Assigning logical cores in VMware or Parallels

Discussion in 'MacBook Pro' started by Dozerrox, May 7, 2010.

  1. Dozerrox macrumors 6502

    Dec 23, 2009
    Hi, couldn't find a relevant thread to ask the question. On the new MacBook Pros, when you assign a core to a virtual machine, does it make use of both the physical core and the logical one for each OS?

  2. dyn macrumors 68030

    Aug 8, 2009
    You can't assign a core to a vm or to VMware Fusion/Parallels. You can only add virtual cpu's so you can test and use smp in a vm. If you want to use more then 1 virtual cpu in a vm you need to have twice the amount of physical cpu's/cores. That would mean that in the MBP you can only have 1 virtual cpu because it only has 2 physical cores. There are 4 logical cores with the i5 and i7 models because they use hyperthreading. It is still unknown if you can use the logical cores with virtualisation software on the Mac. Even VMware doesn't really know, they'll have to test it.

    In short, the answer is "no".

Share This Page