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by DrPizza
5318 days ago
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My understanding is that it can give every cycle to a given thread just as long as the other thread doesn't need it to decode anything (if it's idle or whatever). i.e. it can give one thread 4 ops/cycle sustained, given the right workload. But for your purposes, that's probably not any improvement. |
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Dispatch can only do 2 loads per cycle, and 1 store per cycle. Any more, and it stops on that instruction and dispatches nothing more for that cycle. On plenty of workloads, especially typical compiler output for C code, this is not going to nearly reach the 4 ops/cycle maximum, even on a single thread.