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UID:submissions.supercomputing.org_SC20_sess214_pec223@linklings.com
SUMMARY:Keynote 3: ECP – Recent Experiences in Porting Complex Application
 s to Accelerator-Based Systems
DESCRIPTION:Workshop\n\nKeynote 3: ECP – Recent Experiences in Porting Com
 plex Applications to Accelerator-Based Systems\n\nSiegel\n\nhe U.S. Depart
 ment of Energy's Exascale Computing Project (ECP) represents a broad effor
 t to enable mission critical science and engineering on next generation HP
 C systems. As part of this, ECP includes 24 application development teams 
 spanning a broad range of science and engineering domains. The teams are t
 asked in part with efficiently porting a flagship code to the forthcoming 
 Aurora and Frontier U.S. exascale systems.  These multi-GPU systems repres
 ent a significant departure from the hardware trajectory of previous gener
 ations. Thus, non-trivial code restructuring is expected.  What is perhaps
  surprising, though, is the extent to which porting has evolved into far m
 ore general hardware-driven algorithmic adaptations. More fundamental chan
 ges like exposing new axes of parallelism, increasing computational intens
 ity, prioritizing new physical models, and replacing time with ensemble av
 eraging have gone along with standard porting, such as data layout, loop o
 rdering, etc. In this talk I present a number of such examples of how the 
 particular choice of exascale hardware is having a surprisingly deep impac
 t on our approach to simulation.\n\nTag: Algorithms, Extreme Scale Computi
 ng, Performance/Productivity Measurement and Evaluation, Scalable Computin
 g, Scientific Computing\n\nRegistration Category: Workshop Reg Pass
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