-
Notifications
You must be signed in to change notification settings - Fork 407
/
Kokkos_HBWSpace.hpp
235 lines (188 loc) · 7.23 KB
/
Kokkos_HBWSpace.hpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
//@HEADER
// ************************************************************************
//
// Kokkos v. 4.0
// Copyright (2022) National Technology & Engineering
// Solutions of Sandia, LLC (NTESS).
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
// See https://kokkos.org/LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//@HEADER
#ifndef KOKKOS_IMPL_PUBLIC_INCLUDE
#include <Kokkos_Macros.hpp>
static_assert(false,
"Including non-public Kokkos header files is not allowed.");
#endif
#ifndef KOKKOS_HBWSPACE_HPP
#define KOKKOS_HBWSPACE_HPP
#include <Kokkos_Macros.hpp>
#ifdef KOKKOS_ENABLE_HBWSPACE
#include <Kokkos_HostSpace.hpp>
#include <impl/Kokkos_SharedAlloc.hpp>
namespace Kokkos {
namespace Experimental {
/// \class HBWSpace
/// \brief Memory management for host memory.
///
/// HBWSpace is a memory space that governs host memory. "Host"
/// memory means the usual CPU-accessible memory.
class HBWSpace {
public:
//! Tag this class as a kokkos memory space
using memory_space = HBWSpace;
using size_type = size_t;
/// \typedef execution_space
/// \brief Default execution space for this memory space.
///
/// Every memory space has a default execution space. This is
/// useful for things like initializing a View (which happens in
/// parallel using the View's default execution space).
using execution_space = Kokkos::DefaultHostExecutionSpace;
//! This memory space preferred device_type
using device_type = Kokkos::Device<execution_space, memory_space>;
/**\brief Default memory space instance */
HBWSpace();
HBWSpace(const HBWSpace& rhs) = default;
HBWSpace& operator=(const HBWSpace&) = default;
~HBWSpace() = default;
/**\brief Non-default memory space instance to choose allocation mechansim,
* if available */
enum AllocationMechanism {
STD_MALLOC,
POSIX_MEMALIGN,
POSIX_MMAP,
INTEL_MM_ALLOC
};
explicit HBWSpace(const AllocationMechanism&);
/**\brief Allocate untracked memory in the space */
void* allocate(const size_t arg_alloc_size) const;
void* allocate(const char* arg_label, const size_t arg_alloc_size,
const size_t arg_logical_size = 0) const;
/**\brief Deallocate untracked memory in the space */
void deallocate(void* const arg_alloc_ptr, const size_t arg_alloc_size) const;
void deallocate(const char* arg_label, void* const arg_alloc_ptr,
const size_t arg_alloc_size,
const size_t arg_logical_size = 0) const;
private:
void* impl_allocate(const char* arg_label, const size_t arg_alloc_size,
const size_t arg_logical_size = 0,
const Kokkos::Tools::SpaceHandle =
Kokkos::Tools::make_space_handle(name())) const;
void impl_deallocate(const char* arg_label, void* const arg_alloc_ptr,
const size_t arg_alloc_size,
const size_t arg_logical_size = 0,
const Kokkos::Tools::SpaceHandle =
Kokkos::Tools::make_space_handle(name())) const;
public:
/**\brief Return Name of the MemorySpace */
static constexpr const char* name() { return "HBW"; }
private:
AllocationMechanism m_alloc_mech;
};
} // namespace Experimental
} // namespace Kokkos
//----------------------------------------------------------------------------
KOKKOS_IMPL_SHARED_ALLOCATION_SPECIALIZATION(Kokkos::Experimental::HBWSpace);
