AscendIndexIVFPQ

AscendIndexIVFPQ(const faiss::IndexIVFPQ *index, AscendIndexIVFPQConfig config = AscendIndexIVFPQConfig())

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

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

AscendIndexIVFPQConfig config: resource configuration on the NPU.

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The index must be a valid CPUindex pointer. The member functions of the index must meet the following requirements: d ∈ {64, 128, 256, 384, 512, 1024, 2048}, nlist ∈ {1024, 2048, 4096, 8192, 16384}, dim/subQuantizers ∈ {4, 8, 16, 32, 48, 64, 96, 128, 256}, bitsPerCode = 8, and metric = faiss::MetricType::METRIC_L2.