12 Core Mac Pro Hangs, Judders, Crashes, Out Of Memory

[John Davidson]

Switch to 32bit kernel. There are pref panes you can instll for this. I used to have at problem but that seemed to solve it. I have the 12 core as well and documented this the first week it came out. I don’t have the problem anymore.

[Brad Walker]

Excellent. Installed a preference pane, however, it didn’t seem to work. So, I went ahead and typed the following command line in the terminal

sudo systemsetup -setkernelbootarchitecture i386

It is 32 bit ready.

THANKS!
I will do some testing and see how it goes!

Brad

[John Davidson]

I have a thread on the apple forums about this. It’s been a while since its happened, but I’ll try to dig it up and post it for your. Good luck!

[Steve Modica]

Have you tried swapping graphics cards between systems? Seems like the next test to run.

Also, it was not clear to me whether you actually moved from a 64 bit kernel to a 32 bit kernel, or if you were already 32 bit (I think that’s the default on mac pros). If you hold down the 6 and 4 keys while powering up, it will try and boot 64 bit.

Steve Modica
CTO, Small Tree Communications

[Brad Walker]

Thanks…yes, I swapped out with a 4870 Radeon…same thing. I also swapped the Mac Pro out with a different one….fixed the _unknown user permissions. Right now, I am in 32 bit — confirmed. Serious testing today. The TWIXTOR plugin is what is causing most of the crashing now.

Brad

[Brad Walker]

Thanks John!

[Brad Walker]

I am now continuing to get hard crashes from twixtor 5.1…booted up in 64 bit…same thing. Any ideas??

[David Roth weiss]

[Brad Walker] “I am now continuing to get hard crashes from twixtor 5.1…booted up in 64 bit…same thing. Any ideas??”

Uninstall Twixtor…

David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
https://www.drwfilms.com

POST-PRODUCTION WITHOUT THE USUAL INSANITY ™

A forum host of Creative COW’s Business & Marketing and Apple Final Cut Pro forums. Formerly host of the Apple Final Cut Basics, Indie Film & Documentary, and Film History & Appreciations forums.

[Brad Walker]

I did that and reinstalled…unfortunately, the 15 minute project that is due very soon has twixtor all over it. Any reasons/conflicts for the crash on this new computer? Does twixtor not like the 12 core?

Thanks!
Brad

[John Davidson]

Here Brad, there are more people going through this here….
https://discussions.apple.com/thread.jspa?threadID=2577758&tstart=0
Do you have a Kona 3 installed with the latest software? One thing I did around the time that I was having problems was downgrading to the 7.5 Kona software.