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Re: Multiple 8800GT's on one machine


On May 29, 2008, at 10:51 AM, Yaron Tadmor wrote:

Thanx for the info.

Just to make sure I understand you, the limit of 2 comes from the fact that there are only 2 power connectors in the machine?

Yes. As Mike mentioned, there are some PCIe lane limitations and the new Mac Pro has 2 16 lane slots. You could put up to 4 graphics cards in the machine, I believe that the Radeon 2600 card's power requirements are such that you can use up to 4 of them. (They will split the PCIe lanes, though, which effects the performance depending on your usage).


Also, will I be able to route my processes to use the cards as I wish?

Yes, you can create your contexts by device, or use the virtual screen APIs to move one context between devices. Start here for more info:

http://developer.apple.com/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_pg_concepts/chapter_2_section_4.html

Kent



thanx
Yaron


From: Kent Miller [mailto:email@hidden]
Sent: Thursday, May 29, 2008 5:29 PM
To: Yaron Tadmor
Subject: Re: Multiple 8800GT's on one machine

You can put 2 in one of the new Mac Pros. They both require external power connectors, and there are only 2 in the machine.

Kent

On May 29, 2008, at 6:43 AM, Yaron Tadmor wrote:


Hi,

Is there a possibility to put multiple 8800GT cards on one Mac?


I want to build an image processing server. Each request will be handled by a separate process on the machine. I thought I could install several graphic cards on one machine and have each process use the most available one to boost performance. Is something like that possible?

Thanx

Yaron Tadmor


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References: 
 >Multiple 8800GT's on one machine (From: "Yaron Tadmor" <email@hidden>)
 >RE: Multiple 8800GT's on one machine (From: "Yaron Tadmor" <email@hidden>)



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