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  • 标题:F -- : A Parallel Extension to Cray Fortran
  • 本地全文:下载
  • 作者:Robert W. Numrich
  • 期刊名称:Scientific Programming
  • 印刷版ISSN:1058-9244
  • 出版年度:1997
  • 卷号:6
  • 期号:3
  • 页码:275-284
  • DOI:10.1155/1997/503896
  • 出版社:Hindawi Publishing Corporation
  • 摘要:

    F -- is a parallel extension to Cray Fortran 77 for distributed memory computers. It adds exactly one new symbol to the language, a vertical line that separates two sets of indices. The first set contains the coordinates for data in a local data grid. The second set contains the coordinates for processors in a global processor grid. A statement such as x(i,j)=y(i,j| p,q) generates a load from remote address y(i,j) in the data grid on processor (p,q) followed by a store to local address x(i,j) in the local data grid. F -- syntax requires an explicit statement of the relationship between data layout and processor layout. It assumes that good performance on a distributed memory computer requires the programmer to understand and to exploit data locality. Programmers use the F -- syntax only when it is needed. 0therwise all data are local and all code is local. Compiler and library developers concentrate on generating well-optimized local code.

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