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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.
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 ?