sponsored byIEEEACMThe International Conference for High Performance 
Computing, Networking, Storage and Analysis
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SCHEDULE: NOV 16-21, 2014

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Parallel I/O In Practice

SESSION: Parallel I/O In Practice

EVENT TYPE: Tutorials

TIME: 8:30AM - 5:00PM



I/O on HPC systems is a black art. This tutorial sheds light on the
state-of-the-art in parallel I/O and provides the knowledge necessary for
attendees to best leverage I/O resources available to them. We cover the
entire I/O software stack from parallel file systems at the lowest layer, to
intermediate layers (such as MPI-IO), and finally high-level I/O libraries
(such as HDF-5). We emphasize ways to use these interfaces that result in
high performance. Benchmarks on real systems are used throughout to show
real-world results.

This tutorial first discusses parallel file systems in detail (PFSs). We cover
general concepts and examine three examples: GPFS, Lustre, and PanFS.
We examine the upper layers of the I/O stack, covering POSIX I/O,
MPI-IO, Parallel netCDF, and HDF5. We discuss interface features, show code
examples, and describe how application calls translate into PFS
operations. Finally we discuss I/O best practice.

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