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DTSTAMP:20260522T150119Z
LOCATION:C141/143/149
DTSTART;TZID=America/Chicago:20181114T113000
DTEND;TZID=America/Chicago:20181114T120000
UID:submissions.supercomputing.org_SC18_sess205_pap355@linklings.com
SUMMARY:Siena: Exploring the Design Space of Heterogeneous Memory Systems
DESCRIPTION:Ivy B. Peng and Jeffrey S. Vetter (Oak Ridge National Laborato
 ry)\n\nMemory systems are crucial to the performance, power, and cost of h
 igh-performance computing systems. Recently, multiple factors are driving 
 the need for more complex, deep memory hierarchies. However, architects an
 d customers are struggling to design memory systems that effectively balan
 ce multiple, often competing, factors in this large, multidimensional, and
  fast-moving design space. In this paper, we systematically explore the or
 ganization of heterogeneous memory systems on a framework, called Siena. S
 iena facilitates quick exploration of memory architectures with flexible c
 onfigurations of memory systems and realistic memory workloads. We perform
  a design space exploration on 22 proposed memory systems using eight rele
 vant workloads. Our results show that horizontal organizations of memories
  can achieve higher performance than that of vertical organizations when t
 he distribution of memory traffic balances the performance gap between mem
 ories. However, the coupling effects through shared resources and applicat
 ion behaviors could negate the advantage of high-performance memory in hor
 izontal organizations.\n\nTag: GPUs, Memory, NVRAM, Performance, System So
 ftware, Tools\n\nRegistration Category: Tech Program Reg Pass\n\nSession C
 hair: Rosa M. Badia (Barcelona Supercomputing Center (BSC); Polytechnic Un
 iversity of Catalonia, Spain)\n\n
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