Scripted HTML version of Foils prepared 27 December 1996

Foil 5 Introduction to Fortran90 Arrays - II

From CPS615-Introduction to F90 Features, Rationale for HPF and Problem Architecture Delivered Lectures of CPS615 Basic Simulation Track for Computational Science -- 24 September 96. by Geoffrey C. Fox *
Secs 305.2
Extract sections (subarrays) of arrays as u(lb:ub:step)
  • lb is Lower Bound
  • ub is Upper Bound
  • step (defaults to 1) is step
masked (conditional) Array operations using WHERE .... ELSEWHERE
Can still do Fortran77 array element operations (DO Loops) but of course this might not be interpretable for efficient parallelism by HPF compiler
Note Fortran90 designed for science and engineering with originally special concern for vector supercomputers but Cray supports F77 better than F90(!)

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