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Conference Papers Year : 1998

Communication Pre-evaluation in HPF


Parallel computers are difficult to program efficiently. We believe that a good way to help programmers write efficient programs is to provide them with tools that show them how their programs behave on a parallel computer. Data distribution is the major performance factor of data-parallel programs and so automatic data layout for HPF programs has been studied by many researchers recently. The communication volume induced by a data distribution is a good estimator of the efficiency of this data distribution. We present here a symbolic method to compute the communication volume generated by a given data distribution during the program writing phase (before compilation). We stay machine-independent to assure portability. Our goal is to help the programmer understand the data movements its program generates and thus find a good data distribution. Our method is based on parametric polyhedral computations. It can be applied to a large class of regular codes.
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inria-00565190 , version 1 (11-02-2011)


  • HAL Id : inria-00565190 , version 1


Pierre Boulet, Xavier Redon. Communication Pre-evaluation in HPF. Euro-Par'98, 1998, Southampton, United Kingdom. pp.263-272. ⟨inria-00565190⟩
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