While everyone is enjoying all the #AMD #Zen4 performance reviews, here is my teardown of Zen4's #AVX512 implementation and architecture. tl;dr - Intel has some serious competition now. mersenneforum.org/showthread.php…- #Zen5 desktop reviews are out! Time for another technical #AVX512 teardown. numberworld.org/blogs/2024_8_7…
- Here’s the problem with the 7950X3D: 1. Gamers hate it. (expensive, scheduling broken) 2. Devs hate it. (X3D not helpful, clock drop) 3. HPC hates it. (needs symmetry) 4. “Productivity” hates it. (scheduling broken) 5. People just hate asymmetry. A dual X3D chip would fix 3-5.For the past half a year, I’ve told multiple high-ranking #AMD engineers to do this even if it’s just a halo product. At no point did I get the impression that this would actually happen - not even in body language. I’ll believe it when I see it. And yes I want it!
- y-cruncher v0.7.10 coming out soon with Zen4 AVX512 optimizations. This was fun since there are no optimization resources yet for this chip. Had to do all the RE myself.😅
- Intel just gave me permission to release the blog on the #AVX Clock Speed Throttle #Spectre. So as promised, here it is - the way I intended to publish it back in June before #NetSpectre was announced: numberworld.org/blogs/2018_6_1…
- The CPU benchmarking community will hate me for this. But the next version of y-cruncher will see large performance changes (both up and down). The #AVX2 -> #AVX512 speedup on #Zen4 will soon grow to 10+% - no wider EUs needed. numberworld.org/y-cruncher/new…
- We're in business now. #Zen5 However, the 9950X is turning out to be a lot more different from the 12-core ES than I had expected. So I need to investigate. Hopefully delay won't be long. x.com/Mysticial/stat…
- For the past half a year, I’ve told multiple high-ranking #AMD engineers to do this even if it’s just a halo product. At no point did I get the impression that this would actually happen - not even in body language. I’ll believe it when I see it. And yes I want it!AMD Ryzen 9 9950X3D and 9900X3D to Feature 3D V-cache on Both CCD Chiplets tpu.me/n4eu
- This looks like confirmation of 4 x 512-bit #AVX512 on #AMD Zen5? @InstLatX64 forums.anandtech.com/threads/zen-5-…
- With Lisa's keynote over, I will casually drop this to confirm that y-cruncher v0.8.5 will get #Zen5 optimizations with it's big and fat #AVX512. Release date still ETA - pending final silicon. x.com/Mysticial/stat… ST and BBP will be where the light shines the brightest.
- Full article is out now. Sorry for the wait everyone! #Zen5 #AVX512 numberworld.org/blogs/2024_8_7… Also, did everyone else get retail samples? Every reviewer screenshot/video of their samples seems to be missing the "D" letter mark.#Zen5 desktop reviews are out! Time for another technical #AVX512 teardown. numberworld.org/blogs/2024_8_7…
- Last mini-blog for the year: Combine all the following: - 256-core AMD EPYC Bergamo - Amdahl's Law - Zen4 CPU Hazard And you get one of the bigger perf slowdowns in the history of y-cruncher. numberworld.org/y-cruncher/new…
