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It's strange Agner seems so against this hybrid design despite the fact it's been proven to work so well for ARM. I'd agree this architecture is very difficult
by fancyfredbot 4y ago
It's strange Agner seems so against this hybrid design despite the fact it's been proven to work so well for ARM. I'd agree this architecture is very difficult to optimize a single application for, but on the other hand he doesn't seem to consider whether it can lead to better performance and battery life in everyday use cases with mixed workloads using less than 100% of available performance.
- zaptrem 4y agoHe seems more annoyed about bad software thread management in Windows 11 (and none at all in Linux and MacOS) and that P & E cores have different instruction set support, which messes with apps.
- fancyfredbot 4y agoIt's weird to be annoyed by the difference in instruction set because by default they do have the same instruction set, and neither support avx512. You have to go to great lengths to enable avx512 on the P cores and as he says only certain motherboards can do it. I'll admit it is a shame that neither core supports avx512 by default though. If he'd said he was upset the gracemont E cores didn't emulate avx512 in microcode then I'd agree completely.
- TaylorPhebillo 4y agoARM big little uses the same instruction set on each core, right? You wouldn't have one 8.2 core and one 8.4 core?