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PQScanMultiPassNoPrecomputed.cuh
1
2 /**
3 * Copyright (c) 2015-present, Facebook, Inc.
4 * All rights reserved.
5 *
6 * This source code is licensed under the CC-by-NC license found in the
7 * LICENSE file in the root directory of this source tree.
8 */
9
10 // Copyright 2004-present Facebook. All Rights Reserved.
11
12 #pragma once
13
14 #include "../GpuIndicesOptions.h"
15 #include "../utils/Tensor.cuh"
16 #include <thrust/device_vector.h>
17
18 namespace faiss { namespace gpu {
19
20 class GpuResources;
21
22 /// For no precomputed codes, is this a supported number of dimensions
23 /// per subquantizer?
24 bool isSupportedNoPrecomputedSubDimSize(int dims);
25
26 void runPQScanMultiPassNoPrecomputed(Tensor<float, 2, true>& queries,
27 Tensor<float, 2, true>& centroids,
28 Tensor<float, 3, true>& pqCentroidsInnermostCode,
29 Tensor<int, 2, true>& topQueryToCentroid,
30 bool useFloat16Lookup,
31 int bytesPerCode,
32 int numSubQuantizers,
33 int numSubQuantizerCodes,
34 thrust::device_vector<void*>& listCodes,
35 thrust::device_vector<void*>& listIndices,
36 IndicesOptions indicesOptions,
37 thrust::device_vector<int>& listLengths,
38 int maxListLength,
39 int k,
40 // output
41 Tensor<float, 2, true>& outDistances,
42 // output
43 Tensor<long, 2, true>& outIndices,
44 GpuResources* res);
45
46 } } // namespace