What is OpenACC?

The OpenACC Organization is dedicated to helping the research and developer community advance science by expanding their accelerated and parallel computing skills. We have 3 areas of focus: participating in computing ecosystem development, providing training and education on programming models, resources and tools, and developing the OpenACC specification.

#pragma acc data copy(A) create(Anew)
while ( error > tol  &&  iter  <  iter_max )  {
  error = 0.0;
#pragma acc kernels
  {
#pragma acc loop independent collapse(2)
  for (  int  j = 1; j < n-1;  j++ )  {
    for (  int  i = 1; i < m-1; i++ )  {
       Anew [j] [i] = 0.25 * ( A [j] [i+1] + A [j] [i-1] +
                                      A [j-1] [i] + A [j+1] [i]);
       error = max ( error, fabs (Anew [j] [i] - A [j] [i]));
      }
    }
  } 
}

Resources Access tutorials, guides, lectures, code samples, hands-on exercises and more. Get the Specs Download the latest OpenACC specification, technical report and work-in-progress proposals. Tools Get OpenACC compilers and tools designed by multiple vendors and academic organizations. Success Stories Learn how OpenACC users accelerated their scientific applications.

Latest News

Oak Ridge Leadership Computing Facility Fosters GCC Compiler Development with Mentor Contract

Sep. 3, 2020

OpenACC Highlights: August 2020

Aug. 28, 2020

AMD Radeon GPU Offloading For GCC Still Maturing In 2020

Aug. 27, 2020

University of Delaware College of Engineering Announces 2020 Dean’s Awards

Aug. 4, 2020

OpenACC Highlights: July 2020

Jul. 29, 2020

Upcoming Events

NASA GPU Hackathon 2020
October 5, 2020
Mountain View, CA, USA
NCHC GPU Hackathon
October 12, 2020
Taipei, Taiwan
OLCF GPU Hackathon 2020
October 26, 2020
Knoxville, TN, USA
CSC GPU Hackathon 2020
November 2, 2020
Espoo, Finland

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