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Raistmer
Adept II
‎06-06-2010 01:03 PM

Enumeration order for Brook & OpenCL devices

What if HD3xxx installed with 4/5xxx GPUs ?

My app uses both Brook device and OpenCL device.
What if some older ATI GPUs are installed together with OpenCL-compatible ones?
How Brook-reported device number will related with OpenCL-reported device number for the same GPU ?
What the correct way in this case to chose same device for OpenCL and Brook parts of program ?
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omkaranathan
Adept I
‎06-08-2010 09:08 AM

In OpenCL, you need to provide the device id instead of the device number as in Brook. And you are deciding which device to use at context creation. 

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Raistmer
Adept II
‎06-08-2010 09:24 AM

Well, device IDs are ordered in list when returned for use. My question was - how order of reported devices for OpenCL enumeration call relates to order of reported devices for Brook enumeration call.
In other words: Let say I have 2 different GPU cards, card A and card B. How can I ensure that application uses same card (card B for example) for both OpenCL and Brook+ parts ?
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