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

OpenACC and Open Hackathons Highlights: Summer 2024

Aug. 30, 2024

Contributing to the Excellence of Scientific Research: IDRIS Holds its Fourth Open Hackathon

Aug. 22, 2024

LLVM Clang 19 Branched, LLVM 20 Enters Development- No AMD Zen 5 "Znver5" Merged Yet

Jul. 23, 2024

AMD 3DNow! instructions finally extinct as LLVM compiler drops support

Jul. 18, 2024

AMD's Newest Open-Source Surprise: "Peano" - An LLVM Compiler For Ryzen AI NPUs

Jun. 8, 2024

Upcoming Events

NVIDIA NIM Hackathon
September 18, 2024
Hybrid Event
NCHC N-Ways to GPU Programming Bootcamp
September 24, 2024
Hybrid Event
NVIDIA Holoscan Bootcamp
September 24, 2024
Digital Event
TACC Open Hackathon
October 15, 2024
Hybrid Event

Join Us

Tweets by OpenACCorg