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GCC Support Published For OpenACC On The GPU

Compiler

Published on 30 September 2013 12:37 AM EDT
Written by Michael Larabel in Compiler
4 Comments

Samsung has published their code to a modified version of the GCC Compiler that supports using the OpenACC 1.0 parallel computing specification. OpenACC allows for simplified parallel programming on heterogeneous CPU and GPU systems.

OpenACC is similar in nature to OpenMP but the programming standard allows exploiting the parallel potential out of graphics processors. OpenACC is annotated Fortran, C, and C++ code.

Evgeny Gavrin of Samsung announced the creation of an OpenACC GCC branch last week. The OpenACC support isn't finished yet but does produce working binaries with support for GPU offloading. The compiler supports the C, C++, and Fortran versions of OpenACC except only OpenACC 1.0 is supported and not the newer 2.0 specification. The OpenACC compiler support ends up generating translated OpenCL 1.1 code for the GPU offloading.

Hopefully the OpenACC GCC support will be able to be complete soon enough and merged to master. Right now only the PGI, Cray, and CAPS commercial compilers support OpenACC and there's been no open-source implementation aside from an experimental accULL project out of a European university.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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