Runtime system library for parallel finite difference models with nesting

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Description

RSL is a parallel run-time system library for implementing regular-grid models with nesting on distributed memory parallel computers. RSL provides support for automatically decomposing multiple model domains and for redistributing work between processors at run time for dynamic load balancing. A unique feature of RSL is that processor subdomains need not be rectangular patches; rather, grid points are independently allocated to processors, allowing more precisely balanced allocation of work to processors. Communication mechanisms are tailored to the application: RSL provides an efficient high-level stencil exchange operation for updating subdomain ghost areas and interdomain communication to support two-way interaction between nest ... continued below

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43 p.

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Michalakes, J. March 1, 1997.

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Description

RSL is a parallel run-time system library for implementing regular-grid models with nesting on distributed memory parallel computers. RSL provides support for automatically decomposing multiple model domains and for redistributing work between processors at run time for dynamic load balancing. A unique feature of RSL is that processor subdomains need not be rectangular patches; rather, grid points are independently allocated to processors, allowing more precisely balanced allocation of work to processors. Communication mechanisms are tailored to the application: RSL provides an efficient high-level stencil exchange operation for updating subdomain ghost areas and interdomain communication to support two-way interaction between nest levels. RSL also provides run-time support for local iteration over subdomains, global-local index translation, and distributed I/O from ordinary Fortran record-blocked data sets. The interface to RSL supports Fortran77 and Fortran90. RSL has been used to parallelize the NCAR/Penn State Mesoscale Model (MM5).

Physical Description

43 p.

Notes

OSTI as DE97005938

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  • Other Information: PBD: Mar 1997

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  • Other: DE97005938
  • Report No.: ANL/MCS-TM--197
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/471385 | External Link
  • Office of Scientific & Technical Information Report Number: 471385
  • Archival Resource Key: ark:/67531/metadc675289

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  • March 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Dec. 16, 2015, 3:46 p.m.

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Michalakes, J. Runtime system library for parallel finite difference models with nesting, report, March 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc675289/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.