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Lab : OpenMP Programming

Lab : OpenMP Programming. Parallel Programming (CS5423) Instructor : 鍾葉青 Author : 吳宇宸. Note!. OpenMP 必須由編譯器本身支援，無法以套件方式使用。 使用 OpenMP 前，務必先確定你的編譯器有支援 OpenMP. Compilers and Platforms. IBM XL Fortran and C from IBM IBM AIX Systems Intel C++ and Fortran Compilers

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Lab : OpenMP Programming

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  1. Lab : OpenMP Programming Parallel Programming (CS5423) Instructor : 鍾葉青 Author : 吳宇宸

  2. Note! • OpenMP必須由編譯器本身支援，無法以套件方式使用。 • 使用OpenMP前，務必先確定你的編譯器有支援OpenMP

  3. Compilers and Platforms • IBM XL Fortran and C from IBM • IBM AIX Systems • Intel C++ and Fortran Compilers • Linux (IA32,EM64T, Itanium) • Windows 2K,XP (32bits,64bits) • MAC OS • Sun Microsystems • Sun Studio Compilers and Tools • Sun Studio 11 • OMPlab Presentation, IWOMP 2005 • Others… • GCC 4.2 (new!!)

  4. 開發模式 • 模式1 • 整合Microsoft Visual C++ (studio) .NET 2003 • 模式2 • 終端機指令模式

  5. 模式一 整合 MS VC++ • Step 1. 用一般方式建立自己所需的方案 • Step 2. 轉換成intel方案

  6. 模式一 整合 MS VC++ • Step3. 設定專案屬性

  7. 模式一 整合 MS VC++ • Step4. 調整屬性 “ C/C++ -> Language -> Process OpenMP Directives

  8. 模式一 整合 MS VC++ • Step 5. 執行編譯 • Demo

  9. 不該有錯誤訊息！ 模式二 終端機指令模式 • Step1 . 開始 > 所有程式 > Intel(R) Software Development Tools > Intel(R) C++ Compiler 9.1 > Build Environment for C++ EM64T-based applications

  10. 模式二 終端機指令模式 • Step2 • Intel C++ compiler的執行指令為 icl，可輸入”icl /help” 來查閱完整資訊 • 若有使用OpenMP • X:\yourdir\>icl /Qopenmp yourfile.c • Demo

  11. Intel C++ compiler 其他常用參數 • Optimize • /O0 : disable • /O : same as /O2 • /O1 : Optimize to favor code size and code locality. Disables loop unrolling. • /O2 : default • /O3 : enable high-level optimization • Others • /S compile to assembly file • /I<dir> add directory to include file search path • Other…(try “icl /?” !)

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