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PQScanMultiPassNoPrecomputed.cuh
/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD+Patents license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include "../GpuIndicesOptions.h"
#include "../utils/Tensor.cuh"
#include <thrust/device_vector.h>
namespace faiss { namespace gpu {
class GpuResources;
/// For no precomputed codes, is this a supported number of dimensions
/// per subquantizer?
bool isSupportedNoPrecomputedSubDimSize(int dims);
void runPQScanMultiPassNoPrecomputed(Tensor<float, 2, true>& queries,
Tensor<float, 2, true>& centroids,
Tensor<float, 3, true>& pqCentroidsInnermostCode,
Tensor<int, 2, true>& topQueryToCentroid,
bool useFloat16Lookup,
int bytesPerCode,
int numSubQuantizers,
int numSubQuantizerCodes,
thrust::device_vector<void*>& listCodes,
thrust::device_vector<void*>& listIndices,
IndicesOptions indicesOptions,
thrust::device_vector<int>& listLengths,
int maxListLength,
int k,
// output
Tensor<float, 2, true>& outDistances,
// output
Tensor<long, 2, true>& outIndices,
GpuResources* res);
} } // namespace