Assigning multiple CPUs to the guest

Discussions related to using VirtualBox on Mac OS X hosts.
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PeterNosko
Posts: 19
Joined: 7. Dec 2013, 02:49
Primary OS: Mac OS X other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Win7-64

Assigning multiple CPUs to the guest

Post by PeterNosko »

Hi. I'm running VirtualBox 4.2.8 on a Lion Mac Pro and also on a brand-spanking new Mavericks MacBook Pro (max config). On both Macs, if I try to choose more than one CPU, I get this non=optimal warning. The user manual (pages 48-49) do not go into much detail.

Is hardware-level virtualization something I won't find on a Mac? I was preparing to order the new Mac Pro with 12 cores, but if I can't assign more than one core to the VM (in this case, Oracle Linux 5), 12 cores may be overkill for my needs. Could someone enlighten me on this?

Thanks.
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socratis
Site Moderator
Posts: 27329
Joined: 22. Oct 2010, 11:03
Primary OS: Mac OS X other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Win(*>98), Linux*, OSX>10.5
Location: Greece

Re: Assigning multiple CPUs to the guest

Post by socratis »

PeterNosko wrote:if I try to choose more than one CPU, I get this non=optimal warning.
Most probably IO/APIC is not enabled. Did you choose the "Oracle" or the "Oracle (64-bit)" template?
Do NOT send me Personal Messages (PMs) for troubleshooting, they are simply deleted.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
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PeterNosko
Posts: 19
Joined: 7. Dec 2013, 02:49
Primary OS: Mac OS X other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Win7-64

Re: Assigning multiple CPUs to the guest

Post by PeterNosko »

Perfect, thanks.
socratis wrote:Did you choose the "Oracle" or the "Oracle (64-bit)" template?
I imported the Developer Day appliance.
mpack
Site Moderator
Posts: 39134
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Mostly XP

Re: Assigning multiple CPUs to the guest

Post by mpack »

PeterNosko wrote:I imported the Developer Day appliance.
Then please check the settings|General|Version to ensure that the correct OS version has been selected, including the 64bit flag.
PeterNosko
Posts: 19
Joined: 7. Dec 2013, 02:49
Primary OS: Mac OS X other
VBox Version: VirtualBox+Oracle ExtPack
Guest OSses: Win7-64

Re: Assigning multiple CPUs to the guest

Post by PeterNosko »

Yes that is correct. It was just this one setting that wasn't enabled after the import. Thanks.
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