Re: AVX-512 for LAME: code to try, if you have the hardware
Alexander Leidinger via Lame-dev <[email protected]> Thu, 30 Jul 2026 14:14:01 +0200
| Newsgroups | gmane.comp.audio.mp3.lame |
|---|---|
| Organization | No organization, this is a private message. |
| Message-ID | <[email protected]> |
Am 2026-07-28 22:42, schrieb Elio Blanca: > Il giorno Tue, 28 Jul 2026 11:58:16 +0200 > Alexander Leidinger <[email protected]> ha scritto: > >> 1) Which of the two builds did you time? > > it is stage 2 > > >> 2) [...] Could you repeat it with the two swapped: > > Sure: I made again a full cycle for cbr and then for vbr. > Here are the command line results: Thanks a lot! This settles it. AVX512 is beneficial for CBR only, and only on Intel hardware. For ZEN it is around 1% slower than AVX2, but I'm willing to trade that in against a vendor specific tuning (still faster than the SSE2 version). Bye, Alexander. -- http://www.Leidinger.net [email protected]: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org [email protected] : PGP 0x8F31830F9F2772BF