OpenACC Shines in Global Climate/Weather Codes

November 14, 2017

OpenACC, the directive-based parallel programming model used mostly for porting codes to GPUs for use on heterogeneous systems, came to SC17 touting impressive Read more…

By John Russell

PGI Rolls Out Support for Volta 100 in its 2017 Compilers and Tools Suite

September 14, 2017

PGI today announced a fairly lengthy list of new features to version 17.7 of its 2017 Compilers and Tools. The centerpiece of the additions is support for the T Read more…

By John Russell

Optimizing Codes for Heterogeneous HPC Clusters Using OpenACC

July 3, 2017

Looking at the Top500 and Green500 ranks, one clearly realizes that most HPC systems are heterogeneous architecture using COTS (Commercial Off-The-Shelf) hardware, combining traditional multi-core CPUs with massively parallel accelerators, such as GPUs and MICs. With processor frequencies now hitting a solid wall, the only truly open avenue for riding today the Moore’s law is increasing hardware parallelism in several different ways: more computing nodes, more processors in each node, more cores within each processor, and longer vector instructions in each core. Read more…

By Enrico Calore et. al.

OpenACC Shows Growing Strength at ISC

June 19, 2017

OpenACC is strutting its stuff at ISC this year touting expanding membership, a jump in downloads, favorable benchmarks across several architectures, new staff Read more…

By John Russell

OpenACC Expands Community, Reveals Roadmap Details

November 7, 2016

In advance of the SC16 expo in Salt Lake City next week, the OpenACC standards group today welcomed newest member NSSC-Wuxi and highlighted a number of important developments for the directives-based programming standard. Ahead of the announcement, HPCwire spoke with Michael Wolfe, technical director of OpenACC, and Duncan Poole, OpenACC president and director of platform alliances for accelerated computing at Nvidia. Read more…

By Tiffany Trader

Compilers and More: OpenACC to OpenMP (and back again)

June 29, 2016

In the last year or so, I’ve had several academic researchers ask me whether I thought it was a good idea for them to develop a tool to automatically convert OpenACC programs to OpenMP 4 and vice versa. In each case, the motivation was that some systems had OpenMP 4 compilers (x86 plus Intel Xeon Phi Knights Corner) and others had OpenACC (x86 plus NVIDIA GPU or AMD GPU), and someone wanting to run a program across both would need two slightly different programs. In each case, the proposed research sounded like a more-or-less mechanical translation process, something more like a sophisticated awk script, and that’s doomed from the start. I will explain below in more detail how I came to this conclusion. Read more…

By Michael Wolfe

OpenACC Adds Support for OpenPOWER; Touts Growing Traction

June 13, 2016

In a show of strength leading up to ISC the OpenACC standards group today announced its first OpenPOWER implementation, the addition of three new members – University of Illinois, Brookhaven National Laboratory, and Stony Brook University – and details of its expanding 2016 training schedule. Michael Wolfe, technical director of OpenACC, also talked with HPCwire about thorny compiler challenges still remaining as... Read more…

By John Russell

OpenACC Reviews Latest Developments and Future Plans

November 11, 2015

This week during the lead up to SC15 the OpenACC standards group announced several new developments including the release and ratification of the 2.5 version of Read more…

By Tiffany Trader

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