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MemorySpace.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 // Copyright 2004-present Facebook. All Rights Reserved.
10
11 #pragma once
12
13 #include "../../FaissAssert.h"
14 #include <cuda.h>
15
16 #if CUDA_VERSION >= 8000
17 // Whether or not we enable usage of CUDA Unified Memory
18 #define FAISS_UNIFIED_MEM 1
19 #endif
20
21 namespace faiss { namespace gpu {
22
23 enum MemorySpace {
24 /// Managed using cudaMalloc/cudaFree
25 Device = 1,
26 /// Managed using cudaMallocManaged/cudaFree
27 Unified = 2,
28 };
29
30 /// Allocates CUDA memory for a given memory space
31 void allocMemorySpace(MemorySpace space, void** p, size_t size);
32
33 } }