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DTSTART:19700308T020000
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DTSTAMP:20200129T163557Z
LOCATION:505
DTSTART;TZID=America/Denver:20191118T113000
DTEND;TZID=America/Denver:20191118T115500
UID:submissions.supercomputing.org_SC19_sess128_ws_ia107@linklings.com
SUMMARY:A Mixed Precision Multicolor Point-Implicit Solver for Unstructure
 d Grids on GPUs
DESCRIPTION:Workshop\n\nA Mixed Precision Multicolor Point-Implicit Solver
  for Unstructured Grids on GPUs\n\nWalden, Nielsen, Diskin, Zubair\n\nThis
  paper presents a new mixed-precision implementation of a linear-solver ke
 rnel used in practical large-scale CFD simulations to improve GPU performa
 nce. The new implementation reduces memory traffic by using the half-preci
 sion format for some critical computations while maintaining double-precis
 ion solution accuracy. As the linear-solver kernel is memory bound on GPUs
 , a reduction in memory traffic directly translates to improved performanc
 e. The performance of the new implementation is assessed for a benchmark s
 teady flow simulation and a large-scale unsteady turbulent flow applicatio
 n. Both studies were conducted using NVIDIA® Tesla V100 GPUs on the Summit
  system at the Oak Ridge Leadership Computing Facility.\n\nTag: Workshop R
 eg Pass, Algorithms, Architectures, Irregular Applications\n\nRegistration
  Category: Workshop Reg Pass, Algorithms, Architectures, Irregular Applica
 tions
URL:https://sc19.supercomputing.org/presentation/?id=ws_ia107&sess=sess128
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