Re: Popcount optimization using AVX512
Nathan Bossart <nathandbossart@gmail.com>
From: Nathan Bossart <nathandbossart@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>, Ants Aasma <ants.aasma@cybertec.at>, "Amonson, Paul D" <paul.d.amonson@intel.com>, David Rowley <dgrowleyml@gmail.com>, Andres Freund <andres@anarazel.de>, "Shankaran, Akash" <akash.shankaran@intel.com>, Noah Misch <noah@leadboat.com>, Matthias van de Meent <boekewurm+postgres@gmail.com>, "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>
Date: 2024-04-03T02:09:14Z
Lists: pgsql-hackers
Commits
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API reference →
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Fix __attribute__((target(...))) usage.
- 41b98ddb77bf 18.0 landed
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Use __attribute__((target(...))) for AVX-512 support.
- f78667bd910e 18.0 landed
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Fix code for probing availability of AVX-512.
- 598e0114a3b1 17.0 landed
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Optimize visibilitymap_count() with AVX-512 instructions.
- 41c51f0c68b2 17.0 landed
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Optimize pg_popcount() with AVX-512 instructions.
- 792752af4eb5 17.0 landed
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Inline pg_popcount() for small buffers.
- deb1486c7d36 17.0 landed
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Avoid function call overhead of pg_popcount() in syslogger.c.
- 4133c1f45c54 17.0 landed
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Refactor code for setting pg_popcount* function pointers.
- 6687430c98f3 17.0 landed
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Inline pg_popcount{32,64} into pg_popcount().
- cc4826dd5e52 17.0 landed
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Remove MSVC scripts
- 1301c80b2167 17.0 cited
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Use ARMv8 CRC instructions where available.
- f044d71e331d 11.0 cited
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Use Intel SSE 4.2 CRC instructions where available.
- 3dc2d62d0486 9.5.0 cited
Attachments
On Tue, Apr 02, 2024 at 05:20:20PM -0500, Nathan Bossart wrote: > Sorry for the noise. I noticed a couple of silly mistakes immediately > after sending v21. Sigh... I missed a line while rebasing these patches, which seems to have grossly offended cfbot. Apologies again for the noise. -- Nathan Bossart Amazon Web Services: https://aws.amazon.com