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DTSTAMP:20181221T160731Z
LOCATION:C141/143/149
DTSTART;TZID=America/Chicago:20181115T163000
DTEND;TZID=America/Chicago:20181115T170000
UID:submissions.supercomputing.org_SC18_sess186_pap206@linklings.com
SUMMARY:A Year in the Life of a Parallel File System
DESCRIPTION:Paper\nArchitectures, Data Management, File Systems, Networks,
  State of the Practice, System Software, Workflows, Tech Program Reg Pass\
 n\nA Year in the Life of a Parallel File System\n\nLockwood, Snyder, Wang,
  Byna, Carns...\n\nI/O performance is a critical aspect of data-intensive 
 scientific computing.  We seek to advance the state of the practice in und
 erstanding and diagnosing I/O performance issues through investigation of 
 a comprehensive I/O performance data set that captures a full year of prod
 uction storage activity at two leadership-scale computing facilities.  We 
 demonstrate techniques to identify regions of interest, perform focused in
 vestigations of both long-term trends and transient anomalies, and uncover
  the contributing factors that lead to performance fluctuation.\n\nWe find
  that a year in the life of a parallel file system is comprised of distinc
 t regions of long-term performance variation in addition to short-term per
 formance transients.  We demonstrate how systematic identification of thes
 e performance regions, combined with comprehensive analysis, allows us to 
 isolate the factors contributing to different performance maladies at diff
 erent time scales.  From this, we present specific lessons learned and imp
 ortant considerations for HPC storage practitioners.
URL:https://sc18.supercomputing.org/presentation/?id=pap206&sess=sess186
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