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Why GCN architecture is better than VLIW4?

Question asked by liquid on May 10, 2013
Latest reply on May 11, 2013 by liquid

I understand that may be dependance between many wavefronts. But, while GCN can switch wavefronts dynamically between SIMDS, I don't understand why VLIW4 can't do this. In case this does not happen because VLIW4 is lack of buffers, queues or other hardware capable to handle the dynamic switching, why AMD did not add a buffer/queue/other harware instead of changing the entire architecture?


Thank you.