[ODE] processing islands in different order

[Thomas Yeh]

I ran 8 frames, and a quick visual scan shows errors up to ~1cm.

Why should the order affect the floating point inaccuracy? If the islands
are truly independent, I don't see why the ordering will cause different
errors in rounding.

Tom

On Thu, 24 Aug 2006, Megan Fox wrote:

> When you say slightly, how slight do you mean?
>
> Processing the islands in a different order should result in different
> floating point inaccuracies, shouldn't it?  Introducing slight
> irregularities?
>
> On 8/24/06, Thomas Yeh <tomyeh at cs.ucla.edu> wrote:
> > I am seeing the behavior that if islands are processed in a different
> > order than the default ordering, the position data for the objects in the
> > simulation are slightly different. I am using 0.5, and I generate all the
> > islands before I start calling the stepper function.
> >
> > Can anyone explain this behavior? As far as I know, the islands'
> > computations should all be independent right?
> >
> > thx
> >
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>
> --
> -Megan Fox
> Idyllon, LLC
> http://shalinor.circustent.us/megan/resume/
>