Re: vpython after cuda install

As it says on the vpython.org download page, "VPython does not work
with Mac 64-bit Python, but this 32-bit version of Python works fine
on 64-bit Macs." The reason is that VPython is based on Apple's Carbon
environment, which is now deprecated and does not support 64-bit
environments. Graphics applications such as VPython are now supposed
to be built on the newer environment Cocoa. Unfortunately, this seems
to be impossible. David Scherer and I were unable to find a way to use
Cocoa, due to incompatible thread priority issues. Experts on the
Cocoa dev list when asked agreed that there is a big problem.

Bruce Sherwood

On Thu, Sep 22, 2011 at 6:51 AM, Kevin Karplus <karplus-Emgmuai4XwL2fBVCVOL8/[email protected]> wrote:
> I'm using a Mac, and had to reinstall Python 2.7.2 in the 32-bit
> version, because the Mac Vpython would not run with the 64-bit
> version.  I've no idea why.

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