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

NVIDIA Shifts GTC San Jose to Online Event Due to Coronavirus

Mar. 2, 2020

OpenACC 2019 Year in Review: It's a Wrap

Jan. 24, 2020

A European Dialect for Exascale Programming

Jan. 6, 2020

OpenACC Cozies Up to C, C++, and Fortran Standards

Dec. 4, 2019

OpenACC Organization Unveils Expanded Vision to Ready HPC Community for Exascale

Nov. 18, 2019

Upcoming Events

GPU Technology Conference 2020
March 23, 2020
San Jose, California
SDSC GPU Hackathon 2020
May 11, 2020
San Diego, CA, USA
Princeton GPU Hackathon 2020
June 8, 2020
Princeton, NJ, USA
CCNU GPU Hackathon 2020
June 22, 2020
Hubei, China

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