On Thu, 28 Dec 2017 17:16:40 -0500 Paul Davis <paul@xxxxxxxxxxxxxxxxxxxxx> wrote: >On Thu, Dec 28, 2017 at 2:11 PM, Jeremy Henty <onepoint@xxxxxxxxxxxxxx> >wrote: > >> >> Will Godfrey wrote: >> >> > If I've understood that correctly you can also ensure that they are >> > also on the same socket, which apparently improves memory access. >> >> I think this is what is meant by NUMA (Non-Uniform Memory access). >> > >AFAIK, NUMA is dead for everything except a few research systems. > >Parallel/multi-processor systems these days are all "symmetric" (all >processors have symmetrical access to all memory). > >NUMA is really, really, really hard to get right. Why? Cache invalidation. >Several companies, organizations, etc. have tried. Last time I looked (and >it has been a while, but I was quite involved with this stuff in the mid >1990s), everybody failed. > This is proving to be quite fascinating, so thanks everyone for jumping on board and contributing. I won't say the mists have cleared, but they certainly seem a lot thinner :) -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
