| From: | John Naylor <johncnaylorls(at)gmail(dot)com> |
|---|---|
| To: | "Giacchino, Luca" <luca(dot)giacchino(at)intel(dot)com> |
| Cc: | "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "R, Rakshit" <rakshit(dot)r(at)intel(dot)com>, "Shankaran, Akash" <akash(dot)shankaran(at)intel(dot)com>, "Devulapalli, Raghuveer" <raghuveer(dot)devulapalli(at)intel(dot)com> |
| Subject: | Re: SIMD optimization for list_sort |
| Date: | 2024-11-23 02:59:55 |
| Message-ID: | CANWCAZa6WwCURrfoHVD++ufzhSXeb=MLe9JdtC8URZVmFDcJ9Q@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Nov 22, 2024 at 6:27 AM Giacchino, Luca
<luca(dot)giacchino(at)intel(dot)com> wrote:
> We’d appreciate feedback on this approach. In the meantime, we will complete the patch to share. We also plan to extend SIMD-based sort to tuple sort in the future.
Coincidentally, I'll be prototyping a tuple sort that will take better
advantage of keys that are integers (whether authoritative or
abbreviated), using scalar, portable branch-free techniques. This will
require some re-architecting and I believe that will also make it
easier for you to experiment with sorting networks there.
--
John Naylor
Amazon Web Services
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