Intel® C++ Compiler

Free webinar April 7 2015 9am PST "Further Vectorization Features of the Intel Compiler"

There is a free webinar “Further Vectorization Features of the Intel Compiler” coming next Tuesday talking specifically about getting more vectorizations from Intel Compilers. But you would benefit it more if you've watched/listened to the previous webinar Performance essentials using OpenMP* 4.0 vectorization with C/C++.

Intel® Xeon Phi™ Coprocessor code named “Knights Landing” - Application Readiness

As part of the application readiness efforts for future Intel® Xeon® processors and Intel® Xeon Phi™ coprocessors (code named Knights Landing), developers are interested in improving two key aspects of their workloads:

  1. Vectorization/code generation
  2. Thread parallelism

This article mainly talks about vectorization/code generation and lists some helpful tools and resources for thread parallelism.

  • Desarrolladores
  • Servidor
  • Intermedio
  • Intel® C++ Compiler
  • Intel® AVX-512
  • Knights Landing
  • Intel SDE
  • Intel® IMCI
  • Arquitectura Intel® para muchos núcleos integrados
  • Computación en paralelo
  • Vectorización
  • Оптимизировали, оптимизировали, да не выоптимизировали!

    Оптимизация? Конечно, каждый сталкивался с данной задачей при разработке своих, сколь-нибудь значительных, требующих определённых вычислений, приложений. При этом способов оптимизировать код существует огромное множество, и, как следствие, различных путей сделать это в автоматическом режиме с помощью опций компилятора. Вот здесь и возникает проблема – как выбрать то, что нужно нам и не запутаться?

    Windows 10 + Visual Studio 2015,2013 + Intel 2016 upd 2 (beta) => slow compilation


    I just "upgraded" my Windows 8.1 Pro computer to Windows 10 Pro (x64) and immediately noticed a very significant slow-down of compilation (computer: 2x Xeon X5690 3.47GHz, 24 GB RAM, NVidia GTX 580, Intel SSD 540 Series).

    It can be seen in both Visual Studio 2013 Pro and Visual Studio 2015 Community IDEs.

    I have Beta version of Intel 2016 (update 2) compiler installed.

    Before the upgrade in Windows 8.1 Pro (x64) everything worked just fine.

    Windows: identifier "not" is undefined, crash


    Just installed the latest Composer edition on windows to test it out. Have VS 2012 Pro, but installed 2015 Community for the new headers (can't intel supply their own headers? sheesh). getting some bizarra behavoir, like:

    ... error : identifier "not" is undefined

    1>                if (not dataArray.isStorageContiguous()) {

    Seriously?And several times, I get:

    1>": : error : ** The compiler has encountered an unexpected problem.

    1>  ** Segmentation violation signal raised. **

    Visual C++ 2015 breaks Intel C++ 15

    After installing Visual C++ 2015 my Intel C++ 15 compiles started failing. It looks like Intel C++ is automatically picking up (incompatible) headers from the latest Visual C++.

    Is there a way to force Intel C++ to use specific Visual C++ headers?

    Do we have assurances that Intel C++ 2016 will be compatible with Visual C++ 2015?



    c:\>icl demo.cpp


    LNK2019: error cannot resolve the external symbol ___intel_new_feature_proc_init,


    Only "icl /Od demo.cpp" is OK,that is option /O1 and /O2 and /O3 are compiled incorrectly; What happend to it?Why all options of cl compiler are correct?

    My computer's intel processor:

    The third generation of Intel core i5-3210M processor core @ 2.50GHz

    Step E1

    Speed 2.50 GHz (100 x MHz 25)

    Number of processors core number: 2 / thread number: 4

    Core code Bridge Ivy

    Pointer checker feature - Buffer overrun not detected on aligned heap


    I am using the pointer checker feature as documented (including chkp.h and compiling with flag /Qcheck-pointers:rw, also refer to in a C++ application on Win 8.1.
    The pointer checker works perfectly fine and reports a buffer overrun if I use stack memory or unaligned heap memory (using malloc).
    The pointer checker however does not report any overrun if I use aligned heap memory (using mkl_malloc or _aligned_malloc)

    Sample code:

    Infinite loop - bug?


    the do-while loop in the following code segment won't terminate in release mode.

    (Windows 7, Visual Studio 2013, ICL version Build 20150407)

    unsigned short arr[256];
    signed char index = SCHAR_MIN;
    do {
    	arr[(unsigned char)index] = (unsigned short)index;
    } while(index++ < SCHAR_MAX);

    Compiled in release mode with:

    Suscribirse a Intel® C++ Compiler