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

Mason researchers to receive funding for GPU-based computing cluster

May. 3, 2021

OpenACC Highlights: March 2021

Mar. 31, 2021

Clacc – Open Source OpenACC Compiler and Source Code Translation Project

Mar. 16, 2021

OpenACC Highlights: February 2021

Feb. 25, 2021

EPEEC Partners BSC and INESC-ID Improve Multi-Device Performance of OmpSs-2@OPENACC

Feb. 22, 2021

Upcoming Events

NASA GPU Hackathon
September 20, 2021
Digital Event
CSCS GPU Hackathon 2021
September 20, 2021
Digital Event
NCHC GPU Hackathon 2021
October 5, 2021
Digital Event
OLCF GPU Hackathon 2021
October 18, 2021
Digital Event

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