NDLI: Parallel netCDF: A High-Performance Scientific I/O Interface

Content Provider	IEEE Xplore Digital Library
Author	Jianwei Li Wei-keng Liao Choudhary, A. Ross, R. Thakur, R. Gropp, W. Latham, R. Siegel, A. Gallagher, B. Zingale, M.
Copyright Year	2003
Description	Author affiliation: Northwestern University (Jianwei Li)
Abstract	Dataset storage, exchange, and access play a critical role in scientific applications. For such purposes netCDF serves as a portable, efficient file format and programming interface, which is popular in numerous scientific application domains. However, the original interface does not provide an efficient mechanism for parallel data storage and access. In this work, we present a new parallel interface for writing and reading netCDF datasets. This interface is derived with minimal changes from the serial netCDF interface but defines semantics for parallel access and is tailored for high performance. The underlying parallel I/O is achieved through MPI-IO, allowing for substantial performance gains through the use of collective I/O optimizations. We compare the implementation strategies and performance with HDF5. Our tests indicate programming convenience and significant I/O performance improvement with this parallel netCDF (PnetCDF) interface.
Starting Page	39
Ending Page	39
File Size	162353
Page Count	1
File Format	PDF
ISBN	1581136951
DOI	10.1109/SC.2003.10053
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-11-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Association for Computing Machinery, Inc. (ACM)
Subject Keyword	Writing Government Memory Parallel programming Laboratories Observatories Performance gain Testing Computer interfaces Concurrent computing
Content Type	Text
Resource Type	Article

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