v1.9.0

Added

• Add AVX-512 implementation for the distance and scalar quantizer functions. (#3853)
• Allow k and M suffixes in IVF indexes (#3812)
• add reconstruct support to additive quantizers (#3752)
• introduce options for reducing the overhead for a clustering procedure (#3731)
• Add hnsw search params for bounded queue option (#3748)
• ROCm support (#3462)
• Add sve targets (#2886)
• add get_version() for c_api (#3688)
• QINCo implementation in CPU Faiss (#3608)
• Add search functionality to FlatCodes (#3611)
• add dispatcher for VectorDistance and ResultHandlers (#3627)
• Add SQ8bit signed quantization (#3501)
• Add ABS_INNER_PRODUCT metric (#3524)
• Interop between CAGRA and HNSW (#3252)
• add skip_storage flag to HNSW (#3487)
• QT_bf16 for scalar quantizer for bfloat16 (#3444)
• Implement METRIC.NaNEuclidean (#3414)
• TimeoutCallback C++ and Python (#3417)
• support big-endian machines (#3361)
• Support for Remove ids from IVFPQFastScan index (#3354)
• Implement reconstruct_n for GPU IVFFlat indexes (#3338)
• Support of skip_ids in merge_from_multiple function of OnDiskInvertedLists (#3327)
• Add the ability to clone and read binary indexes to the C API. (#3318)
• AVX512 for PQFastScan (#3276)

Changed

• faster hnsw CPU index training (#3822)
• Some small improvements. (#3692)
• First attempt at LSH matching with nbits (#3679)
• Set verbosoe before train (#3619)
• Remove duplicate NegativeDistanceComputer instances (#3450)
• interrupt for NNDescent (#3432)
• Get rid of redundant instructions in ScalarQuantizer (#3430)
• PowerPC, improve code generation for function fvec_L2sqr (#3416)
• Unroll loop in lookup_2_lanes (#3364)
• Improve filtering & search parameters propagation (#3304)
• Change index_cpu_to_gpu to throw for indices not implemented on GPU (#3336)
• Throw when attempting to move IndexPQ to GPU (#3328)
• Skip HNSWPQ sdc init with new io flag (#3250)

Fixed

• FIx a bug for a non-simdlib code of ResidualQuantizer (#3868)
• assign_index should default to null (#3855)
• Fix an incorrectly counted the number of computed distances for HNSW (#3840)
• Add error for overflowing nbits during PQ construction (#3833)
• Fix radius search with HSNW and IP (#3698)
• fix algorithm of spreading vectors over shards (#3374)
• Fix IndexBinary.assign Python method (#3384)
• Few fixes in bench_fw to enable IndexFromCodec (#3383)
• Fix the endianness issue in AIX while running the benchmark. (#3345)
• Fix faiss swig build with version > 4.2.x (#3315)
• Fix problems when using 64-bit integers. (#3322)
• Fix IVFPQFastScan decode function (#3312)
• Handling FaissException in few destructors of ResultHandler.h (#3311)
• Fix HNSW stats (#3309)
• AIX compilation fix for io classes (#3275)