Summary:
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2277
* extend a specialized AVX2 version for IVFPQScannerT::scan_list_with_table to cover IVFPQScannerT::scan_list_polysemous_hc as well
* lower the comparison precision in test_lowlevel_ivf tests from EXPECT_EQ to EXPECT-FLOAT_EQ because of the AVX2 change in IVFPQScannerT::scan_list_polysemous_hc, otherwise tests fail
Reviewed By: mdouze
Differential Revision: D34964138
fbshipit-source-id: 1d304a8f6eda040fa4c626676b4d492f2c12f04f
Changelog:
- changed license: BSD+Patents -> MIT
- propagates exceptions raised in sub-indexes of IndexShards and IndexReplicas
- support for searching several inverted lists in parallel (parallel_mode != 0)
- better support for PQ codes where nbit != 8 or 16
- IVFSpectralHash implementation: spectral hash codes inside an IVF
- 6-bit per component scalar quantizer (4 and 8 bit were already supported)
- combinations of inverted lists: HStackInvertedLists and VStackInvertedLists
- configurable number of threads for OnDiskInvertedLists prefetching (including 0=no prefetch)
- more test and demo code compatible with Python 3 (print with parentheses)
- refactored benchmark code: data loading is now in a single file
Alexandr Guzhva
Lucas Hosseini
Lucas Hosseini
matthijs