Adrien Grand created LUCENE-10453:
-------------------------------------
Summary: Speed up VectorUtil#squareDistance
Key: LUCENE-10453
URL: https://issues.apache.org/jira/browse/LUCENE-10453
Project: Lucene - Core
Issue Type: Task
Reporter: Adrien Grand
{{VectorUtil#squareDistance}} is used in conjunction with
{{VectorSimilarityFunction#EUCLIDEAN}}.
It didn't get as much love as dot products (LUCENE-9837) yet there seems to be
room for improvement. I wrote a quick JMH benchmark to run some comparisons:
https://github.com/jpountz/vector-similarity-benchmarks.
While it's not as fast as using the vector API (which makes squareDistance
computations more than 2x faster), we can get a ~25% speedup by unrolling the
loop in a similar way to what dot product does.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
