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发表于 2008-7-18 13:31:03
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[quote]Thanks guys!
What I would like to know, is how CPU intensive is this? I am imagining the GPU is doing most the work. A core is tied up with it but not running 100% like we do with "traditional" projects.
Actually the application uses also one core of the CPU to 100% plus the GPU as coprocessor...
I really can't say how important the CPU speed is for the GPU application, but earlier test have shown that if the app uses only 50% of a CPU core, the WUs were a good bit slower.
Would be interesting to see some comparisons with the same graphics cards but other CPUs in the thread you started...[/quote]
The CPU is not important at all. It appears to be using 100% of resources just because it is polling waiting for the accelerated kernel to finish.
So, any CPU should do.
We have built a machine with 6 GPU cores by putting together 3 Geforce 9800 GX2, a power supply of 1200W, an Nvidia 780i motherboard with 3 PCI-E 16x slots and a quad core CPU.
We are looking into building another one with Geforce 280.
说是CPU完全不重要,看来可以CPU+GPU全速飙了~~
// 也可能是说总归要占用一个CPU,而不管那个CPU是好是差。。。 |
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