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

N-body problem integration (N=4: one star, one heavy planet and one light planet with a satellite) computed on two 'compatible' computers (the Yellow one and the Cyan one: sensitivity to rounding-off errors) [Intégration du problème des N-corps (N=4: une étoile, une planète lourde et une planète légère avec un satellite) calculé sur deux ordinateurs 'compatibles' (le Jaune et le Cyan: sensibilité aux erreurs d'arrondi)].




The same program is run on two "compatible" computers with exactly the same initial conditions -see bottom left picture-:




There is no difference between this sensitivity to rounding-off errors N-body problem integration (N=4: one star, one heavy planet and one light planet with a satellite)computed on two 'compatible' computers (the Yellow one and the Cyan one: sensitivity to rounding-off errors) and the sensitivity to initial conditions N-body problem integration (N=4: one star, one heavy planet and one light planet with a satellite)computed with 2 slightly different sets of initial conditions (sensitivity to initial conditions) .


(the computations correspond to a physical duration of 65 terrestrial years)


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