Repository navigation
Expand file tree
/
Copy pathopencl.py
More file actions
260 lines (191 loc) · 5.94 KB
/
Copy pathopencl.py
File metadata and controls
260 lines (191 loc) · 5.94 KB
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
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
#######################################################
# Copyright (c) 2019, ArrayFire
# All rights reserved.
#
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# http://arrayfire.com/licenses/BSD-3-Clause
########################################################
"""
Functions specific to OpenCL backend.
This module provides interoperability with other OpenCL libraries.
"""
from enum import Enum
from .library import c_int_t, c_pointer, c_void_ptr_t
class DEVICE_TYPE(Enum):
"""
ArrayFire wrapper for CL_DEVICE_TYPE
"""
CPU = 1 << 1
GPU = 1 << 2
ACC = 1 << 3
UNKNOWN = -1
class PLATFORM(Enum):
"""
ArrayFire enum for common platforms
"""
AMD = 0
APPLE = 1
INTEL = 2
NVIDIA = 3
BEIGNET = 4
POCL = 5
UNKNOWN = -1
def get_context(retain=False):
"""
Get the current OpenCL context being used by ArrayFire.
Parameters
----------
retain : bool. optional. Default: False.
Specifies if the context needs to be retained by arrayfire before returning.
Returns
-----------
context : integer denoting the context id.
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
context = c_void_ptr_t(0)
safe_call(backend.get().afcl_get_context(c_pointer(context), retain))
return context.value
def get_queue(retain):
"""
Get the current OpenCL command queue being used by ArrayFire.
Parameters
----------
retain : bool. optional. Default: False.
Specifies if the context needs to be retained by arrayfire before returning.
Returns
-----------
queue : integer denoting the queue id.
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
queue = c_int_t(0)
safe_call(backend.get().afcl_get_queue(c_pointer(queue), retain))
return queue.value
def get_device_id():
"""
Get native (unsorted) OpenCL device ID
Returns
--------
idx : int.
Specifies the `cl_device_id` of the device.
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
idx = c_int_t(0)
safe_call(backend.get().afcl_get_device_id(c_pointer(idx)))
return idx.value
def set_device_id(idx):
"""
Set native (unsorted) OpenCL device ID
Parameters
----------
idx : int.
Specifies the `cl_device_id` of the device.
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
safe_call(backend.get().afcl_set_device_id(idx))
return
def add_device_context(dev, ctx, que):
"""
Add a new device to arrayfire opencl device manager
Parameters
----------
dev : cl_device_id
ctx : cl_context
que : cl_command_queue
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
safe_call(backend.get().afcl_add_device_context(dev, ctx, que))
def set_device_context(dev, ctx):
"""
Set a device as current active device
Parameters
----------
dev : cl_device_id
ctx : cl_context
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
safe_call(backend.get().afcl_set_device_context(dev, ctx))
def delete_device_context(dev, ctx):
"""
Delete a device
Parameters
----------
dev : cl_device_id
ctx : cl_context
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
safe_call(backend.get().afcl_delete_device_context(dev, ctx))
_to_device_type = {
DEVICE_TYPE.CPU.value: DEVICE_TYPE.CPU,
DEVICE_TYPE.GPU.value: DEVICE_TYPE.GPU,
DEVICE_TYPE.ACC.value: DEVICE_TYPE.ACC,
DEVICE_TYPE.UNKNOWN.value: DEVICE_TYPE.UNKNOWN}
_to_platform = {
PLATFORM.AMD.value: PLATFORM.AMD,
PLATFORM.APPLE.value: PLATFORM.APPLE,
PLATFORM.INTEL.value: PLATFORM.INTEL,
PLATFORM.NVIDIA.value: PLATFORM.NVIDIA,
PLATFORM.BEIGNET.value: PLATFORM.BEIGNET,
PLATFORM.POCL.value: PLATFORM.POCL,
PLATFORM.UNKNOWN.value: PLATFORM.UNKNOWN}
def get_device_type():
"""
Get opencl device type
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
res = c_int_t(DEVICE_TYPE.UNKNOWN.value)
safe_call(backend.get().afcl_get_device_type(c_pointer(res)))
return _to_device_type[res.value]
def get_platform():
"""
Get opencl platform
"""
# FIXME: ctypes imported but unused
import ctypes as ct
from .util import safe_call as safe_call
from .library import backend
if backend.name() != "opencl":
raise RuntimeError("Invalid backend loaded")
res = c_int_t(PLATFORM.UNKNOWN.value)
safe_call(backend.get().afcl_get_platform(c_pointer(res)))
return _to_platform[res.value]