Nothing Special   »   [go: up one dir, main page]

skip to main content
10.1145/3018743.3019031acmconferencesArticle/Chapter ViewAbstractPublication PagesppoppConference Proceedingsconference-collections
poster
Public Access

POSTER: Provably Efficient Scheduling of Cache-Oblivious Wavefront Algorithms

Published: 26 January 2017 Publication History

Abstract

Standard cache-oblivious recursive divide-and-conquer algorithms for evaluating dynamic programming recurrences have optimal serial cache complexity but often have lower parallelism compared with iterative wavefront algorithms due to artificial dependencies among subtasks. Very recently cache-oblivious recursive wavefront (COW) algorithms have been introduced which do not have any artificial dependencies. Though COW algorithms are based on fork-join primitives, they extensively use atomic operations, and as a result, performance guarantees provided by state-of-the-art schedulers for programs with fork-join primitives do not apply.
In this work, we show how to systematically transform standard cache-oblivious recursive divide-and-conquer algorithms into recursive wavefront algorithms to achieve optimal parallel cache complexity and high parallelism under state-of-the-art schedulers for fork-join programs. Unlike COW algorithms these new algorithms do not use atomic operations. Instead, they use closed-form formulas to compute at what time each recursive function must be launched in order to achieve high parallelism without losing cache performance. The resulting implementations are arguably much simpler than implementations of known COW algorithms.

Reference

[1]
Y. Tang, R. You, H. Kan, J. J. Tithi, P. Ganapathi, and R. A. Chowdhury. Cache-oblivious wavefront: improving parallelism of recursive dynamic programming algorithms without losing cache-efficiency. In PPoPP, pages 205--214, 2015.

Cited By

View all
  • (2017)Impact of synchronization scheme on duty cycling in IEEE 802.15.4 cluster tree networksIECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society10.1109/IECON.2017.8217487(8471-8475)Online publication date: Oct-2017

Recommendations

Comments

Please enable JavaScript to view thecomments powered by Disqus.

Information & Contributors

Information

Published In

cover image ACM Conferences
PPoPP '17: Proceedings of the 22nd ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming
January 2017
476 pages
ISBN:9781450344937
DOI:10.1145/3018743
Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

Sponsors

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 26 January 2017

Check for updates

Author Tags

  1. cache-oblivious
  2. divide-and-conquer
  3. dynamic programming
  4. parallel
  5. recursive wavefront

Qualifiers

  • Poster

Funding Sources

Conference

PPoPP '17
Sponsor:

Acceptance Rates

PPoPP '17 Paper Acceptance Rate 29 of 132 submissions, 22%;
Overall Acceptance Rate 230 of 1,014 submissions, 23%

Contributors

Other Metrics

Bibliometrics & Citations

Bibliometrics

Article Metrics

  • Downloads (Last 12 months)59
  • Downloads (Last 6 weeks)6
Reflects downloads up to 14 Nov 2024

Other Metrics

Citations

Cited By

View all
  • (2017)Impact of synchronization scheme on duty cycling in IEEE 802.15.4 cluster tree networksIECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society10.1109/IECON.2017.8217487(8471-8475)Online publication date: Oct-2017

View Options

View options

PDF

View or Download as a PDF file.

PDF

eReader

View online with eReader.

eReader

Get Access

Login options

Media

Figures

Other

Tables

Share

Share

Share this Publication link

Share on social media