PICO: An Object-Oriented Framework for Branch and Bound

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Description

This report describes the design of PICO, a C++ framework for implementing general parallel branch-and-bound algorithms. The PICO framework provides a mechanism for the efficient implementation of a wide range of branch-and-bound methods on an equally wide range of parallel computing platforms. We first discuss the basic architecture of PICO, including the application class hierarchy and the package's serial and parallel layers. We next describe the design of the serial layer, and its central notion of manipulating subproblem states. Then, we discuss the design of the parallel layer, which includes flexible processor clustering and communication rates, various load balancing mechanisms, ... continued below

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Medium: P; Size: 64 pages

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ECKSTEIN,JONATHAN; HART,WILLIAM E. & PHILLIPS,CYNTHIA A. December 1, 2000.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 27 times . More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

This report describes the design of PICO, a C++ framework for implementing general parallel branch-and-bound algorithms. The PICO framework provides a mechanism for the efficient implementation of a wide range of branch-and-bound methods on an equally wide range of parallel computing platforms. We first discuss the basic architecture of PICO, including the application class hierarchy and the package's serial and parallel layers. We next describe the design of the serial layer, and its central notion of manipulating subproblem states. Then, we discuss the design of the parallel layer, which includes flexible processor clustering and communication rates, various load balancing mechanisms, and a non-preemptive task scheduler running on each processor. We describe the application of the package to a branch-and-bound method for mixed integer programming, along with computational results on the ASCI Red massively parallel computer. Finally we describe the application of the branch-and-bound mixed-integer programming code to a resource constrained project scheduling problem for Pantex.

Physical Description

Medium: P; Size: 64 pages

Notes

OSTI as DE00771506

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  • Other Information: PBD: 1 Dec 2000

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  • Report No.: SAND2000-3000
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/771506 | External Link
  • Office of Scientific & Technical Information Report Number: 771506
  • Archival Resource Key: ark:/67531/metadc717608

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Office of Scientific & Technical Information Technical Reports

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  • December 1, 2000

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 11, 2016, 8:10 p.m.

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ECKSTEIN,JONATHAN; HART,WILLIAM E. & PHILLIPS,CYNTHIA A. PICO: An Object-Oriented Framework for Branch and Bound, report, December 1, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc717608/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.