Toward Fortran 77 performance from object-oriented C++ scientific frameworks

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The use of object-oriented C{sup 2} frameworks has significantly simplified the development of numerous complex parallel scientific applications at Los Alamos National Laboratory and elsewhere. In spite of considerable use of, and commitment to, these frameworks, concerns about performance are nonetheless a significant issue; performance very close to that of FORTRAN 77 with message passing must be realized before the acceptance and use of such frameworks will be truly widespread. This paper identifies the primary source of inefficiency in using C or C{sup 2} for numerical codes with stencil- or stencil-like operations, and demonstrates two solutions--one portable, one not--to give ... continued below

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8 p.

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Bassetti, F.; Davis, K. & Quinlan, D. December 1, 1998.

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The use of object-oriented C{sup 2} frameworks has significantly simplified the development of numerous complex parallel scientific applications at Los Alamos National Laboratory and elsewhere. In spite of considerable use of, and commitment to, these frameworks, concerns about performance are nonetheless a significant issue; performance very close to that of FORTRAN 77 with message passing must be realized before the acceptance and use of such frameworks will be truly widespread. This paper identifies the primary source of inefficiency in using C or C{sup 2} for numerical codes with stencil- or stencil-like operations, and demonstrates two solutions--one portable, one not--to give genuine FORTRAN 77 performance.

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8 p.

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OSTI as DE99000679

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  • High performance computing `98, Boston, MA (United States), 5-9 May 1998

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  • Other: DE99000679
  • Report No.: LA-UR--98-260
  • Report No.: CONF-980509--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 291104
  • Archival Resource Key: ark:/67531/metadc675819

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  • December 1, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 3, 2016, 1:38 p.m.

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Bassetti, F.; Davis, K. & Quinlan, D. Toward Fortran 77 performance from object-oriented C++ scientific frameworks, article, December 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc675819/: accessed January 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.