Changes between Version 4 and Version 5 of YMU110509/Lab2

Timestamp:

May 9, 2011, 12:04:11 PM (13 years ago)

Author:

jazz

Comment:

--

YMU110509/Lab2

@@ -12 +12 @@
  * GCC 4.2 以上版本就有支援 OpenMP 了....用 "gcc '''-fopenmp'''" 就可以編譯
 
-= OpenMP =
+= Example 1 : HelloWorld ==
+
+ * 首先從 [https://computing.llnl.gov/tutorials/openMP/exercise.html OpenMP Exercise] 下載 omp_hello.c
+{{{
+~$ wget https://computing.llnl.gov/tutorials/openMP/samples/C/omp_hello.c
+}}}
+ * 確認目前 gcc 版本，須大於 4.2 以後的版本
+{{{
+~$ gcc -v
+Using built-in specs.
+Target: x86_64-linux-gnu
+Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.5-8' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --with-arch-32=i586 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
+Thread model: posix
+gcc version 4.4.5 (Debian 4.4.5-8) 
+}}}
+ * 使用 GCC 編譯 omp_hello.c
+{{{
+~$ gcc -o omp_hello -fopenmp omp_hello.c
+}}}
+ * 執行 omp_hello 執行檔
+{{{
+~$ ./omp_hello 
+Hello World from thread = 2
+Hello World from thread = 3
+Hello World from thread = 0
+Number of threads = 4
+Hello World from thread = 1
+}}}
+
+= OpenMP 參考資料 =
 
  * 多核心平行化程式設計 Multi-Cores Programming