SC12 Home > SC12 Schedule > SC12 Presentation - Dealing with Portability and Performance on Heterogeneous Systems with Directive-Based Programming Approaches

SCHEDULE: NOV 10-16, 2012

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Dealing with Portability and Performance on Heterogeneous Systems with Directive-Based Programming Approaches

SESSION: Compiling for Accelerators

EVENT TYPE: Keynote and Invited Talks

TIME: 2:15PM - 3:00PM

SESSION CHAIR: Robert F. Lucas

Presenter(s):Fran├žois Bodin

ROOM:Ballroom-EFGH

ABSTRACT:
Directive-based programming is a very promising technology for dealing with heterogeneous many-core architectures. Emerging standards such as OpenACC and other initiatives such as OpenHMPP provide a solid ground for users to invest in such paradigm. On one side portability is required to ensure long software lifetime and to reduce maintenance cost. On the other-hand, obtaining efficient code requires to have a tight mapping between the code and the target architecture. In this presentation we describe the challenges in building programming tools based on directives. We show how OpenACC and OpenHMPP directives offer an incremental development for various heterogeneous architectures ranging from AMD, Intel, Nvidia to ARM. We explain why source-to-source compilers are particularly adequate when dealing with heterogeneity. Finally, we propose an auto-tuning framework for achieving better performance portability. On this later topic we advocate for a standard API to be included into current standardization initiatives.

Chair/Presenter Details:

Robert F. Lucas (Chair) - Information Sciences Institute

Fran├žois Bodin - CAPS

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