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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 CC-by-NC license found in the
6 * LICENSE file in the root directory of this source tree.
7 */
8
9 // Copyright 2004-present Facebook. All Rights Reserved.
10
11 #pragma once
12
13 namespace faiss { namespace gpu {
14
15 /// How user vector index data is stored on the GPU
16 enum IndicesOptions {
17 /// The user indices are only stored on the CPU; the GPU returns
18 /// (inverted list, offset) to the CPU which is then translated to
19 /// the real user index.
20 INDICES_CPU = 0,
21 /// The indices are not stored at all, on either the CPU or
22 /// GPU. Only (inverted list, offset) is returned to the user as the
23 /// index.
24 INDICES_IVF = 1,
25 /// Indices are stored as 32 bit integers on the GPU, but returned
26 /// as 64 bit integers
27 INDICES_32_BIT = 2,
28 /// Indices are stored as 64 bit integers on the GPU
29 INDICES_64_BIT = 3,
30 };
31
32 } } // namespace