Forum Replies Created

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  • Steven Nichols

    October 1, 2010 at 8:37 pm in reply to: CS5 multiprocessing on a 12-core Mac Pro

    Some comps render as twice as fast without MP. This is ridiculous 🙁 I am wondering if I really need a 12-core!!

  • Steven Nichols

    October 1, 2010 at 8:33 pm in reply to: CS5 multiprocessing on a 12-core Mac Pro

    I have an 8 core hyper-threaded mac pro.
    I find it generally works best when I set the maximum ram allocation per CPU,
    and restrict it to using no more than the number of real (not virtual) cores – 2.
    In my case 6, in your case 10.

    I tried that and I don’t see any difference with or without MP!!

  • Steven Nichols

    October 1, 2010 at 6:09 pm in reply to: CS5 multiprocessing on a 12-core Mac Pro

    OK I’ll try that. But could you explain me why I see 24 installed CPUs when I only have a 12-core machine ?

  • Steven Nichols

    October 1, 2010 at 6:02 pm in reply to: CS5 multiprocessing on a 12-core Mac Pro

    Do you set MP in the Memory & Multiprocessing prefs only… or is there anything else ? Besides what are the best settings ?

  • Steven Nichols

    October 1, 2010 at 5:57 pm in reply to: CS5 multiprocessing on a 12-core Mac Pro

    I tried all of those but none worked.
    I did a 20 sec test comp with just a moving text with a animated gaussian blur.
    Rendering times are:
    – 1min14sec with MP enabled (actual CPU: 20- RAM per CPU: 2 GB) The render bar seems to slow down every 10 sec or so, then goes again, ect.
    – 34 secs without MP enabled
    It does not make any sense!

  • Steven Nichols

    October 1, 2010 at 2:38 pm in reply to: CS5 multiprocessing on a 12-core Mac Pro

    AE CS5 requires a 64-bit operating system (which gives it access to RAM above 4 GB), but it doesn’t require the kernel to be running in 64-bit mode.
    Well that’s good news! So that’s why I don’t see any difference with a 32-bit and 64-bit kernel.

    How much RAM do you have? What effects are you trying to render?
    48 GB.
    I rendered a bunch a projects (Brian Maffit’s bench, some particular, some basic text and blur…)
    I don’t get it: why is MP rendering slower ?

  • Steven Nichols

    September 8, 2010 at 5:27 pm in reply to: New Mac Pro advice

    OK thanks yall. I am now ready to order the 12×2.93 cores, ATI 5870 and I think 32 GB of RAM.
    I will post some tests when I’ll get this monster.

  • Steven Nichols

    September 8, 2010 at 4:22 pm in reply to: New Mac Pro advice

    I would need to clarify something. I know right now FCP is 32-bit so I am aware of the 4 GB RAM limitation. But I was told today that a 12-core machine will use all them cores for rendering in FCP. So after all a 12-core should be a good choice for FCP ?

  • Steven Nichols

    September 8, 2010 at 4:05 pm in reply to: New Mac Pro advice

    Thanks again. So what would be the benefits or the ATI 5870 over the 5770 ?

  • Steven Nichols

    September 8, 2010 at 3:53 pm in reply to: New Mac Pro advice

    I thought you would get an improvement with Open GL regarding previews in After Effects ?
    I was thinking about the nVidia GeForce GTX 285…

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