SCHEDULE: NOV 15-20, 2015

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Regent: A High-Productivity Programming Language for HPC with Logical Regions

SESSION: Programming Systems

EVENT TYPE: Papers

EVENT TAG(S): Programming Systems

TIME: 3:30PM - 4:00PM

SESSION CHAIR(S): Dries Kimpe

AUTHOR(S):Elliott Slaughter, Wonchan Lee, Sean Treichler, Michael Bauer, Alex Aiken

ROOM:18AB

ABSTRACT:

We present Regent, a high-productivity programming language for high performance computing with logical regions. Regent users compose programs with tasks (functions eligible for parallel execution) and logical regions (hierarchical collections of structured objects). Regent programs appear to execute sequentially, require no explicit synchronization, and are trivially deadlock-free. Regent's type system catches many common classes of mistakes and guarantees that a program with correct serial execution produces identical results on parallel and distributed machines.

We present an optimizing compiler for Regent that translates Regent programs into efficient implementations for Legion, an asynchronous task-based model. Regent employs several novel compiler optimizations to minimize the dynamic overhead of the runtime system and enable efficient operation. We evaluate Regent on three benchmark applications and demonstrate that Regent achieves performance comparable to hand-tuned Legion.

Chair/Author Details:

Dries Kimpe (Chair) - KCG Holdings, Inc.|

Elliott Slaughter - Stanford University

Wonchan Lee - Stanford University

Sean Treichler - Stanford University

Michael Bauer - NVIDIA Corporation

Alex Aiken - Stanford University

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Paper provided by the ACM Digital Library

Paper also available from IEEE Computer Society