1 | #include "NBody.hpp" |
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2 | |
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3 | /////////////////////////////////// NBody::getDeviceInfo Func \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ |
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4 | // |
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5 | // Returns information about the device on which the simulation |
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6 | // will run. Also some variables will be init here based on the |
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7 | // device information. |
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8 | // |
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9 | /////////////////////////////////// NBody::getDeviceInfo Func \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ |
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10 | |
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11 | int NBody::getDeviceInfo() |
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12 | { |
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13 | cl_int status = CL_SUCCESS; |
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14 | |
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15 | cl_char infoString[1024] = {0}; |
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16 | cl_ulong infoLong; |
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17 | cl_uint infoInt; |
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18 | cl_bool infoBool; |
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19 | size_t infoSize_t; |
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20 | size_t *infoSz_t; |
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21 | |
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22 | //---------------------------------- |
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23 | status= clGetDeviceInfo( |
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24 | devices[0], |
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25 | CL_DEVICE_NAME, |
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26 | sizeof(infoString), |
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27 | infoString, |
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28 | NULL); |
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29 | |
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30 | if (status != CL_SUCCESS){ |
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31 | std::cout << "clGetDeviceInfo CL_DEVICE_NAME failed." << std::endl; |
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32 | return 1; |
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33 | }else{ |
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34 | std::cout << "CL_DEVICE_NAME : \t\t" << infoString << std::endl; |
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35 | } |
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36 | |
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37 | //---------------------------------- |
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38 | status = clGetDeviceInfo( |
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39 | devices[0], |
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40 | CL_DEVICE_VENDOR, |
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41 | sizeof(infoString), |
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42 | infoString, |
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43 | NULL); |
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44 | |
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45 | if (status != CL_SUCCESS){ |
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46 | std::cout << "clGetDeviceInfo CL_DEVICE_VENDOR failed." << std::endl; |
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47 | return 1; |
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48 | }else{ |
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49 | std::cout << "CL_DEVICE_VENDOR : \t\t\t" << infoString << std::endl; |
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50 | } |
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51 | |
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52 | //---------------------------------- |
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53 | status = clGetDeviceInfo( |
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54 | devices[0], |
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55 | CL_DRIVER_VERSION, |
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56 | sizeof(infoString), |
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57 | infoString, |
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58 | NULL); |
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59 | |
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60 | if (status != CL_SUCCESS){ |
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61 | std::cout << "clGetDeviceInfo CL_DRIVER_VERSION failed." << std::endl; |
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62 | return 1; |
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63 | }else{ |
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64 | std::cout << "CL_DRIVER_VERSION : \t\t\t" << infoString << std::endl; |
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65 | } |
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66 | |
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67 | //---------------------------------- |
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68 | status = clGetDeviceInfo( |
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69 | devices[0], |
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70 | CL_DEVICE_TYPE, |
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71 | sizeof(cl_device_type), |
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72 | (void*)&infoLong, |
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73 | NULL); |
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74 | |
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75 | if (status != CL_SUCCESS){ |
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76 | std::cout << "clGetDeviceInfo CL_DEVICE_TYPE failed." << std::endl; |
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77 | return 1; |
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78 | }else{ |
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79 | std::cout << "CL_DEVICE_TYPE : \t\t\t"; |
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80 | |
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81 | switch(infoLong){ |
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82 | case CL_DEVICE_TYPE_CPU : std::cout << "CL_DEVICE_TYPE_CPU" << std::endl; |
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83 | break; |
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84 | case CL_DEVICE_TYPE_GPU : std::cout << "CL_DEVICE_TYPE_GPU" << std::endl; |
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85 | break; |
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86 | case CL_DEVICE_TYPE_ACCELERATOR : std::cout << "CL_DEVICE_TYPE_ACCELERATOR" << std::endl; |
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87 | break; |
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88 | case CL_DEVICE_TYPE_ALL : std::cout << "CL_DEVICE_TYPE_ALL" << std::endl; |
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89 | break; |
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90 | case CL_DEVICE_TYPE_DEFAULT : std::cout << "CL_DEVICE_TYPE_DEFAULT" << std::endl; |
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91 | break; |
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92 | } |
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93 | } |
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94 | |
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95 | std::cout << std::endl; |
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96 | |
