4 ms·
Zen 2 is adding 256 bit registers for 256 bit AVX instead of doing it in 2 passes with 128 bit registers.
by mackal 8y ago
Zen 2 is adding 256 bit registers for 256 bit AVX instead of doing it in 2 passes with 128 bit registers.
- stagger87 8y agoIf AMD can release a 16 core native AVX threadripper without thermal throttling that would be awesome. The same could be said with Intel and AVX-512. Hopefully this year we will see one or the other.
- dman 8y agoI hope AVX-512 is studied for its lessons on how not to do an ISA. I have very few technical complaints about it, but the following were a deal breaker 1. Limiting it to a subset of chips, and initially not releasing it for client chips at all. Creating ISAs for a small part of the market is the best way to ensure it does not see any use. 2. Reasoning about AVX512 performance is ridiculously difficult for most workloads because of the clock penalty. Unless you have cases where you are all AVX512 all the time, you will likely see performance drops.