| R12 project file in R13 with dynamics
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 | R12 project file in R13 with dynamics
by Mike Throck on Jul 16, 2012 at 7:54:17 pm |
I've opened an older project that I made in R12, in R13. The dynamics simulations are way off from where they we're in R12.
Were there changes to the dynamics systems in the update that would cause this?
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• | | | |  | Re: R12 project file in R13 with dynamics
by Brian Jones on Jul 17, 2012 at 3:57:46 am |
not that I know of (Adam or someone might know better). Have you changed the computer (particularly the processor) in that time as well?
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• | | | | | Re: R12 project file in R13 with dynamics
by Mike Throck on Jul 17, 2012 at 5:42:17 am |
Both have changed, older 8 core model to new 12 core.
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• | | | | | Re: R12 project file in R13 with dynamics
by Brian Jones on Jul 17, 2012 at 2:03:36 pm |
all simulations that require semi-random calculations change when you change the processors, differences in the floating point units (mostly) are responsible. It's the reason you should be using all the same chips in a render farm.
You moved from Xeon to Xeon but it's still a change of processor generation and it's doubtful (impossible) they would be the same. If you can use the old machine still you could bake the dynamics there and render on the new one.
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• | | | | | Re: R12 project file in R13 with dynamics
by Mike Throck on Jul 17, 2012 at 6:07:26 pm |
Good info, thanks. I have a rigid body breaking a shattered ground plane for an animation I did last year. Now my boss is having me go back and add to it, but the ground barely moves at all in R13.
Not a big problem, I just increased the mass of the rigid body and it works again. Thanks for the input.
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