An application-level parallel I/O library for Earth system models

John M. Dennis; Jim Edwards; Ray Loy; Robert Jacob; Arthur A. Mirin; Anthony P. Craig; Mariana Vertenstein

doi:10.1177/1094342011428143

An application-level parallel I/O library for Earth system models

John M. Dennis, Jim Edwards, Ray Loy, Robert Jacob, Arthur A. Mirin, Anthony P. Craig, Mariana Vertenstein

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

We describe the design and implementation of an application-level parallel I/O (PIO) library for the reading and writing of distributed arrays to several common scientific data formats. PIO provides the flexibility to control the number of I/O tasks through data rearrangement to an I/O friendly decomposition. This flexibility enables reductions in per task memory usage and improvements in disk I/O performance versus a serial I/O approach. We illustrate the impact various features within PIO have on memory usage and disk I/O bandwidth on a Cray XT5 system.

Original language	English
Pages (from-to)	43-53
Number of pages	11
Journal	International Journal of High Performance Computing Applications
Volume	26
Issue number	1
DOIs	https://doi.org/10.1177/1094342011428143
State	Published - Feb 2012

Keywords

Earth System Modeling
memory efficient
netCDF
parallel computing
Parallel I/O

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10.1177/1094342011428143

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abstract = "We describe the design and implementation of an application-level parallel I/O (PIO) library for the reading and writing of distributed arrays to several common scientific data formats. PIO provides the flexibility to control the number of I/O tasks through data rearrangement to an I/O friendly decomposition. This flexibility enables reductions in per task memory usage and improvements in disk I/O performance versus a serial I/O approach. We illustrate the impact various features within PIO have on memory usage and disk I/O bandwidth on a Cray XT5 system.",

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AU - Edwards, Jim

AU - Loy, Ray

AU - Jacob, Robert

AU - Mirin, Arthur A.

AU - Craig, Anthony P.

AU - Vertenstein, Mariana

PY - 2012/2

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AB - We describe the design and implementation of an application-level parallel I/O (PIO) library for the reading and writing of distributed arrays to several common scientific data formats. PIO provides the flexibility to control the number of I/O tasks through data rearrangement to an I/O friendly decomposition. This flexibility enables reductions in per task memory usage and improvements in disk I/O performance versus a serial I/O approach. We illustrate the impact various features within PIO have on memory usage and disk I/O bandwidth on a Cray XT5 system.

KW - Earth System Modeling

KW - memory efficient

KW - netCDF

KW - parallel computing

KW - Parallel I/O

UR - https://www.scopus.com/pages/publications/84857764170

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JF - International Journal of High Performance Computing Applications

IS - 1

ER -

An application-level parallel I/O library for Earth system models

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Keywords

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