哪個線程庫在linux上使用gcc來實現OpenMP？

Question

它使用pthread或其他線程API嗎？

Answer 1

是的，linux上的gcc使用pthreads。

Answer 2

一個OpenMP的運行時庫是巴爾德庫 其由OdinMP編譯靶向的 庫和編譯器完全支持的OpenMP 2.0 包括嵌套的並行性。 Balder圖書館有 模塊化設計，並有幾個子庫。一個 這樣子庫稱爲巴爾德線程的高效便攜式線程庫

Answer 3

這取決於你編譯什麼GCC與標準Linux實現來與POSIX線程的OpenMP，類型gcc -v在終端

這裏是輸出從我的筆記本電腦的興趣大膽

[n@N-pc-t61 ~]$ gcc -v 
Using built-in specs. 
COLLECT_GCC=/usr/bin/gcc 
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-redhat-linux/4.6.3/lto-wrapper 
Target: i686-redhat-linux 
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch=i686 --build=i686-redhat-linux 
**Thread model: posix** 

這裏的一部分是從GCC網站上所有可用的選項

--enable-threads=lib 
    Specify that lib is the thread support library. This affects the Objective-C compiler and runtime library, and exception handling for other languages like C++ and Java. The possibilities for lib are: 

    aix 
     AIX thread support. 
    dce 
     DCE thread support. 
    lynx 
     LynxOS thread support. 
    mipssde 
     MIPS SDE thread support. 
    no 
     This is an alias for `single'. 
    posix 
     Generic POSIX/Unix98 thread support. 
    rtems 
     RTEMS thread support. 
    single 
     Disable thread support, should work for all platforms. 
    tpf 
     TPF thread support. 
    vxworks 
     VxWorks thread support. 
    win32 
     Microsoft Win32 API thread support.