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  Duality Between Prefetching and Queued Writing with Parallel Disks

Hutchinson, D. A., Sanders, P., & Vitter, J. S. (2005). Duality Between Prefetching and Queued Writing with Parallel Disks. SIAM Journal on Computing, 34, 1443-1463.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-2651-6 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-2652-4
Genre: Journal Article

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 Creators:
Hutchinson, David A., Author
Sanders, Peter1, Author           
Vitter, Jeffrey S., Author
Affiliations:
1Algorithms and Complexity, MPI for Informatics, Max Planck Society, ou_24019              

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 Abstract: Parallel disks promise to be a cost effective means for achieving high bandwidth in applications involving massive data sets, but algorithms for parallel disks can be difficult to devise. To combat this problem, we define a useful and natural duality between writing to parallel disks and the seemingly more difficult problem of prefetching. We first explore this duality for applications involving read-once accesses using parallel disks. We get a simple linear time algorithm for computing optimal prefetch schedules and analyze the efficiency of the resulting schedules for randomly placed data and for arbitrary interleaved accesses to striped sequences. Duality also provides an optimal schedule for prefetching plus caching, where blocks can be accessed multiple times. Another application of this duality gives us the first parallel disk sorting algorithms that are provably optimal up to lower-order terms. One of these algorithms is a simple and practical variant of multiway merge sort, addressing a question that had been open for some time.

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Language(s): eng - English
 Dates: 2006-06-192005
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 279192
Other: Local-ID: C1256428004B93B8-13E5CCBD19A72115C12571030032CA01-Sanders2005
 Degree: -

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Title: SIAM Journal on Computing
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 34 Sequence Number: - Start / End Page: 1443 - 1463 Identifier: -