SC is the International Conference for
 High Performnance Computing, Networking, Storage and Analysis

SCHEDULE: NOV 13-19, 2010

Parallel I/O in Practice

SESSION: M09: Parallel I/O in Practice

EVENT TYPE: Tutorial

TIME: 8:30AM - 5:00PM

Presenter(s):Rob Ross, Rob Latham, Brent Welch

ROOM:393

ABSTRACT:
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, and 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 four examples: GPFS, Lustre, PanFS, and PVFS. 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.

Chair/Presenter Details:

Rob Ross - Argonne National Laboratory

Rob Latham - Argonne National Laboratory

Brent Welch - Panasas

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