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97 | //---------------------------------- |
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98 | // The number of parallel compute cores |
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99 | // on the OpenCL device. |
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100 | |
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101 | status = clGetDeviceInfo( |
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102 | devices[0], |
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103 | CL_DEVICE_MAX_COMPUTE_UNITS, |
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104 | sizeof(cl_uint), |
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105 | (void*)&infoInt, |
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106 | NULL); |
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107 | |
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108 | if (status != CL_SUCCESS){ |
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109 | std::cout << "clGetDeviceInfo CL_DEVICE_MAX_COMPUTE_UNITS failed." << std::endl; |
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110 | return 1; |
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111 | }else{ |
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112 | std::cout << "CL_DEVICE_MAX_COMPUTE_UNITS : \t\t" << (size_t)infoInt << std::endl; |
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113 | } |
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114 | |
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115 | //---------------------------------- |
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116 | status = clGetDeviceInfo( |
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117 | devices[0], |
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118 | CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, |
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119 | sizeof(cl_uint), |
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120 | (void*)&maxDimensions, |
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121 | NULL); |
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122 | |
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123 | if (status != CL_SUCCESS){ |
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124 | std::cout << "clGetDeviceInfo CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS failed." << std::endl; |
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125 | return 1; |
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126 | }else{ |
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127 | std::cout << "CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS : \t" << (size_t)maxDimensions << std::endl; |
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128 | } |
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129 | |
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130 | maxWorkItemSizes = (size_t*)malloc(maxDimensions * sizeof(size_t)); |
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131 | |
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132 | //---------------------------------- |
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133 | // Maximum number of work-items that can be |
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134 | // specified in each dimension of the work-group |
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135 | // to clEnqueueNDRangeKernel. |
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136 | |
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137 | status = clGetDeviceInfo( |
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138 | devices[0], |
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139 | CL_DEVICE_MAX_WORK_ITEM_SIZES, |
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140 | sizeof(size_t) * maxDimensions, |
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141 | (void*)maxWorkItemSizes, |
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142 | NULL); |
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143 | |
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144 | if (status != CL_SUCCESS){ |
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145 | std::cout << "clGetDeviceInfo CL_DEVICE_MAX_WORK_ITEM_SIZES failed." << std::endl; |
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146 | return 1; |
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147 | }else{ |
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148 | std::cout << "CL_DEVICE_MAX_WORK_ITEM_SIZES : \t" << (size_t)maxWorkItemSizes << std::endl; |
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149 | } |
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150 | |
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151 | //---------------------------------- |
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152 | // Maximum number of work-items in a work-group |
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153 | // executing a kernel using the data parallel |
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154 | // execution model |
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155 | |
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156 | |
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157 | status = clGetDeviceInfo( |
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158 | devices[0], |
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159 | CL_DEVICE_MAX_WORK_GROUP_SIZE, |
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160 | sizeof(size_t), |
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161 | (void*)&maxWorkGroupSize, |
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162 | NULL); |
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163 | |
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164 | if (status != CL_SUCCESS){ |
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165 | std::cout << "clGetDeviceInfo CL_DEVICE_MAX_WORK_GROUP_SIZE failed." << std::endl; |
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166 | return 1; |
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167 | }else{ |
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168 | std::cout << "CL_DEVICE_MAX_WORK_GROUP_SIZE : \t" << maxWorkGroupSize << std::endl; |
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169 | } |
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170 | |
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171 | std::cout << std::endl; |
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172 | |
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173 | //---------------------------------- |
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174 | // Is CL_TRUE if images are supported by the |
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175 | // OpenCL device and CL_FALSE otherwise. |
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176 | |
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177 | status = clGetDeviceInfo( |
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178 | devices[0], |
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179 | CL_DEVICE_IMAGE_SUPPORT, |
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180 | sizeof(cl_bool), |
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181 | (void *)&infoBool, |
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182 | NULL); |
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183 | |
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184 | if (status != CL_SUCCESS){ |
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185 | std::cout << "clGetDeviceInfo CL_DEVICE_IMAGE_SUPPORT failed." << std::endl; |
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186 | return 1; |
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187 | }else{ |
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188 | if (infoBool == true) |
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189 | std::cout << "CL_DEVICE_IMAGE_SUPPORT : \t\t" << "true" << std::endl; |
