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