OpenMP*

New code release

We are excited to announce the next release of the Intel® OpenMP* Runtime Library at openmprtl.org. This release aligns with Intel® Parallel Studio XE 2015 Composer Edition Update 4.

New Features

  • Debugger support interface added to the OSS library

Bug Fixes

  • Fixed implementation of task 'final' clause
  • Fixed a crash that occurred when task dependence was used
  • Fixed hierarchical barrier in oversubscription case

Contributions

Runtime Design Documentation

Hello,

I am starting to dig into the runtime source code and I am wondering if there is any information available about its general organization/design. I am mostly interested in the "task"-related topics, for instance how are inter-task dependencies detected, which scheduling algorithms are implemented, and such things.

Thanks in advance.

how to enable multiple cores for openMP

Hi,

          I'm recently learning to use openMP, it can schedule multiple threads for processing speeding up. My host PC has 4 cores, each core has 4 hardware threads. Does openMP also support scheduling  multiple cores for processing?

          As a simple example, I have below code with omp enabled.

    int i;
    printf("openMP begins!\n");
    
    #pragma omp parallel num_threads(4)
    for (i = 0; i < 5; i++)
    {
        printf("Iter:%d\n", i);
    }
          
    printf("openMP ends!\n");

Videos - Parallel Programming with Intel Xeon Phi Coprocessors

Here is a list of recently published videos from Colfax International on Intel(R) Xeon Phi(TM) Coprocessors.

In this video we will discuss software tools needed and recommended for developing applications for Intel Xeon Phi coprocessors. We will begin with software that is necessary to boot coprocessors and to run pre-compiled executables on them.

Videos - Parallel Programming and Optimization with Intel Xeon Phi Coprocessors

Here is a set of introductory videos from Colfax International on Parallel Programming and Optimization with Intel(R) Xeon Phi(TM) Coprocessors.

In this video episode we will introduce Intel Xeon Phi coprocessors based on the Intel Many Integrated Core, or MIC, architecture and will cover some of the specifics of hardware implementation.

Parallel Image Processing in OpenMP - Image Blocks

Hello,
I'm doing my first steps in the OpenMP world.

I have an image I want to apply a filter on.
Since the image is large I wanted to break it into non overlapping parts and apply the filter on each independently in parallel.
Namely, I'm creating 4 images I want to have different threads.

I'm using Intel IPP for the handling of the images and the function to apply on each sub image.

I described the code here:

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