PI/OT: Parallel I/O templates

This paper presents a novel, top-down, high-level approach to parallelizing file I/O. Each parallel file descriptor is annotated with a high-level specification, or template, of the expected parallel behavior. The annotations are external to and independent of the source code. At run-time, all I/O u...

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Bibliographic Details
Published in:Parallel computing Vol. 23; no. 4; pp. 543 - 570
Main Authors: Parsons, Ian, Unrau, Ron, Schaeffer, Jonathan, Szafron, Duane
Format: Journal Article
Language:English
Published: Elsevier B.V 01.06.1997
Subjects:
Enterprise
Parallel I/O
Parallel programming systems
PI/OT
PIOUS
Templates
Parallel I/O
Enterprise
Templates
PI/OT
Parallel programming systems
PIOUS
ISSN:0167-8191, 1872-7336
Online Access:Get full text
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Summary:This paper presents a novel, top-down, high-level approach to parallelizing file I/O. Each parallel file descriptor is annotated with a high-level specification, or template, of the expected parallel behavior. The annotations are external to and independent of the source code. At run-time, all I/O using a parallel file descriptor adheres to the semantics of the selected template. By separating the parallel I/O specifications from the code, a user can quickly change the I/O behavior without rewriting the code. Templates can be composed hierarchically to construct complex access patterns. Two sample parallel programs using these templates are compared against versions implemented in an existing parallel I/O system (PIOUS). The sample programs show that the use of parallel I/O templates are beneficial from both the performance and software engineering points of view.
ISSN:0167-8191
1872-7336
DOI:10.1016/S0167-8191(97)00013-6