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PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN
VERSION:1.0
BEGIN:VEVENT
DTSTART:20111116T011500Z
DTEND:20111116T030000Z
LOCATION:WSCC North Galleria 2nd/3rd Floors
DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: The statistical properties of data movement to and from mass storage (I/O) on a high-performance computer (HPC) system re- veal the system-wide coordination of transactions from the com- pute nodes to the I/O nodes. This research exploits server-side observations to isolate much of the I/O traffic into events that are closely related to, though not identical with, those trans- actions. The statistics of those events demonstrate a pervasive under-performance of a large fraction of the system workload. This analysis documents both the breadth and the severity of the problem on one HPC system.=0AIn addition, we present a new visualization scheme for the time series of I/O observations. This scheme organizes and displays intricate numerical content in a meaningful and easy to under- stand graphical representation.
SUMMARY:I/O Workload Analysis with Server-side Data Collection
PRIORITY:3
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