Terascale spectral element algorithms and implementations

H. M. Tufo, P. F. Fischer

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We describe the development and implementation of an efficient spectral element code for multimillion gridpoint simulations of incompressible flows in general two- and three-dimensional domains. Key to this effort has been the development of scalable solvers for elliptic problems and a stabilization scheme that admits full use of the methods high-order accuracy. We review these and other recently developed algorithmic underpinnings that have resulted in good parallel and vector performance on a broad range of architectures and that, with sustained performance of 319 GFLOPS on 2048 nodes of the Intel ASCI-Red machine at Sandia, readies us for the multithousand node terascale computing systems now coming on line at the DOE labs.

Original languageEnglish (US)
Title of host publicationACM/IEEE SC 1999 Conference, SC 1999
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages1
ISBN (Electronic)1581130910, 9781581130911
StatePublished - 1999
Externally publishedYes
Event1999 ACM/IEEE Conference on Supercomputing, SC 1999 - Portland, United States
Duration: Nov 13 1999Nov 19 1999

Publication series

NameACM/IEEE SC 1999 Conference, SC 1999


Other1999 ACM/IEEE Conference on Supercomputing, SC 1999
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Hardware and Architecture


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