Seems we’re in an irrational Trough of Disillusionment re. GPUs, where folks get wrongly ridiculed as naive for even suggesting using them.
Exactly! Though SIMD is still useful for “short bursts” where you don’t want to bother getting the data over
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depends some on CPU; ex: on AMD Bulldozer it seems generally faster to use integer code and pseudo SIMD and avoid both SSE and FPU...
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ex: while pseudo SIMD needs more instructions (bit-twiddly, ...); the integer instructions execute a lot faster, so it ends up a net win...
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