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GpuIndicesOptions.h
1 /**
2 * Copyright (c) 2015-present, Facebook, Inc.
3 * All rights reserved.
4 *
5 * This source code is licensed under the BSD+Patents license found in the
6 * LICENSE file in the root directory of this source tree.
7 */
8
9
10 #pragma once
11
12 namespace faiss { namespace gpu {
13
14 /// How user vector index data is stored on the GPU
15 enum IndicesOptions {
16 /// The user indices are only stored on the CPU; the GPU returns
17 /// (inverted list, offset) to the CPU which is then translated to
18 /// the real user index.
19 INDICES_CPU = 0,
20 /// The indices are not stored at all, on either the CPU or
21 /// GPU. Only (inverted list, offset) is returned to the user as the
22 /// index.
23 INDICES_IVF = 1,
24 /// Indices are stored as 32 bit integers on the GPU, but returned
25 /// as 64 bit integers
26 INDICES_32_BIT = 2,
27 /// Indices are stored as 64 bit integers on the GPU
28 INDICES_64_BIT = 3,
29 };
30
31 } } // namespace