Function cuvsIvfPqBuildPrecomputed 

pub unsafe extern "C" fn cuvsIvfPqBuildPrecomputed(
    res: cuvsResources_t,
    params: cuvsIvfPqIndexParams_t,
    dim: u32,
    pq_centers: *mut DLManagedTensor,
    centers: *mut DLManagedTensor,
    centers_rot: *mut DLManagedTensor,
    rotation_matrix: *mut DLManagedTensor,
    index: cuvsIvfPqIndex_t,
) -> cuvsError_t

@brief Build a view-type IVF-PQ index from device memory precomputed centroids and codebook.

This function creates a non-owning index that stores a reference to the provided device data. All parameters must be provided with correct extents. The caller is responsible for ensuring the lifetime of the input data exceeds the lifetime of the returned index.

The index_params must be consistent with the provided matrices. Specifically:

• index_params.codebook_kind determines the expected shape of pq_centers
• index_params.metric will be stored in the index
• index_params.conservative_memory_allocation will be stored in the index The function will verify consistency between index_params, dim, and the matrix extents.

@param[in] res cuvsResources_t opaque C handle @param[in] params cuvsIvfPqIndexParams_t used to configure the index (must be consistent with matrices) @param[in] dim dimensionality of the input data @param[in] pq_centers PQ codebook on device memory with required shape:

• codebook_kind CUVS_IVF_PQ_CODEBOOK_GEN_PER_SUBSPACE: [pq_dim, pq_len, pq_book_size]
• codebook_kind CUVS_IVF_PQ_CODEBOOK_GEN_PER_CLUSTER: [n_lists, pq_len, pq_book_size] @param[in] centers Cluster centers in the original space [n_lists, dim_ext] where dim_ext = round_up(dim + 1, 8) @param[in] centers_rot Rotated cluster centers [n_lists, rot_dim] where rot_dim = pq_len * pq_dim @param[in] rotation_matrix Transform matrix (original space -> rotated padded space) [rot_dim, dim] @param[out] index cuvsIvfPqIndex_t Newly built view-type IVF-PQ index @return cuvsError_t