Numerical weather prediction on the supercomputer toolkit

Pinhas Alpert, Alexander Goikhman, Jacob Katzenelson, Marina Tsidulko

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The Supercomputer Toolkit constructs parallel computation networks by connecting processor modules. These connections are set by the user prior to a run and are static during the run. The Technion's Toolkit prototype was used to run a simplified version of the PSU/NCAR MM5 mesoscale model [9]. Each processor is assigned columns of the grid points of a square in the (x,y) space. When n x n columns are assigned to each processor its computation time is proportional to n 2 and its communication time to n. Since the Toolkit's network computes in parallel and communicates in parallel, then, for a given n, the total time is independent of the size of the two dimensional array or the area over which the weather prediction takes place. A mesoscale forecast over the eastern Mediterranean was run and measured; it suggests that were the Toolkit constructed from ALPHA processors, 10 processors would do a 36 h prediction in only about 13 minutes. A 36 hours prediction with full physics for the whole earth will require 2 hours for 80 ALPHA processors.

Original languageEnglish
Title of host publicationHigh Performance Computing - 4th International Symposium, ISHPC 2002, Proceedings
Number of pages11
StatePublished - 2002
Event4th International Symposium on High Performance Computing, ISHPC 2002 - Kansai Science City, Japan
Duration: 15 May 200217 May 2002

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume2327 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference4th International Symposium on High Performance Computing, ISHPC 2002
CityKansai Science City


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