> ...until they are slower, because GPU's latency hiding mechanism (with occupancy) hides load latencies very well, while CPU just stalls the pipeline on every cache miss for ungodly amounts of time...
Is the GPU latency hiding mechanism equivalent to SMT/Hyperthreading, but with more threads per physical core? Or is there more machinery?
Also, how akin GPUs "stream multiprocessors"/cores are to CPUs ones at the microarchitectural level? Are they out-of-order? Do they do register renaming?
> ...until they are slower, because GPU's latency hiding mechanism (with occupancy) hides load latencies very well, while CPU just stalls the pipeline on every cache miss for ungodly amounts of time...
Is the GPU latency hiding mechanism equivalent to SMT/Hyperthreading, but with more threads per physical core? Or is there more machinery?
Also, how akin GPUs "stream multiprocessors"/cores are to CPUs ones at the microarchitectural level? Are they out-of-order? Do they do register renaming?