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PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN
VERSION:1.0
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DTSTART:20111115T220000Z
DTEND:20111115T223000Z
LOCATION:TCC 304
DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: Meeting the power requirements of huge exascale machines of the future would become a major challenge. In this paper, we focus on minimizing cooling power and propose a technique that uses a combination of DVFS and temperature aware load balancing to constrain core temperatures as well as save cooling energy. Our scheme is designed specifically to suit tightly coupled parallel applications.=0A=0AThe temperature control comes at the cost of increased execution time, which we try to minimize. We experiment with three applications (with different power utilization profiles) running on a 128-core (32-node) cluster with a dedicated air conditioning unit. We calibrate the efficacy of our scheme based on three metrics: ability to control average core temperatures thereby avoiding hot spot occurrence, timing penalty minimization, and cooling energy savings. Our results show cooling energy savings of up to 57% with timing penalties mostly in the 2 to 20% range.
SUMMARY:A `Cool' Load Balancer for Parallel Applications
PRIORITY:3
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