Using shared arrays in message-driven parallel programs

► We describe a discipline of access modes for deterministic usage of shared arrays. ► These modes can be statically enforced with standard tools. ► We present the combination of message-driven and shared array models of parallelism. ► This model is demonstrated through coupling a new algorithm to e...

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Bibliographic Details
Published in:Parallel computing Vol. 38; no. 1; pp. 66 - 74
Main Authors: Miller, Phil, Becker, Aaron, Kalé, Laxmikant
Format: Journal Article
Language:English
Published: Elsevier B.V 01.01.2012
Subjects:
Arrays
Asynchronous execution
Composition
Computer simulation
Distributed shared arrays
Dynamical systems
Dynamics
Handles
Mathematical models
Parallel processing
Parallel programming models
Programming
Parallel programming models
Composition
Distributed shared arrays
Asynchronous execution
ISSN:0167-8191, 1872-7336
Online Access:Get full text
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Summary:► We describe a discipline of access modes for deterministic usage of shared arrays. ► These modes can be statically enforced with standard tools. ► We present the combination of message-driven and shared array models of parallelism. ► This model is demonstrated through coupling a new algorithm to existing code. This paper describes a safe and efficient combination of the object-based message-driven execution and shared array parallel programming models. In particular, we demonstrate how this combination engenders the composition of loosely coupled parallel modules safely accessing a common shared array. That loose coupling enables both better flexibility in parallel execution and greater ease of implementing multi-physics simulations. As a case study, we describe how the parallelization of a new method for molecular dynamics simulation benefits from both of these advantages. We also describe a system of typed handle objects that embed some of the determinacy constraints of the Multiphase Shared Array programming model in the C++ type system, to catch some violations at compile time. The combined programming model communicates in terms of these handles as a natural means of detecting and preventing errors.
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content type line 23
ISSN:0167-8191
1872-7336
DOI:10.1016/j.parco.2011.10.005