Hello, On Wed, 18 Jun 2025 at 13:44, Michael Lackner <michael.lack...@unileoben.ac.at> wrote:
> Thank you very much for your reply! In the meantime I have researched a bit, > and it > appears that "VSX" is a sub-extension that was added to Altivec with POWER7. > At least > Wikipedia says so: > > https://en.wikipedia.org/wiki/AltiVec#VSX_(Vector_Scalar_Extension) > > According to the person who owns this specific PowerMac G5, certain older and > newer > versions of x265 *do* compile, but crash with an illegal instruction > exception, indicating > that they're attempting to execute operators that the old POWER4 chips simply > don't have. Thanks for sharing this. I clearly didn't do my homework. > The x265 version my benchmark uses is locked to 2.5+48-bd438ce10843 for > comparability reasons. Well, that's not so bad! It's only 8 years old. > I have talked with the person who owns the machine, and he says he might just > give you > access (via SSH), just in case you'd be willing to give this a shot. > > Creating such a "Big Endian POWER4" branch smells like a lot of work though... That's a nice offer, but I don't have free time for playing with antiquities these days... > Also: Sad to hear you had your G5 Quad stolen. :( I also had one once, but > yep, that > liquid cooling system.. Mine ran out of liquid before I noticed, so it killed > one of my > two Laing pumps. :( :-( Guillaume _______________________________________________ x265-devel mailing list x265-devel@videolan.org https://mailman.videolan.org/listinfo/x265-devel
