ME964CMake & CUDA DebuggingSpring 2011Brian J. DavisM.S. / PhD. Candidate Biomedical EngineeringResearch AssistantSchool of Medicine and Public HealthResearch Area Medical [email protected]© Dan Negrut, 2011ME964 UW-Madison© Brian J. Davis 2011CMake Build tools – What do they do? What is CMake?  Why use CMake? What can CMake do? Example Project Don’t listen to me go to the source… hey man I am just spreading the word. Google Tech Talk CMake/CPack/CTest/CDash Open Source Tools to Build Test and Deploy C++ Software  http://www.youtube.com/watch?v=8Ut9o4OdSC0&feature=youtube_gdata I am not affiliated in any way with Kitware. Just a poor schlep trying to get his code to compile.22The Source CMake by Kitware http://www.CMake.org/ Documentation http://www.cmake.org/cmake/help/documentation.html http://www.cmake.org/cmake/help/cmake-2-8-docs.html FAQ http://www.CMake.org/Wiki/CMake_FAQ Download http://www.CMake.org/CMake/resources/software.html Source Repository http://www.CMake.org/Wiki/CMake/Git Tutorial http://www.CMake.org/CMake/help/CMake_tutorial.html“Go right to the source and ask the horse. He’ll give you the answer that you’ll endorse. He’s always on a steady course. Talk to Mr. Ed” – Theme song to Mr. Ed, 1961-19663Build tools what do they do? Check dependencies You changed a source file and the .obj file needs to be rebuilt which then rebuilds the dll or exe. Controls what gets built in what order Execute generators  Such as the compiler which coverts source to output files Generate configuration files Specify install and testing locations and put all files in correct locations. Generate code Lexx Yacc or Flex and Bison  Extended Backus–Naur Form (EBNF) – context -free grammars SWIG C/C++/C# (Mono) Language integration in Linux Check system for build dependencies (some do VS not so much) CUDA, nvcc,  Library dependencies (VTK, ITK, etc) What are capabilities/versions of C and C++ stdlib etc. Whatever you command them to doMESSAGE( “Executing world domination script now” )execute_process( COMMAND world_domination.batWORKING_DIRECTORY ./world_domination_scripts/milky_way_galaxy/earthINPUT_FILE world_domination.cfgOUTPUT_FILE world_domination_result.logERROR_FILE world_domination_error.log)4Build Tools What have I used? What comparisons can I make? BorlandBuilder 5.02/Builder C++ 4, and 6 MS VisualStudio GNU Make, autoconf, and friends BJam – BoostBuildV2 part of Boost C++ http://www.boost.org/boost-build2/ Perforce Software (not related to Boost) Jam Tutorial – only put here due to use of Jam http://www.perforce.com/perforce/conferences/us/2001/wingerd/WPLaura.pdf I have not used the Perforce version only Boost’s version CMake5Visual Studio as a build tool>>> MY OPINIONS <<< Based on What? – ~10 years experience Great for simple projects Unwieldy for complex projects Modal Dialog boxes that can’t be resized? Build Spec is not searchable Which spec am I changing? all, debug, release? Is this for 32 or x64? What did I change that made the build break? I know I can diff the .sln and .prjfiles. We will take a look at those (next slide) All seems hidden behind GUI which is difficult access, change, and maintain . Especially with broad sweeping changes. Ok there is project inheritance. Is this the best Microsoft can do? Well no they do have nmake. Of course laying out a path to (project) destruction is no help either. Wizards are no Merlin. Good for wear leveling of your mouse buttons through increased use of right clickRegistry Key use sadens me. The very concept (the registry) is an attack on my sensibilities. I must now cleanse my thoughts with a couple of pages of Linux kernel code and thoughts of apple pie :-) - Brian J. Davis – CMake Forums : CUDA, CMake, and an attempt to build nbody, 2010 6Looking at (diffing) VS project files WHEN things go wrong: .slnMicrosoft Visual Studio Solution File, Format Version 10.00# Visual Studio 2008Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "CudaCollision", "CudaCollision\CudaCollision.vcproj", "{08C6F311-7AA6-46EB-BFB9-7F947F5DD014}"EndProjectProject("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "BulletValidation", "BulletValidation\BulletValidation.vcproj", "{8644F016-E5EF-432D-98C6-91D27D459746}"EndProjectProject("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "DataGeneration", "DataGeneration\DataGeneration.vcproj", "{A0B424D7-6CCD-465C-A90E-D5589E73954E}"EndProjectGlobalGlobalSection(SolutionConfigurationPlatforms) = preSolutionDebug|Win32 = Debug|Win32Debug|x64 = Debug|x64Release|Win32 = Release|Win32Release|x64 = Release|x64EndGlobalSectionGlobalSection(ProjectConfigurationPlatforms) = postSolution{08C6F311-7AA6-46EB-BFB9-7F947F5DD014}.Debug|Win32.ActiveCfg = Debug|Win32{08C6F311-7AA6-46EB-BFB9-7F947F5DD014}.Debug|Win32.Build.0 = Debug|Win32{08C6F311-7AA6-46EB-BFB9-7F947F5DD014}.Debug|x64.ActiveCfg = Debug|x64{08C6F311-7AA6-46EB-BFB9-7F947F5DD014}.Debug|x64.Build.0 = Debug|x64{08C6F311-7AA6-46EB-BFB9-7F947F5DD014}.Release|Win32.ActiveCfg = Release|Win32… ……{A0B424D7-6CCD-465C-A90E-D5589E73954E}.Release|Win32.Build.0 = Release|Win32{A0B424D7-6CCD-465C-A90E-D5589E73954E}.Release|x64.ActiveCfg = Release|x64{A0B424D7-6CCD-465C-A90E-D5589E73954E}.Release|x64.Build.0 = Release|x64EndGlobalSectionGlobalSection(SolutionProperties) = preSolutionHideSolutionNode = FALSEEndGlobalSectionEndGlobal7<?xml version="1.0" encoding="Windows-1252"?><VisualStudioProjectProjectType="Visual C++"Version="9.00"Name="CudaCollision"ProjectGUID="{08C6F311-7AA6-46EB-BFB9-7F947F5DD014}"RootNamespace="CudaCollision"Keyword="x64Proj"TargetFrameworkVersion="0"><Platforms><PlatformName="x64"/><PlatformName="Win32"/></Platforms><ToolFiles><DefaultToolFileFileName="NvCudaRuntimeApi.v3.2.rules"/>…… Blah Blah Blah GOBS and GOBS more where this came from…<FileRelativePath=".\cuda_timer.cu"></File></Files><Globals></Globals></VisualStudioProject>Looking at (diffing) VS project files WHEN things go wrong: .sln8What does VS do? Ok well .prj is better than .sln not that I don’t like looking at hash codes or anything. I counted 698 lines (ok well SciTEhttp://www.scintilla.org/SciTE.html line numbering did) of good wholesome xml Seriously 698 lines of xml to specify 1 executable (CollisionDetection) to generate a