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Old Feb 28, 2011, 01:56 PM   #1
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erek
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Multi-GPU Graphics Technology Lucid Virtu GPU Virtualization Software Review - Sandy Bridge and Discrete coexist

Lucid says that its Virtu software performs "GPU Virtualization" technology in order to achieve what it does. That term might not make a lot sense as it's stated but in many ways this software was aided by the work Lucid did on HYDRA.

The Lucid Virtu software is a layer that actually rests below any discrete or integrated graphics driver and just above the DirectX layer. This allows the software to intercept calls to specific executable files and assign those commands to a specific GPU. One note here though is that currently only DirectX games are supported - OpenGL is not compatible with this software solution.

To be sure, this is a completely software based solution - no Lucid or other vendors hardware (other than both a Sandy Bridge processor and discrete GPU) are required for it work. The HYDRA technology that Lucid also offers for discrete GPU scaling enhancements does require both a hardware and software implementation; Virtu does not share that trait.

This abstraction layer is responsible for sending individual tasks to either discrete or processor graphics as well as merging them back again into a common frame buffer. The flow diagram below shows that for game running on the discrete GPU, the resulting images are actually sent to the frame buffer of Intel's HD 3000/2000 graphics rather than to the cards own frame buffer. This is allows the Intel display outputs to properly display the workloads being rendered on BOTH GPUs.

Other tasks like general Windows usage, video and web applications are still run through the Intel HD 3000/2000 graphics cores since they are definitely more efficient than the large power hungry discrete cards.

(please visit the source link for much more detailed information)...


Source: PC Perspective
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Old Feb 28, 2011, 03:40 PM   #2
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So...this allows D3D games to run inside a VM?
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Old Feb 28, 2011, 03:56 PM   #3
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So...this allows D3D games to run inside a VM?
No.

GPU Virtualization is a misleading term, this should be 'GPU abstraction'.
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Old Feb 28, 2011, 07:21 PM   #4
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Quote:
Originally Posted by caveman-jim View Post
No.

GPU Virtualization is a misleading term, this should be 'GPU abstraction'.
can't D3D games be run through a VM via IOMMU support?
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Old Feb 28, 2011, 10:41 PM   #5
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http://en.wikipedia.org/wiki/IOMMU#I...virtualization


??? can't it lead to hardware accelerated d3d virtualization?
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