。这应该默认为您的 CPU 计数。
从命令行：
msbuild /maxcpucount[:n]（如果未指定 n，则将使用 CPU 计数）。In Visual Studio: Tools | Options | Projects and Solutions | Build and Run. This should default to your CPU count.
From the command line:
msbuild /maxcpucount[:n](is n is not specified, then it will use the CPU count).您可以通过以下方式并行启动
MSBuild中的构建：将
MSBuild任务的属性BuildInParallel设置为true或者使用参数
调用msbuild /maxcpucount:X其中X指定构建中涉及的工作进程数。该解决方案更适合您的需求。Scott Hanselman 写了一篇文章，如果你想将这个过程集成到（有点） Visual Studio 作为外部工具。
多处理器构建：
对于 C++ 项目，您可以直接在 Visual Studio 中配置 选项|项目和解决方案|构建并运行
You could launch the build in
MSBuildin parallel by :Setting the attribute
BuildInParallelofMSBuildtask totrueOr calling msbuild with the parameter
/maxcpucount:XwhereXspecifies the number of worker processes that are involved in the build. This solution better suits your need.Scott Hanselman wrote a post on that, if you want to integrate (kinda) the process into Visual studio as an external tool.
For C++ projects you could configure multiprocessor build directly in Visual Studio :
Tools | Options | Projects and Solutions | Build and Run我知道有一个 nmake 的克隆支持 -j 开关并行编译：
http: //qt.gitorious.org/qt-labs/jom
还有一个针对 MSbuild 的 hack，只需谷歌一下即可。我还知道有一个工具支持在多台机器上构建，也许也支持在多核上构建，但我现在不记得它的名字了。
希望这有帮助。
I know that there is a clone of nmake that supports the -j switch to compile in parallel:
http://qt.gitorious.org/qt-labs/jom
and there is also a hack for MSbuild, just google it. I also know there is a tool that supports building on multiple machines and perhaps also on multiple cores, but I dont remember its name at the moment.
hope this helps.
那么您正在寻找的真正答案是将 /MP 编译器标志添加到 CXX 编译器标志中。
在 Visual Studio 下的项目属性页> C\C++ >常规多处理器编译只需键入 Yes (/MP)。现在它将在每个核心上并行构建所有 40 个项目
Then real answer you are looking for is to add the /MP compiler flag to the CXX compiler flags.
In Visual Studio Under the project property page> C\C++ >General Multi-processor compilation just type Yes (/MP). Now it will build all 40 projects in parallel on each of the cores
现在，它已内置于 Visual Studio 11 中，适用于所有语言，而不仅仅是 C++。
“Visual Studio 2010 包含一个“并行项目构建的最大数量”选项。虽然没有任何限制的迹象，但此 IDE 选项仅适用于 C++ 项目。幸运的是，此限制不再适用于 Visual Studio 11”，来自 www.visualstudiomagazine.com
This is now built in for Visual Studio 11 for all languages, not just C++.
"Visual Studio 2010 included an option for "maximum number of parallel project builds." Although there was no indication of any restriction, this IDE option only worked for C++ projects. Fortunately, this restriction no longer applies to Visual Studio 11" from www.visualstudiomagazine.com