copyFrom

void copyFrom(const faiss::IndexIVFScalarQuantizer *index);

Copies AscendIndexIVSQT to the Ascend based on an existing index and retains the resource configuration on the device of the original AscendIndex.

const faiss::IndexIVFScalarQuantizer* index: index resources on the CPU.

N/A

N/A

index must be a valid CPU Index pointer.

• index->d ∈ {256}
• index->sq.d ∈ {32, 64, 128}
• The dimension of index must be greater than that of index->sq and can be divided by index->sq.
• Do not call this API for objects that have been updated.