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Impl {
static_assert(Kokkos::Impl::MemorySpaceAccess<
Kokkos::Experimental::HBWSpace,
Kokkos::Experimental::HBWSpace>::assignable);
template <>
struct MemorySpaceAccess<Kokkos::HostSpace, Kokkos::Experimental::HBWSpace> {
enum : bool { assignable = true };
enum : bool { accessible = true };
enum : bool { deepcopy = true };
};
template <>
struct MemorySpaceAccess<Kokkos::Experimental::HBWSpace, Kokkos::HostSpace> {
enum : bool { assignable = false };
enum : bool { accessible = true };
enum : bool { deepcopy = true };
};
} // namespace Impl
} // namespace Kokkos
//----------------------------------------------------------------------------
namespace Kokkos {
namespace Impl {
template <>
struct DeepCopy<Kokkos::Experimental::HBWSpace, Kokkos::Experimental::HBWSpace,
DefaultHostExecutionSpace> {
DeepCopy(void* dst, const void* src, size_t n) {
hostspace_parallel_deepcopy(dst, src, n);
}
DeepCopy(const DefaultHostExecutionSpace& exec, void* dst, const void* src,
size_t n) {
hostspace_parallel_deepcopy(exec, dst, src, n);
}
};
template <class ExecutionSpace>
struct DeepCopy<Kokkos::Experimental::HBWSpace, Kokkos::Experimental::HBWSpace,
ExecutionSpace> {
DeepCopy(void* dst, const void* src, size_t n) {
hostspace_parallel_deepcopy(dst, src, n);
}
DeepCopy(const ExecutionSpace& exec, void* dst, const void* src, size_t n) {
exec.fence(
"Kokkos::Impl::DeepCopy<Kokkos::Experimental::HBWSpace, "
"Kokkos::Experimental::HBWSpace,ExecutionSpace::DeepCopy: fence "
"before copy");
hostspace_parallel_deepcopy_async(dst, src, n);
}
};
template <>
struct DeepCopy<HostSpace, Kokkos::Experimental::HBWSpace,
DefaultHostExecutionSpace> {
DeepCopy(void* dst, const void* src, size_t n) {
hostspace_parallel_deepcopy(dst, src, n);
}
DeepCopy(const DefaultHostExecutionSpace& exec, void* dst, const void* src,
size_t n) {
hostspace_parallel_deepcopy(exec, dst, src, n);
}
};
template <class ExecutionSpace>
struct DeepCopy<HostSpace, Kokkos::Experimental::HBWSpace, ExecutionSpace> {
DeepCopy(void* dst, const void* src, size_t n) {
hostspace_parallel_deepcopy(dst, src, n);
}
DeepCopy(const ExecutionSpace& exec, void* dst, const void* src, size_t n) {
exec.fence(
"Kokkos::Impl::DeepCopy<HostSpace, Kokkos::Experimental::HBWSpace, "
"ExecutionSpace>::DeepCopy: fence before copy");
hostspace_parallel_deepcopy_async(copy_space, dst, src, n);
}
};
template <>
struct DeepCopy<Kokkos::Experimental::HBWSpace, HostSpace,
DefaultHostExecutionSpace> {
DeepCopy(void* dst, const void* src, size_t n) {
hostspace_parallel_deepcopy(dst, src, n);
}
DeepCopy(const DefaultHostExecutionSpace& exec, void* dst, const void* src,
size_t n) {
hostspace_parallel_deepcopy(exec, dst, src, n);
}
};
template <class ExecutionSpace>
struct DeepCopy<Kokkos::Experimental::HBWSpace, HostSpace, ExecutionSpace> {
DeepCopy(void* dst, const void* src, size_t n) {
hostspace_parallel_deepcopy(dst, src, n);
}
DeepCopy(const ExecutionSpace& exec, void* dst, const void* src, size_t n) {
exec.fence(
"Kokkos::Impl::DeepCopy<Kokkos::Experimental::HBWSpace, HostSpace, "
"ExecutionSpace>::DeepCopy: fence before copy");
hostspace_parallel_deepcopy_async(dst, src, n);
}
};
} // namespace Impl
} // namespace Kokkos
#endif
#endif // #define KOKKOS_HBWSPACE_HPP