Summary:
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2638
This diff is a more streamlined way of searching IVF indexes with precomputed clusters.
This will be used for experiments with hybrid CPU / GPU search.
Reviewed By: algoriddle
Differential Revision: D41301032
fbshipit-source-id: a1d645fd0f2bf806454dfd04971edc0a6200d20d
Summary:
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2567
Intuitively, it should be easier to handle big-batch searches because all distance computations for a set of queries can be done locally within each inverted list.
This benchmark implements this in pure python (but should be close to optimal in terms of speed), on CPU for IndexIVFFlat, IndexIVFPQ and IndexIVFScalarQuantizer. GPU is also supported.
The results are not systematically better, see https://docs.google.com/document/d/1d3YuV8uN7hut6aOATCOMx8Ut-QEl_oRnJdPgDBRF1QA/edit?usp=sharing
Reviewed By: algoriddle
Differential Revision: D41098338
fbshipit-source-id: 479e471b0d541f242d420f581775d57b708a61b8
Michael Norris
Sid Jha
Matthijs Douze