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Conference papers

Communication Pre-evaluation in HPF

Pierre Boulet 1, 2, * Xavier Redon 1 
* Corresponding author
2 DART - Contributions of the Data parallelism to real time
LIFL - Laboratoire d'Informatique Fondamentale de Lille, Inria Lille - Nord Europe
Abstract : 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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Submitted on : Friday, February 11, 2011 - 10:39:56 AM
Last modification on : Wednesday, March 9, 2022 - 12:08:06 PM


  • 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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