[clausb]

I don't know anything about Inventor, so I'll focus on CoCreate Modeling only.

We've been shipping a 64-bit version of CoCreate Modeling for a number of years now, and I haven't heard of any significant issues with it. There may be the occasional driver here and there which you won't be able to get for 64-bit systems, but this problem will affect all CAD apps, not just CoCreate Modeling.

I cannot disclose any detail information, but we have customers who work with the 64-bit version and design models which are probably just as complex as ships.

Over the past several releases, we've been adding multithreading support to several important functionality areas (examples: rendering, graphics, drawing generation). Over time, we expect even more functionality to take advantage of multi-core systems.