NDLI: High Performance I/O

Content Provider	IEEE Xplore Digital Library
Author	Jackson, A. Reid, F. Hein, J. Soba, A. Saez, X.
Copyright Year	2011
Abstract	Parallelisation, serial optimisation, compiler tuning, and many more techniques are used to optimise and improve the performance scaling of parallel programs. One area which is frequently not optimised is file I/O. This is because it is often not considered to be key to the performance of a program and also because it is traditionally difficult to optimise and very machine specific. However, in the current era of Peta- and Exascale computing it is no longer possible to ignore I/O performance as it can significantly limit the scaling of many codes when executing on very large numbers of processors or cores. Furthermore, as producing data is the main purpose of most simulation codes any work that can be undertaken to provide improved performance of I/0 can be applicable to a very large range of simulation codes, and provide them with improved functionality (i.e. the ability to produce more data).This paper describes some of the issues surrounding I/O, the technology that is commonly deployed to provide I/O on HPC machines and the software libraries available to programmers to undertake I/O. The performance of all these aspects of I/O on arange of HPC systems were investigated by the authors and a represented in this paper to motivate the discussions in the paper.
Starting Page	349
Ending Page	356
File Size	227543
Page Count	8
File Format	PDF
ISBN	9781424496822
ISSN	10666192
DOI	10.1109/PDP.2011.16
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-09
Publisher Place	Cyprus
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	File systems Hardware Program processors Libraries Optimization Computational modeling Servers NetCDF I/O HPC optimisation parallelisation Lustre GPFS MPI-I/O HDF5
Content Type	Text
Resource Type	Article

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