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DTSTAMP:20181221T160907Z
LOCATION:C155
DTSTART;TZID=America/Chicago:20181111T083000
DTEND;TZID=America/Chicago:20181111T170000
UID:submissions.supercomputing.org_SC18_sess238_tut121@linklings.com
SUMMARY:Parallel-IO in Practice
DESCRIPTION:Tutorial\nI/O, Tools, Tutorial Reg Pass\n\nParallel-IO in Prac
 tice\n\nLatham, Ross, Welch, Lockwood\n\nI/O on HPC systems is a black art
 . This tutorial sheds light on the state-of-the-art in parallel I/O and pr
 ovides the knowledge necessary for attendees to best leverage I/O resource
 s available to them. We cover the entire I/O software stack including stor
 age and parallel file systems at the lowest layer, the role of burst buffe
 rs (NVRAM), intermediate layers (such as MPI-IO), and high-level I/O libra
 ries (such as HDF-5). We emphasize ways to use these interfaces that resul
 t in high performance and tools for generating insight into these stacks. 
 Benchmarks on real systems are used throughout to show real-world results.
 \n\nIn the first third of the tutorial we cover the fundamentals of parall
 el I/O.  We discuss storage technologies, both present and near-future.   
 Our parallel file systems material covers general concepts and gives examp
 les from Lustre, GPFS, PanFS, HDFS, Ceph, and Cloud Storage.\n\nOur second
  third takes a more application-oriented focus. We examine the upper libra
 ry layers of the I/O stack, covering MPI-IO, Parallel netCDF, and HDF5. We
  discuss interface features, show code examples, and describe how applicat
 ion calls translate into PFS operations.  \n\nFinally, we discuss tools fo
 r capturing and understanding I/O behavior.
URL:https://sc18.supercomputing.org/presentation/?id=tut121&sess=sess238
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