OpenMP*

Team invalidation between consecutive parallel constructs

We are doing some experiments with the EPCC parallel benchmark on an Intel Xeon Phi coprocessor 7120 with 244 threads, compact affinity, hierarchical barrier, KMP_LIBRARY=turnaround, KMP_BLOCKTIME=infinit.

Using VTune, I see that most of the non-waiting time is consumed in the __kmp_hierarchical_barrier_release which makes sense to me. However, inside this function, most of the time is spent in:

No Cost Options for Intel Integrated Performance Primitives Library (IPP), Support Yourself, Royalty-Free

Intel® IPP is an extensive library which includes thousands of optimized functions covering frequently used fundamental algorithms including those for creating digital media, enterprise data, embedded, communications, and scientific/technical applications. Intel IPP includes routines for Image Processing, Computer Vision, Data Compression, Signal Processing and (with an optional add-on) Cryptography. Intel IPP is available for Linux*, OS X* and Windows*.

OpenMP 4.0 target offload Report

Hi ..

I am trying to make a comparison statistics of offload using,

1). Intel compiler assisted offload VS. 2). OPENMP 4.0 target construct 

My QUESTION: HOW I CAN GET OPENMP 4.0 OFFLOAD REPORT(which environment variable I need to set..?), I used OFFLOAD Report=2; intel compiler directive offload it worked fine, BUT I AM GETTING VERY STRANGE STATISTICS WITH OPENMP 4.0 OFFLOAD (I am using Intel Xeon Phi as execution platform)

Here is the code

COMPILER DIRECTIVE OFFLOAD:

// Start time
        gettimeofday(&start, NULL);

run-time error

Hello everyone,

 

 

I am new to this community and, first of all, I would like to thank everyone for the help in advance.

I use intel fortran for my programs, which have always been coded using a sequential approach. Now I am trying to parallelize a few do loops but I have a run-time problem when I try to run a program with the openmp directives. The thing is that this the first time for me to try to implement using openmp, and I would like to apologize if my questions are stupid.

OpenMPI stoped working

Hallo!

I have the Intel Parallel Studio XE Composer installed and additionally I build OpenMPI with the intel compiler (based on: https://software.intel.com/en-us/articles/performance-tools-for-software-developers-building-open-mpi-with-the-intel-compilers). I aolso sourced all path which I need to get it working on linux. It worked perfectly till frieday but today it just stopped working and i got this error message:

N-Body Simulation Project at Cal Poly

The goal of the N-Body problem is to predict the motion of a set of n objects interacting with each other by some force, e.g. the gravitational force. N-Body simulations have been used in particles simulation such as astrophysical and molecular dynamics simulations. There are a number of approaches for solving the N-Body problem, such as the Barnes-Hut algorithm, the Fast Multipole method, the Parallel Multipole Tree Algorithm method and the direct calculation method. In the direct calculation approach, for every particle in the system, the force between that particle and every other particle in the system is calculated, resulting in an O(n2) operation for each time step where n is the number of particles in the system.

No Cost Options for Intel Data Analytics Acceleration Library (DAAL), Support yourself, Royalty-Free

Intel® DAAL is a library product from Intel that accelerates big data analytics by providing highly optimized algorithmic building blocks for all data analysis stages (Pre-processing, Transformation, Analysis, Modeling, Validation, and Decision Making) for offline, streaming and distributed analytics usages. It’s designed for use with popular data platforms including Hadoop*, Spark*, R, and Matlab*. for highly efficient data access. Intel DAAL is available for Linux*, OS X* and Windows*.

No Cost Options for Intel Math Kernel Library (MKL), Support Yourself, Royalty-Free

Here is a guide to various ways to obtain the latest version of the Intel® Math Kernel Library (Intel® MKL) for free without access to Intel® Premier Support (get support by posting to the Intel Math Kernel Library forum). Anytime you want, the full suite of tools (Intel® Parallel Studio XE) with Intel® Premier Support and access to previous library versions can be purchased worldwide.
订阅 OpenMP*