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) reduction(max:error)
  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

Barbara Chapman Joins OpenACC Organization

May. 2, 2022

OpenACC Highlights: February 2022

Feb. 28, 2022

OpenACC Highlights: August 2021

Aug. 31, 2021

Pioneering Frontier: Test-Driving with "User Zero"

Aug. 31, 2021

OpenACC Highlights: July 2021

Jul. 29, 2021

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June 21, 2022
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June 28, 2022
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June 29, 2022
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STFC-Hartree Centre N-Ways to GPU Programming Bootcamp
July 4, 2022
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