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GpuIndicesOptions.h
1 /**
2 * Copyright (c) Facebook, Inc. and its affiliates.
3 *
4 * This source code is licensed under the MIT license found in the
5 * LICENSE file in the root directory of this source tree.
6 */
7
8
9 #pragma once
10
11 namespace faiss { namespace gpu {
12
13 /// How user vector index data is stored on the GPU
14 enum IndicesOptions {
15 /// The user indices are only stored on the CPU; the GPU returns
16 /// (inverted list, offset) to the CPU which is then translated to
17 /// the real user index.
18 INDICES_CPU = 0,
19 /// The indices are not stored at all, on either the CPU or
20 /// GPU. Only (inverted list, offset) is returned to the user as the
21 /// index.
22 INDICES_IVF = 1,
23 /// Indices are stored as 32 bit integers on the GPU, but returned
24 /// as 64 bit integers
25 INDICES_32_BIT = 2,
26 /// Indices are stored as 64 bit integers on the GPU
27 INDICES_64_BIT = 3,
28 };
29
30 } } // namespace