SC12 Home > SC12 Schedule > SC12 Presentation - Design, Implementation and Evolution of High Level Accelerator Programming

SCHEDULE: NOV 10-16, 2012

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Design, Implementation and Evolution of High Level Accelerator Programming

SESSION: Compiling for Accelerators

EVENT TYPE: Keynote and Invited Talks

TIME: 1:30PM - 2:15PM

SESSION CHAIR: Robert F. Lucas

Presenter(s):Michael Wolfe


In 2008, PGI designed the PGI Accelerator programming model and began work on an implementation to target heterogeneous X64 host + NVIDIA GPU systems. In November 2011, Cray, NVIDIA and CAPS Entreprise joined with PGI to refine and standardize directive-based GPU and accelerator programming with the introduction of the OpenACC API. This presentation will discuss three aspects of this language design evolution. We will describe how the programming model changed over time to take advantage of the features of current accelerators, while trying to avoid various performance cliffs. We describe advantages and problems associated with committee-designed languages and specifications. Finally, we describe several specific challenges related to the implementation of OpenACC for the current generation of targets, and how we solved them in the PGI Accelerator compilers.

Chair/Presenter Details:

Robert F. Lucas (Chair) - Information Sciences Institute

Michael Wolfe - The Portland Group, Inc.

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