Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis of parallel I/O use on the UK national supercomputing service,
  ARCHER using Cray LASSi and EPCC SAFE   In this paper, we describe how we have used a combination of the LASSi tool
(developed by Cray) and the SAFE software (developed by EPCC) to collect and
analyse Lustre I/O performance data for all jobs running on the UK national
supercomputing service, ARCHER; and to provide reports on I/O usage for users
in our standard reporting framework. We also present results from analysis of
parallel I/O use on ARCHER and analysis on the potential impact of different
applications on file system performance using metrics we have derived from the
LASSi data. We show that the performance data from LASSi reveals how the same
application can stress different components of the file system depending on how
it is run, and how the LASSi risk metrics allow us to identify use cases that
could potentially cause issues for global I/O performance and work with users
to improve their I/O use. We use the IO-500 benchmark to help us understand how
LASSi risk metrics correspond to observed performance on the ARCHER file
systems. We also use LASSi data imported into SAFE to identify I/O use patterns
associated with different research areas, understand how the research workflow
gives rise to the observed patterns and project how this will affect I/O
requirements in the future. Finally, we provide an overview of likely future
directions for the continuation of this work.

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The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: econ