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

The Weather Company Raises GPU, Storage Forecasts

Jan. 12, 2021

Programming the Soon-To-Be World's Fastest Supercomputer

Jan. 4, 2021

OpenACC Highlights: November 2020

Nov. 30, 2020

OpenACC Organization Continues Momentum

Nov. 23, 2020

OpenACC Highlights: October 2020

Oct. 30, 2020

Upcoming Events

Optimizing Stencil Operations with OpenACC
January 14, 2021
Digital Event
SFU GPU Hackathon
February 21, 2021
Digital Event
Helmholtz GPU Hackathon 2021
March 15, 2021
Digital Event
CCNU GPU Hackathon 2021
April 12, 2021
Central China Normal University

Join Us

Tweets by OpenACCorg