New code release

We are excited to announce the next release of the Intel® OpenMP* Runtime Library at 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


Runtime Design Documentation


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


          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.

视频 - 借助英特尔至强融核协处理器实现并行编程

Colfax International 最近发布了下列一组关于英特尔(R) 至强融核(TM) 协处理器的视频。

该视频主要介绍了开发面向英特尔至强融核协处理器的应用时所需要并推荐采用的软件工具。 我们首先介绍启动协处理器以及运行预编译的可执行文件所需的软件。

我的应用是否能受益于 MIC 架构
在本视频中,我们将探讨可在英特尔至强融核协处理器上有效运行的应用类型。 我希望上述介绍能够帮助大家回答“我的应用是否能受益于 MIC 架构?”

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.

视频 - 借助英特尔至强融核协处理器实现并行编程和优化

下面是 Colfax International 发布的一组关于借助英特尔(R) 至强融核(TM) 协处理器实现并行编程和优化的视频。

第 2.1 集 MIC 架构的用途
在本段视频中,我们将介绍基于英特尔集成众核(或 MIC)架构的英特尔至强融核协处理器,以及硬件实施的几点特性。

第 2.2 集 英特尔 MIC 架构详情
本视频将详细介绍英特尔 MIC 架构的一般属性,然后重点介绍矢量指令支持。

第 2.3 集- 英特尔架构对矢量指令的支持

Parallel Image Processing in OpenMP - Image Blocks

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:

Subscribe to OpenMP*