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  Super Scalar Sample Sort

Sanders, P. (2004). Super Scalar Sample Sort. In Algorithms – ESA 2004: 12th Annual European Symposium (pp. 784-796). Berlin, Germany: Springer.

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 Creators:
Sanders, Peter1, Author           
Albers, Susanne1, Editor           
Radzik, Tomasz2, Editor
Affiliations:
1Algorithms and Complexity, MPI for Informatics, Max Planck Society, ou_24019              
2Max Planck Society, ou_persistent13              

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 Abstract: Sample sort, a generalization of quicksort that partitions the input into many pieces, is known as the best practical comparison based sorting algorithm for distributed memory parallel computers. We show that sample sort is also useful on a single processor. The main algorithmic insight is that element comparisons can be decoupled from expensive conditional branching using predicated instructions. This transformation facilitates optimizations like loop unrolling and software pipelining. The final implementation, albeit cache efficient, is limited by a linear number of memory accesses rather than the $\Oh{n\log n}$ comparisons. On an Itanium 2 machine, we obtain a speedup of up to \maxspeedup\ over \texttt{std::sort} from the GCC STL library, which is known as one of the fastest available quicksort implementations.

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Language(s): eng - English
 Dates: 2005-04-222004
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 231973
Other: Local-ID: C1256428004B93B8-E4F96CEBBF2BAD22C1256FA9004A988A-SandersWinkel2004
 Degree: -

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Title: Untitled Event
Place of Event: Bergen, Norway
Start-/End Date: 2004-09-14

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Title: Algorithms – ESA 2004: 12th Annual European Symposium
Source Genre: Proceedings
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Publ. Info: Berlin, Germany : Springer
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 784 - 796 Identifier: ISBN: 3540230254

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Title: Lecture Notes in Computer Science
Source Genre: Series
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Pages: - Volume / Issue: 3221 Sequence Number: - Start / End Page: - Identifier: -