[ODE] Cross-platform woes

Geoff Carlton gcarlton at iinet.net.au
Mon Aug 15 10:16:08 MST 2005


Why do you need the simulation to be strictly identical?  Is it demos, 
network etc? 

There are usually ways around this for both, namely to just send the 
compressed position+orientation for bodies, rather than re-running the 
simulation.

Geoff


Keith Johnston wrote:

>Having finally conquered repeatability on the PC from
>one simulation run to the next, I am now trying to
>make simulations on the PC and Mac run *identically*. 
>I have tried truncating the physical properties to 2
>decimal places, but this has not solved the problem. 
>The same initial conditions on a simulation on the PC
>and the Mac still diverge.
>
>Perhaps the only solution is to give up on Visual C++
>and use gcc on windows - that way at least I'd be
>using the same compiler on both operating systems. 
>Currently we are using Xcode on the Mac and Visual
>Studio on windows.
>
>Has anyone ever gotten exactly the same simulation
>results on both Mac and PC?  How did you do it?
>
>Thanks,
>Keith
>
>
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