click to view the MPEG movie (cliquez pour voir le film MPEG)

Rotation about the X axis of the Lorenz attractor (5000 iterations), computed simultaneously on two different computers [Rotation autour de l'axe X de l'attracteur de Lorenz (5000 itérations), calculée sur deux ordinateurs différents].




The Lorenz differential equation system is solved 128 times for exactly the same initial conditions. Each one of the 128 computations is run either on the computer A or on the computer B, depending of their instaneous work load. Computers A and B are identical except for their system release. To distinguish the 128 different computations, each one has its own point of view (using a 3D rotation applied after the computation). For 1000 iterations (see "Rotation about the X axis of the Lorenz attractor (1000 iterations), computed simultaneously on two different computers"), the resulting animation shows no defect, when for 5000 iterations (see "Rotation about the X axis of the Lorenz attractor (5000 iterations), computed simultaneously on two different computers"), it appears clearly that the two computers did not give the same results.


(CMAP28 WWW site: this page was created on 09/24/1999 and last updated on 01/28/2014 15:55:21 -CET-)



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