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DTSTART:19700308T020000
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DTSTAMP:20210402T160558Z
LOCATION:Track 5
DTSTART;TZID=America/New_York:20201111T123000
DTEND;TZID=America/New_York:20201111T130000
UID:submissions.supercomputing.org_SC20_sess195_ws_mchpc111@linklings.com
SUMMARY:Leveraging a Heterogenous Memory System for a Legacy Fortran Code:
  The Interplay of Storage Class Memory, DRAM, and OS
DESCRIPTION:Workshop\n\nLeveraging a Heterogenous Memory System for a Lega
 cy Fortran Code: The Interplay of Storage Class Memory, DRAM, and OS\n\nCh
 ristgau, Steinke\n\nLarge capacity Storage Class Memory (SCM) opens new po
 ssibilities for workloads requiring a large memory footprint. We examine o
 ptimization strategies for a legacy Fortran application on systems with an
  heterogeneous memory configuration comprising SCM and DRAM. We present a 
 performance study for the multigrid solver component of the large-eddy sim
 ulation framework PALM for different memory configurations with large capa
 city SCM. An important optimization approach is the explicit assignment of
  storage locations depending on the data access characteristic to take adv
 antage of the heterogeneous memory configuration. We are able to demonstra
 te that an explicit control over memory locations provides better performa
 nce compared to transparent hardware settings. As on aforementioned system
 s the page management by the OS appears as critical performance factor, we
  study the impact of different huge page settings.\n\nRegistration Categor
 y: Workshop Reg Pass
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