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DTSTART:19700308T020000
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DTSTAMP:20211207T055408Z
LOCATION:Online
DTSTART;TZID=America/Chicago:20211114T110000
DTEND;TZID=America/Chicago:20211114T113000
UID:submissions.supercomputing.org_SC21_sess426_ws_mchpc104@linklings.com
SUMMARY:Using Bandwidth Throttling to Quantify Application Sensitivity to 
 Heterogeneous Memory
DESCRIPTION:Workshop\n\nUsing Bandwidth Throttling to Quantify Application
  Sensitivity to Heterogeneous Memory\n\nFoyer, Goglin\n\nMemory management
  is getting increasingly harder but also primarily important. The pluralit
 y of processing- and memory-systems require more care to be put into data 
 placement. To test models, designs and heuristics for data placement, the 
 programmer must be able to access these expensive systems, or find a way t
 o emulate them.\n\nWe propose to use the Resource Control features of the 
 Linux kernel and x86 processors to add heterogeneity to homogeneous memory
  systems to evaluate the impact of different bandwidths on performance. We
  define a new metric to evaluate the sensibility to bandwidth throttling a
 s an insight of the benefits of using high-bandwidth memory (HBM) for any 
 given application, without the need to access such devices. We evaluated b
 enchmarks with variable sensitivity to bandwidth, and validated our result
 s on two platforms with heterogeneous memory. Although representing an ide
 alized memory, our method gives reliable insight of potential gains when u
 sing HBM.\n\nTag: Online Only, Architectures, Memory Systems, Parallel Pro
 gramming Languages and Models, System Software and Runtime Systems\n\nRegi
 stration Category: Workshop Reg Pass
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