On Mon, 28 May 2012 22:28:26 +0200, Nicolas Boulay wrote:
2012/5/28 Andre Pouliot <[email protected]>:
For shader program the data dependency is low. That's why there is
also more than 8 thread, if one lock and wait for some data you can
still use the pipeline at 100% efficiency. You don't have an empty
time slot some other program use it.
Be carefull this technic did not scale at all. Intel use only 2
threads on P4, because caches efficiency decrease with the number of
threads. If there is too much thread, you will have only cache miss.
AMD instead of duplicate decoder and register bank, duplicate also
the
pipeline, so one of the programme could have the double of ressource
available. It's like you completly separate decoding stage and
pipeline.
hint : GPU != CPU
cheers
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