alice-teacher Crashing on "older" apple computers.

[Vanderhyde, James]

Jeremy,

I think you are seeing two different problems. The 2015 iMac should not have any problem with Alice 3. (Are you using Alice 3?) I currently use a 2014 MacBook Pro for Alice 3 all the time. There are occasional crashes but nothing that severe. I guess there must be something wrong with the installation.

I don’t know about the 2010 MacBook Air. I don’t have any Macs that old to try. I had a 2012 MacBook Air a long time ago. I wasn’t using Alice 3 in those days in class, but I’m sure I tried it out at some point with that computer and didn’t see any problems.

James
—
James Vanderhyde
Associate Professor
Computer Science
Saint Xavier University
3700 W. 103rd St.
Chicago, IL 60655
773-298-3454

On Oct 6, 2021, at 4:44 PM, Jeremy Woodward via alice-teachers <alice-teachers at lists.andrew.cmu.edu<mailto:alice-teachers at lists.andrew.cmu.edu>> wrote:

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Hi Alice 3D instructors,

Does anyone here use Apple computers with Alice? I’ve seen crashes happen when certain objects are added - especially when “too many” items are in a scene.

I can’t quite pen down why it happens.  I know a student with a 2010 MacBook Air had to limit the scene to about 3 items otherwise a 4th one would get the “Queen of Hearts Exception”. A student with a 2015 iMac would crash if any bi-pedal object was added.

My guess is that there is a specific memory limit esp on Apple computers for Alice. The only requirement on Alice’s page is a 1GB ram video card.  A 2010 MacBook Air only had 256MB of Video memory, so maybe that’s why?

Thanks!

Jeremy
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