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DTSTART:19700308T020000
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BEGIN:VEVENT
DTSTAMP:20210402T160544Z
LOCATION:Poster Module
DTSTART;TZID=America/New_York:20201119T083000
DTEND;TZID=America/New_York:20201119T170000
UID:submissions.supercomputing.org_SC20_sess337_rpost159@linklings.com
SUMMARY:The Arithmetic Intensity of High-Order Discontinuous Galerkin Meth
 ods for Hyperbolic Systems
DESCRIPTION:Posters, Research Posters\n\nThe Arithmetic Intensity of High-
 Order Discontinuous Galerkin Methods for Hyperbolic Systems\n\nTandon, Joh
 nsen\n\nHigh-fidelity numerical simulations of complex flow problems requi
 re high-resolution capabilities, which can be achieved by employing high-o
 rder methods. A class of recovery-assisted discontinuous Galerkin (RADG) m
 ethods can achieve high-orders of accuracy by strategically combining degr
 ees of freedom from neighboring cells; the order of accuracy can be increa
 sed by increasing the polynomial degree p of the solution representation. 
 An increase in p, however, increases the number of degrees of freedom, the
 reby significantly increasing the memory footprint due to I/O operations a
 nd floating-point operations. In this study, the arithmetic intensity, whi
 ch is the amount of work done per data transferred, of a class of RADG met
 hods for hyperbolic systems of conservation laws is theoretically analyzed
  for p=1 through 6. Different data cache models are considered, and numeri
 cal experiments demonstrate that RADG methods have high arithmetic intensi
 ty, thus more effectively utilizing on-node floating-point capabilities on
  modern high-performance computing (HPC) platforms.\n\nRegistration Catego
 ry: Tech Program Reg Pass, Exhibits Reg Pass
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