Re: Popcount optimization using AVX512 - Mailing list pgsql-hackers

From Nathan Bossart
Subject Re: Popcount optimization using AVX512
Date
Msg-id 20240318173253.GB361138@nathanxps13
Whole thread Raw
In response to RE: Popcount optimization using AVX512  ("Amonson, Paul D" <paul.d.amonson@intel.com>)
List pgsql-hackers
On Mon, Mar 18, 2024 at 05:28:32PM +0000, Amonson, Paul D wrote:
> Question: I applied the patch for the drive_popcount* functions and
> rebuilt.  The resultant server complains that the function is missing.
> What is the trick to make this work?

You probably need to install the test_popcount extension and run "CREATE
EXTENION test_popcount;".

> Another Question: Is there a reason "time psql" is used over the Postgres
> "\timing" command?

I don't think there's any strong reason.  I've used both.

-- 
Nathan Bossart
Amazon Web Services: https://aws.amazon.com



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