Performance and scalability analysis of teraflop-scale parallel architectures using multidimensional wavefront applications

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The authors develop a model for the parallel performance of algorithms that consist of concurrent, two-dimensional wavefronts implemented in a message passing environment. The model, based on a LogGP machine parameterization, combines the separate contributions of computation and communication wavefronts. They validate the model on three important supercomputer systems, on up to 500 processors. They use data from a deterministic particle transport application taken from the ASCI workload, although the model is general to any wavefront algorithm implemented on a 2-D processor domain. They also use the validated model to make estimates of performance and scalability of wavefront algorithms on ... continued below

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13 p.

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Hoisie, A.; Lubeck, O. & Wasserman, H. December 31, 1998.

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Description

The authors develop a model for the parallel performance of algorithms that consist of concurrent, two-dimensional wavefronts implemented in a message passing environment. The model, based on a LogGP machine parameterization, combines the separate contributions of computation and communication wavefronts. They validate the model on three important supercomputer systems, on up to 500 processors. They use data from a deterministic particle transport application taken from the ASCI workload, although the model is general to any wavefront algorithm implemented on a 2-D processor domain. They also use the validated model to make estimates of performance and scalability of wavefront algorithms on 100-TFLOPS computer systems expected to be in existence within the next decade as part of the ASCI program and elsewhere. In this context, they analyze two problem sizes. The model shows that on the largest such problem (1 billion cells), inter-processor communication performance is not the bottleneck. Single-node efficiency is the dominant factor.

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13 p.

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INIS; OSTI as DE99002404

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  • Supercomputing 1998, Orlando, FL (United States), 7-13 Nov 1998

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  • Other: DE99002404
  • Report No.: LA-UR--98-3538
  • Report No.: CONF-981111--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 334322
  • Archival Resource Key: ark:/67531/metadc678337

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 31, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 25, 2016, 10:22 p.m.

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Hoisie, A.; Lubeck, O. & Wasserman, H. Performance and scalability analysis of teraflop-scale parallel architectures using multidimensional wavefront applications, article, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc678337/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.