Compilador C++ Intel®

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.

  • Desenvolvedores
  • Servidor
  • Intermediário
  • Compilador C++ Intel®
  • Intel® AVX-512
  • Knights Landing
  • Intel SDE
  • Intel® IMCI
  • Arquitetura Intel® Many Integrated Core
  • Computação paralela
  • Vetorização
  • 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?

    Compiler error assertion failed at: "shared/cfe/edgcpfe/lower_init.c" on debian jessie


    I installed parallel_studio_xe_2015_update3 on my debian jessie on linux, and when i'm trying to compile the code I'm working on with icpc, there is this strange error :

    /usr/include/c++/4.9/sstream(564): internal error: assertion failed at: "shared/cfe/edgcpfe/lower_init.c", line 5243


    with no links to my code or anything else.

    What did I missed?

    kernel version 3.16.0-4-amd64


    g++ 4.9.2 also installed (no issues with this compiler)

    Explicit Template Instantiation Declaration doesn't avoid code generation.


    Here is a proof of concept :

    template <typename T>
    struct zoo
        T a;
        T foo() { return 2 * a; } // at least one function so zoo requires some code generation.
                                  // -> explicit decl are more likely to require an explicit def.
    extern template zoo<int>;
    int main()
        zoo<int> a;

    This single source file program compiles and links without error with "Intel C++ 15.0" on Windows, while in my understanding it would be looking for a missing explicit definition.

    Intel Compiler doesn't generate program database for release mode


    I have again a case where compiling my huge program with MSVC works just fine, with ICC -O2 it ends up with almost neverending compilation and linker problems and with -O1 it seems to generate incorrect code (it immediately crashes). So I want to check the code itself, but despite I specify I want a PDB, so that MSVC can understand the code, ICC doesn't report anything and just doesn't create the PDB... really frustrating... This is the command line:

    Assine o Compilador C++ Intel®