Title: Parallel universal access layer: A scalable I/O library for integrated tokamak modeling
Authors: Galonska, A ×
Gibbon, Paul
Imbeaux, F
Frauel, Y
Guillerminet, B
Manduchi, G
Wolf, F #
Issue Date: 2013
Publisher: North-Holland Pub. Co.
Series Title: Computer Physics Communications vol:184 issue:3 pages:638-646
Abstract: The paper describes a parallel-I/O extension of the Universal Access Layer, a multilanguage
interface used for exchange of standardized data objects between Integrated
Tokamak Modelling (ITM) codes. Although our evaluation focuses on Lustre, the general
idea also applies to other parallel file systems. A snapshot of the current implementation
is given, followed by an analysis of user and system requirements. The design
derived from the serial version of the UAL is described, emphasized features such as
the ability to choose between serial and parallel I/O are explained. Performance tests
comparing the implementation to other I/O methods are made to analyse the impact of
the implementation. The outcome shows that the new implementation not only enables
the I/O of data sets with several GByte in size but also speeds up the write rate by a
factor of 13 in the best case.
ISSN: 0010-4655
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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