Apple Silicon's Surprisingly Speedy SIMD

Discussion (5 Comments)Read Original on HackerNews

capyba•about 2 hours ago

I just don’t understand - Apple decided to implement a more capable SIMD instruction set and just … didn’t document it? SIMD is hugely important in anything remotely HPC related. My first gen apple silicon laptop still favorably competes against Intel’s current best, years later. Why would they hide such an advantage?

entrope•about 2 hours ago

My guess is that it's not complete or stable or qualified enough for them to publish it as a supported feature. Maybe the power draw is too high and it triggers thermal throttling too quickly, similar to early Intel AVX-512? Maybe they are still sorting out how to have each process choose SVE vs NEON mode, so libraries using the other one don't cause a fault? (Note that this seems limited to M4 and newer CPUs.)

I agree this is an important feature. I have very often wished that my Mac had wider vectors.

vsgherzi•about 2 hours ago

Besides Apple who is doing hpc on Apple silicon

imwally•about 1 hour ago

Why can’t I scroll on mobile Safari on this site? What in the world are we doing with websites these days where a user can’t even scroll?

peesem•about 2 hours ago

can people publish blog posts (and other things) literally anywhere else? especially now with nitter/xcancel/etc getting taken down

Apple Silicon's Surprisingly Speedy SIMD

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Discussion (5 Comments)Read Original on HackerNews