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GpuIndicesOptions.h
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 namespace faiss { namespace gpu {
15
16 /// How user vector index data is stored on the GPU
17 enum IndicesOptions {
18 /// The user indices are only stored on the CPU; the GPU returns
19 /// (inverted list, offset) to the CPU which is then translated to
20 /// the real user index.
21 INDICES_CPU = 0,
22 /// The indices are not stored at all, on either the CPU or
23 /// GPU. Only (inverted list, offset) is returned to the user as the
24 /// index.
25 INDICES_IVF = 1,
26 /// Indices are stored as 32 bit integers on the GPU, but returned
27 /// as 64 bit integers
28 INDICES_32_BIT = 2,
29 /// Indices are stored as 64 bit integers on the GPU
30 INDICES_64_BIT = 3,
31 };
32
33 } } // namespace