64 bit kernal mode on Mac 3,1

Question

Level 1

0 points

64 bit kernal mode on Mac 3,1

I have a Mac Pro 3,1 running OS X 10.8.5. Recently I installed a new NVIDIA GeForce GTX 680 Mac graphic card and more ram (now 18 gigs) so I can run DaVinci Resolve. Part of the set up requirements include booting up in 64 bit kernel mode.

Mac paper: http://support.apple.com/kb/HT3773 describes the sudo command to accomplish this. My playback is still slow so I'm trying to eliminate possible causes.

How do I check to see if I'm now in 64 bit kernel mode? Thanks.

Mac Pro, Mac OS X (10.6.8)

Posted on Sep 19, 2013 9:45 AM

Reply

Answer 1

The hatter

Level 9

60,990 points

Sep 19, 2013 10:02 AM in response to editortab

The arrangement of disk and files. Use of SSDs for audio and separate one for system.

SSD have very very low seeks and latency that help a lot

Make sure everything you use is also 64-bit mode, so drivers and extensions, plugins, and apps are. You just increased the address space any task can address and can get 10-15% improvement in some cases.

http://support.apple.com/kb/HT4287

Reply

Answer 2

Linc Davis

Level 10

209,547 points

Sep 19, 2013 11:43 AM in response to editortab

How do I check to see if I'm now in 64 bit kernel mode?

You don't have to check. The 10.8 kernel is 64-bit only.

Reply