Improved utilization and responsiveness with gang scheduling

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Description

Most commercial multicomputers use space-slicing schemes in which each scheduling decision has an unknown impact on the future: should a job be scheduled, risking that it will block other larger jobs later, or should the processors be left idle for now in anticipation of future arrivals? This dilemma is solved by using gang scheduling, because then the impact of each decision is limited to its time slice, and future arrivals can be accommodated in other time slices. This added flexibility is shown to improve overall system utilization and responsiveness. Empirical evidence from using gang scheduling on a Cray T3D installed ... continued below

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26 p.

Creation Information

Feitelson, D.G., & Jette, M.A. October 1, 1996.

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  • Feitelson, D.G., Institute of Computer Science, The Hebrew University of Jerusalem (IsraelL)
  • Jette, M.A. Lawrence Livermore National Lab., CA (United States)

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Description

Most commercial multicomputers use space-slicing schemes in which each scheduling decision has an unknown impact on the future: should a job be scheduled, risking that it will block other larger jobs later, or should the processors be left idle for now in anticipation of future arrivals? This dilemma is solved by using gang scheduling, because then the impact of each decision is limited to its time slice, and future arrivals can be accommodated in other time slices. This added flexibility is shown to improve overall system utilization and responsiveness. Empirical evidence from using gang scheduling on a Cray T3D installed at Lawrence Livermore National Lab corroborates these results, and shows conclusively that gang scheduling can be very effective with current technology. 29 refs., 10 figs., 6 tabs.

Physical Description

26 p.

Notes

OSTI as DE97052057

Source

  • IPPS `97: international parallel processing symposium, Geneva (Switzerland), 1-5 Apr 1997

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Identifier

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  • Other: DE97052057
  • Report No.: UCRL-JC--125614
  • Report No.: CONF-970477--3
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/490476 | External Link
  • Office of Scientific & Technical Information Report Number: 490476
  • Archival Resource Key: ark:/67531/metadc675997

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • October 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Feb. 23, 2016, 1:44 p.m.

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Feitelson, D.G., & Jette, M.A. Improved utilization and responsiveness with gang scheduling, report, October 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc675997/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.