Lazy decomposition: A novel technique to control parallel task granularity

Suntae Hwang; Hojung Cha

doi:10.1109/ICAPP.1997.651511

Lazy decomposition: A novel technique to control parallel task granularity

Suntae Hwang, Hojung Cha

Department of Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper introduces a new mechanism for the exposure of large grain parallelism. The scheme performs lazy task creation; inlining all tasks provisionally and extracting parallelism from the inlined information later on demand. However, unlike other mechanisms, the further task demand is satisfied by the next evaluation stream rather than retrospectively reversing the inlining decision of the current stream. The scheme is called lazy decomposition because decomposition itself is throttled rather than just the extraction of a task. Lazy decomposition makes the serial section clearly separated from the parallel section in an evaluation tree for a particular function, and this allows the serial section to adopt a sequential algorithm. The performance improvement is significant in divide-and-conquer applications by adoption of sequential algorithms.

Original language	English
Title of host publication	1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997
Editors	Wanlei Zhou, Andrzej Goscinski, Michael Hobbs
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	427-434
Number of pages	8
ISBN (Electronic)	0780342291, 9780780342293
DOIs	https://doi.org/10.1109/ICAPP.1997.651511
Publication status	Published - 1997
Event	3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997 - Melbourne, Australia Duration: 1997 Dec 10 → 1997 Dec 12

Publication series

Name	1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997

Other

Other	3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997
Country/Territory	Australia
City	Melbourne
Period	97/12/10 → 97/12/12

Bibliographical note

Publisher Copyright:
© 1997 IEEE.

All Science Journal Classification (ASJC) codes

Computer Networks and Communications
Hardware and Architecture
Signal Processing

Access to Document

10.1109/ICAPP.1997.651511

Cite this

Hwang, S., & Cha, H. (1997). Lazy decomposition: A novel technique to control parallel task granularity. In W. Zhou, A. Goscinski, & M. Hobbs (Eds.), 1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997 (pp. 427-434). [651511] (1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICAPP.1997.651511

Hwang, Suntae ; Cha, Hojung. / Lazy decomposition : A novel technique to control parallel task granularity. 1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997. editor / Wanlei Zhou ; Andrzej Goscinski ; Michael Hobbs. Institute of Electrical and Electronics Engineers Inc., 1997. pp. 427-434 (1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997).

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title = "Lazy decomposition: A novel technique to control parallel task granularity",

abstract = "This paper introduces a new mechanism for the exposure of large grain parallelism. The scheme performs lazy task creation; inlining all tasks provisionally and extracting parallelism from the inlined information later on demand. However, unlike other mechanisms, the further task demand is satisfied by the next evaluation stream rather than retrospectively reversing the inlining decision of the current stream. The scheme is called lazy decomposition because decomposition itself is throttled rather than just the extraction of a task. Lazy decomposition makes the serial section clearly separated from the parallel section in an evaluation tree for a particular function, and this allows the serial section to adopt a sequential algorithm. The performance improvement is significant in divide-and-conquer applications by adoption of sequential algorithms.",

author = "Suntae Hwang and Hojung Cha",

note = "Publisher Copyright: {\textcopyright} 1997 IEEE.; 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997 ; Conference date: 10-12-1997 Through 12-12-1997",

year = "1997",

doi = "10.1109/ICAPP.1997.651511",

language = "English",

series = "1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "427--434",

editor = "Wanlei Zhou and Andrzej Goscinski and Michael Hobbs",

booktitle = "1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997",

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Hwang, S & Cha, H 1997, Lazy decomposition: A novel technique to control parallel task granularity. in W Zhou, A Goscinski & M Hobbs (eds), 1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997., 651511, 1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997, Institute of Electrical and Electronics Engineers Inc., pp. 427-434, 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997, Melbourne, Australia, 97/12/10. https://doi.org/10.1109/ICAPP.1997.651511

Lazy decomposition : A novel technique to control parallel task granularity. / Hwang, Suntae; Cha, Hojung.

1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997. ed. / Wanlei Zhou; Andrzej Goscinski; Michael Hobbs. Institute of Electrical and Electronics Engineers Inc., 1997. p. 427-434 651511 (1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AB - This paper introduces a new mechanism for the exposure of large grain parallelism. The scheme performs lazy task creation; inlining all tasks provisionally and extracting parallelism from the inlined information later on demand. However, unlike other mechanisms, the further task demand is satisfied by the next evaluation stream rather than retrospectively reversing the inlining decision of the current stream. The scheme is called lazy decomposition because decomposition itself is throttled rather than just the extraction of a task. Lazy decomposition makes the serial section clearly separated from the parallel section in an evaluation tree for a particular function, and this allows the serial section to adopt a sequential algorithm. The performance improvement is significant in divide-and-conquer applications by adoption of sequential algorithms.

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Hwang S, Cha H. Lazy decomposition: A novel technique to control parallel task granularity. In Zhou W, Goscinski A, Hobbs M, editors, 1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997. Institute of Electrical and Electronics Engineers Inc. 1997. p. 427-434. 651511. (1997 3rd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 1997). https://doi.org/10.1109/ICAPP.1997.651511

Lazy decomposition: A novel technique to control parallel task granularity

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