Samsung Brings OpenACC 1.0+ Support To GCC Fortran
Written by Michael Larabel in Compiler on 24 January 2014 at 01:49 PM EST. 3 Comments
Samsung is still working towards bringing OpenACC support to GCC. We've seen Samsung developers working on OpenACC for GCC over the past several months -- along with other OpenACC initiatives out of CodeSourcery, etc -- and now there's some new OpenACC GCC Fortran patches.

Published this week by Ilmir Usmanov at Samsung is OpenACC 1.0+ support for the Fortran front-end that the developer is now pursuing be pushed into the GOMP4 compiler branch. The patches provide near complete support for OpenACC 1.0 plus some elements of OpenACC 2.0.

Those Fortran developers interested in OpenACC support can try out and test these patches that will hopefully be merged into the mainline GOMP4 branch soon.

In related news, Thomas Schwinge at CodeSourcery is taking over the GOMP4 branch as its current maintainer, Jakub Jelinek at Red Hat, is busy preparing the GCC 4.9 compiler release. The GOMP4 branch contains much of GCC's OpenMP 4.0 and OpenACC support work from various organizations.

For those unfamiliar with OpenACC, it's a programming standard backed by NVIDIA, Cray, and other organizations for heterogeneous CPU/GPU programming in C/C++ and Fortran. OpenACC is quite similar to OpenMP with its pragmas but the advantage of OpenACC is its GPU focus. OpenACC support is still coming about in GCC with numerous implementations having been published from converting OpenACC down to either OpenMP or OpenCL code, etc. CodeSourcery has been aiming for OpenACC 2.0 with NVIDIA GPU support as part of a deal with the graphics card maker.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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