scksz

When running LLNL VisIt based OpenGL on HD4870x2, whether corssfire tech will improve performance

Discussion created by scksz on Mar 5, 2011
Crossfire tech improve performance for MESA OpenGL programming? A HD 4870x2 can used like two cards on Linux?

I run LLNL VisIt 2.2.0 programming based MESA OpenGL with one HD4870x2 graphic card on Redhat ES 5.3. I want to know when crossfire is open, 1 GPU or 2 GPU work for this OpenGL programming?

And I try to modify xorg.conf, that contain of two Layout( named L1 and L2) and each use different one of HD4870x2's GPUs. from this xorg.conf, the systerm seems like have 2 card. But when VisIt call "xinit -- -layout L1" and "xinit -- -layout L2" at the same time, the system is down immidiately.

If I want to use one HD4870x2 like two grapyic card in order to aollowing VisIt call "xinit -- -layout L1" and "xinit -- -layout L2" at the same time, how can I configure my HD4870x2 and how modify xorg.conf? If when I run aticonfig cmd, I must add some special parameters?

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