Mac Pro 3.2G Quad - 8 CPUs

[Siegfried Meier]

Hey guys,

We bought a new Mac Pro this past July, and for the longest time I'd only be able to select 4 CPU's when running TDM.

However, today I was playing around and doing some tests. When I turned off the 192's and ran purely native, I suddenly realized I could now select 8 CPU's in the Playback Engine window. After closing Pro Tools and opening it up in TDM again, the 8 CPU's are now available there as well...is this some kind of a weird bug?

It now feels like I got a 2nd computer attached haha. What in the hell? I went for nearly 5 months without figuring this out...

Sig

[crizdee]

Originally Posted by Siegfried Meier

Hey guys,

We bought a new Mac Pro this past July, and for the longest time I'd only be able to select 4 CPU's when running TDM.

However, today I was playing around and doing some tests. When I turned off the 192's and ran purely native, I suddenly realized I could now select 8 CPU's in the Playback Engine window. After closing Pro Tools and opening it up in TDM again, the 8 CPU's are now available there as well...is this some kind of a weird bug?

It now feels like I got a 2nd computer attached haha. What in the hell? I went for nearly 5 months without figuring this out...

Sig

Hi,

That is bizarre!! if you had of said you only had 4 CPU's i would have said the computer had a hardware fault and nothing to do with pro tools. but you think switching to native suddenly made the 4 CPU's jump into life? well, stranger things have happened, but I've never seen anything like that before.



chris

[Siegfried Meier]

Me neither!! But, it'd been this way since July when we got it...

It must have simply been a bug in software, but I'm glad I looked into it further haha. I'm now able to actually use it!!

Thanks,
Sig

[peterle]

there are still only 4 hardware cores , if you have a 1 cpu model.
the cpu s since nehalem (macpro2009)have 4 hardware + 4 "virtual" cores..
the reason you see 8 cores.
In fact not double the performance but
at least a plus of 20% cpu performance.
i have a 2 cpu nehalem and
see 16 cores btw....
but there are still only 4 hardware cores and as that you
should handle it.
the "law" 1 core less then available for PT means here:
6 cores for PT , 2 cores for OS and rest.

regards