[SGVLUG] the "ultimate build of the month"...

[Matthew Campbell]

Good point.  I had the devil of a time getting the graphics drivers
installed for my high end cards under CentOS non-virtual so I didn't even
try doing so under Xen. From my experience I would not recommend it.

Matt

On Sep 27, 2010 4:22 PM, "John E. Kreznar" <jek at ininx.com> wrote:

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In a posting purporting to be from Thomas Emerson
<starman9x at gmail.com> but lacking a digital signature, it is written


> has anyone done any video work on vitrualized hardware? Is it
> (sufficiently) doable, or is thi...
I've been delighted with Xen on my Super Micro 5036T-T with X8SAX
motherboard, but I don't do any video editing.

Modern hardware with virtual support has IOMMU, allowing passthrough
of some peripheral devices to virtual machines with only a negligible
performance hit.  IOMMU is called "VT-d" by Intel.  AMD was not yet
shipping when I shopped early this year.

I'm using IOMMU passthrough for other things, but not yet for video.
Here's a snippet from Usenet newsgroup gmane.comp.emulators.xen.user
last week that gives something of the current flavor of video
passthrough with Xen:

  At present, Xen 4.0.1 only supports Intel integrated graphics (IGD)
  VGA passthrough.  Add-on PCI Express x16 graphics cards are not
  supported yet.  Patches, which are currently unavailable, have to
  be applied to Xen 4.0.1.  You may wish to passthrough your onboard
  VGA instead of your NVIDIA GeForce GTS display card.

Hope this helps.

- --
 John E. Kreznar jek at ininx.com 9F1148454619A5F08550 705961A47CC541AFEF13

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