Top "Openmp" questions

OpenMP is a cross-platform multi-threading API which allows fine-grained task parallelization and synchronization using special compiler directives.

openMP is not creating threads in visual studio

My openMP version did not give any speed boost. I have a dual core machine and the CPU usage is …

openmp
Can I safely use OpenMP with C++11?

The OpenMP standard only considers C++ 98 (ISO/IEC 14882:1998). This means that there is no standard supporting usage of OpenMP under …

c++ c++11 openmp
multiple threads writing to std::cout or std::cerr

I have OpenMP threads that write to the console via cout and cerr. This of course is not safe, since …

c++ multithreading openmp valgrind
GCC does not honor 'pragma GCC diagnostic' to silence warnings

We recently enabled -Wall for a project. Its enabled when GCC is at 4.7 or above (or Clang) because we can …

c++ gcc openmp compiler-warnings pragma
OpenMP: Huge performance differences between Visual C++ 2008 and 2010

I'm running a camera acquisition program that performs processing on acquired images, and I'm using simple OpenMP directives for this …

c++ performance visual-studio-2010 openmp
How to make OpenMP work with MinGW-64 under Cygwin?

The Scenario I am developing an application in C99 ANSI C that uses OpenMP and GMP. It's natural habitat will …

cygwin 64-bit openmp gcc4 mingw-w64
How to tell if OpenMP is working?

I am trying to run LIBSVM in parallel mode, however my question is in OpenMP in general. According to LIBSVM …

c++ openmp libsvm
Terrible performance - a simple issue of overhead, or is there a program flaw?

I have here what I understand to be a relatively simple OpenMP construct. The issue is that the program runs …

parallel-processing openmp race-condition overhead
OpenMP - Nested for-loop becomes faster when having parallel before outer loop. Why?

I'm currently implementing an dynamic programming algorithm for solving knapsack problems. Therefore my code has two for-loops, an outer and …

c++ for-loop nested openmp knapsack-problem
OpenMP for MinGW w64?

Are there any OpenMP binaries out there for the MinGW-w64 GCC compiler (Windows)?

gcc mingw openmp mingw-w64