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URN: urn:nbn:de:0030-drops-20781
URL: http://drops.dagstuhl.de/opus/volltexte/2009/2078/
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Davis, Timothy

Multifrontral multithreaded rank-revealing sparse QR factorization

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Abstract

SuiteSparseQR is a sparse multifrontal QR factorization algorithm. Dense matrix methods within each frontal matrix enable the method to obtain high performance on multicore architectures. Parallelism across different frontal matrices is handled with Intel's Threading Building Blocks library. Rank-detection is performed within each frontal matrix using Heath's method, which does not require column pivoting. The resulting sparse QR factorization obtains a substantial fraction of the theoretical peak performance of a multicore computer.

BibTeX - Entry

@InProceedings{davis:DSP:2009:2078,
  author =	{Timothy Davis},
  title =	{Multifrontral multithreaded rank-revealing sparse QR factorization},
  booktitle =	{Combinatorial Scientific Computing},
  year =	{2009},
  editor =	{Uwe Naumann and Olaf Schenk and Horst D. Simon and Sivan Toledo},
  number =	{09061},
  series =	{Dagstuhl Seminar Proceedings},
  ISSN =	{1862-4405},
  publisher =	{Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, Germany},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2009/2078},
  annote =	{Keywords: Sparse matrix algorithms, QR factorization, multifrontal}
}

Keywords: Sparse matrix algorithms, QR factorization, multifrontal
Seminar: 09061 - Combinatorial Scientific Computing
Issue Date: 2009
Date of publication: 24.07.2009


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