4 ms·
Isn't that just a prefetcher win? AVX/SSE lets you do more computational work per cycle but I don't see how it would improve memory bandwidth/access.
by nimos 9y ago
Isn't that just a prefetcher win? AVX/SSE lets you do more computational work per cycle but I don't see how it would improve memory bandwidth/access.
- cwzwarich 9y agoThe CPU's load/store unit is usually designed with SIMD in mind, and the access width is 16 bytes (or 32 bytes for Haswell-and-later Intel CPUs). This means you get more bandwidth by using SIMD.