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GeezerVison is showing github.com — arrayfire-python/arrayfire/opencl.py at master · arrayfire/arrayfire-python Expand file tree/ Copy pathopencl.pyMore file actions 243 lines (180 loc) · 5.88 KB / Copy pathopencl.pyFile metadata and controls243 lines (180 loc) · 5.88 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 ####################################################### # Copyright (c) 2015, 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 .util import * from .library import (_Enum, _Enum_Type) class DEVICE_TYPE(_Enum): """ ArrayFire wrapper for CL_DEVICE_TYPE """ CPU = _Enum_Type(1<<1) GPU = _Enum_Type(1<<2) ACC = _Enum_Type(1<<3) UNKNOWN = _Enum_Type(-1) class PLATFORM(_Enum): """ ArrayFire enum for common platforms """ AMD = _Enum_Type(0) APPLE = _Enum_Type(1) INTEL = _Enum_Type(2) NVIDIA = _Enum_Type(3) BEIGNET = _Enum_Type(4) POCL = _Enum_Type(5) UNKNOWN = _Enum_Type(-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. """ 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. """ 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. """ 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. """ 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 """ 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 """ 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 """ 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 """ 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 """ 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] |
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