$ sysctl hw.optional | grep -E 'neon|armv8' hw.optional.neon: 1 hw.optional.neon_hpfp: 1 hw.optional.neon_fp16: 1 hw.optional.armv8_1_atomics: 1 hw.optional.armv8_crc32: 1 hw.optional.armv8_2_fhm: 1 hw.optional.armv8_2_sha512: 1 hw.optional.armv8_2_sha3: 1
> Le 26 avr. 2021 à 19:55, Jason Liu <[email protected]> a écrit : > > On Mon, Apr 26, 2021 at 1:42 PM Christopher Jones <[email protected] > <mailto:[email protected]>> wrote: > Thats not at all surprising as those instruction sets are very much specific > to X86_64 systems. > > RISC processors, Arm, do have their own sets of SIMD instructions (e.g. > Neon), but they are entirely different to those on X86_64 machines. > > Whether or these are supported on Apple’s M1 processors I have no idea. > > It looks like the M1 supports Neon SIMD instructions, but not SVE SIMD (which > I guess is supposed to be similar to AVX?): > > https://discussions.apple.com/thread/252073619 > <https://discussions.apple.com/thread/252073619> > > -- > Jason Liu > > > On Mon, Apr 26, 2021 at 1:42 PM Christopher Jones <[email protected] > <mailto:[email protected]>> wrote: > > >> On 26 Apr 2021, at 6:28 pm, Jason Liu <[email protected] >> <mailto:[email protected]>> wrote: >> >> Thanks Arno :) >> >> I'm kind of surprised that the M1 doesn't seem to support any SSE or AVX.... > > > Thats not at all surprising as those instruction sets are very much specific > to X86_64 systems. > > RISC processors, Arm, do have their own sets of SIMD instructions (e.g. > Neon), but they are entirely different to those on X86_64 machines. > > Whether or these are supported on Apple’s M1 processors I have no idea. > > Chris > > > >> >> Does "sysctl machdep.cpu.features" return anything? >> >> -- >> Jason Liu >> >> >> On Mon, Apr 26, 2021 at 1:23 PM Arno Hautala <[email protected] >> <mailto:[email protected]>> wrote: >> > On 26 Apr 2021, at 13:20, Jason Liu <[email protected] >> > <mailto:[email protected]>> wrote: >> > >> > sysctl machdep.cpu.brand_string ; sysctl machdep.cpu | grep -i "avx\|sse” >> >> $ sysctl machdep.cpu.brand_string ; sysctl machdep.cpu | grep -i "avx\|sse” >> machdep.cpu.brand_string: Apple M1 >> >> -- >> arno s hautala /-| [email protected] <mailto:[email protected]> >> >> pgp b2c9d448 >> >> >
