This page contains information on GCC's implementation of the OpenACC specification and related functionality. OpenACC is intended for programming accelerator devices such as GPUs, including code offloading to these devices. Currently supported are Nvidia PTX (nvptx) and AMD Radeon (Graphics Core Next, GCN, and Instinct, CDNA) devices.

Using OpenACC

Use the -fopenacc flag to enable OpenACC compilation; see compilation options for additional flags.

Active GCC Releases

Development Branches: OG13 and mainline/GCC 14

* Mainline (GCC 14) * `devel/omp/gcc-13` (short: og13) in the GCC Git repository.

The OG13 branch contains OpenACC, OpenMP, and offloading features backported from mainline and also improvements that are currently only on OG13, which still have to be integrated into mainline.

For discussing this project, please use the standard GCC resources (mailing lists, Bugzilla, and so on). It's helpful to put a [OpenACC] tag into your emails' subject line, and set the openacc keyword in any Bugzilla issues filed.

For instructions how to build offloading-enabled GCC from source, see Offloading: How to try offloading enabled GCC.

Technical Details

Issue Tracking

Open OpenACC bugs

None: OpenACC (last edited 2023-05-23 06:35:21 by TobiasBurnus)