AscendIndexIVFast

AscendIndexIVFast(const faiss::IndexIVFScalarQuantizer *index, AscendIndexIVFastConfig config = AscendIndexIVFastConfig())

Constructor of AscendIndexIVFast, which is used to create a retrieval index on the Ascend based on an existing index.

const faiss::IndexIVFScalarQuantizer *index: resource configuration on the CPU.

AscendIndexIVFastConfig config: resource configuration on the NPU.

N/A

N/A

• The index must be a valid CPUindex pointer.
• The dimension of index is different from that of index->sq and can be divided by the index->sq dimension.
• index->d ∈ {64, 128, 256, 384, 512, 1024}
• index->sq.d ∈ {32, 64, 96, 128}
• The dimension of index must be greater than that of index->sq and can be divided by the index->sq dimension.