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190 | else |
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191 | std::cout << "CL_DEVICE_IMAGE_SUPPORT : \t\t" << "false" << std::endl; |
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192 | } |
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193 | |
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194 | //---------------------------------- |
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195 | // Max width of 2D image in pixels. The minimum |
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196 | // value is 8192 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. |
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197 | |
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198 | status = clGetDeviceInfo( |
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199 | devices[0], |
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200 | CL_DEVICE_IMAGE2D_MAX_WIDTH, |
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201 | sizeof(size_t), |
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202 | (void *)&infoSize_t, |
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203 | NULL); |
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204 | |
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205 | if (status != CL_SUCCESS){ |
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206 | std::cout << "clGetDeviceInfo CL_DEVICE_IMAGE2D_MAX_WIDTH failed." << std::endl; |
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207 | return 1; |
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208 | }else{ |
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209 | std::cout << "CL_DEVICE_IMAGE2D_MAX_WIDTH : \t\t" << (size_t)infoSize_t |
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210 | << " pixels" << std::endl; |
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211 | } |
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212 | |
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213 | //---------------------------------- |
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214 | // Max height of 2D image in pixels. The minimum value |
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215 | // is 8192 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. |
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216 | |
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217 | status = clGetDeviceInfo( |
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218 | devices[0], |
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219 | CL_DEVICE_IMAGE2D_MAX_HEIGHT, |
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220 | sizeof(size_t), |
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221 | (void *)&infoSize_t, |
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222 | NULL); |
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223 | |
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224 | if (status != CL_SUCCESS){ |
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225 | std::cout << "clGetDeviceInfo CL_DEVICE_IMAGE2D_MAX_HEIGHT failed." << std::endl; |
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226 | return 1; |
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227 | }else{ |
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228 | std::cout << "CL_DEVICE_IMAGE2D_MAX_HEIGHT : \t\t" << (size_t)infoSize_t |
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229 | << " pixels" << std::endl; |
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230 | } |
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231 | |
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232 | //---------------------------------- |
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233 | // Max width of 3D image in pixels. The minimum value |
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234 | // is 2048 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. |
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235 | |
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236 | status = clGetDeviceInfo( |
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237 | devices[0], |
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238 | CL_DEVICE_IMAGE3D_MAX_WIDTH, |
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239 | sizeof(size_t), |
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240 | (void *)&infoSize_t, |
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241 | NULL); |
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242 | |
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243 | if (status != CL_SUCCESS){ |
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244 | std::cout << "clGetDeviceInfo CL_DEVICE_IMAGE3D_MAX_WIDTH failed." << std::endl; |
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245 | return 1; |
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246 | }else{ |
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247 | std::cout << "CL_DEVICE_IMAGE3D_MAX_WIDTH : \t\t" << (size_t)infoSize_t |
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248 | << " pixels" << std::endl; |
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249 | } |
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250 | |
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251 | //---------------------------------- |
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252 | // Max height of 3D image in pixels. The minimum value |
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253 | // is 2048 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. |
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254 | |
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255 | status = clGetDeviceInfo( |
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256 | devices[0], |
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257 | CL_DEVICE_IMAGE3D_MAX_HEIGHT, |
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258 | sizeof(size_t), |
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259 | (void *)&infoSize_t, |
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260 | NULL); |
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261 | |
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262 | if (status != CL_SUCCESS){ |
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263 | std::cout << "clGetDeviceInfo CL_DEVICE_IMAGE3D_MAX_HEIGHT failed." << std::endl; |
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264 | return 1; |
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265 | }else{ |
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266 | std::cout << "CL_DEVICE_IMAGE3D_MAX_HEIGHT : \t\t" << (size_t)infoSize_t |
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267 | << " pixels" << std::endl; |
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268 | } |
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269 | |
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270 | //---------------------------------- |
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271 | // Max depth of 3D image in pixels. The minimum value |
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272 | // is 2048 if CL_DEVICE_IMAGE_SUPPORT is CL_TRUE. |
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273 | |
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274 | status = clGetDeviceInfo( |
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275 | devices[0], |
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276 | CL_DEVICE_IMAGE3D_MAX_DEPTH, |
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277 | sizeof(size_t), |
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278 | (void *)&infoSize_t, |
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279 | NULL); |
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280 | |
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281 | if (status != CL_SUCCESS){ |
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282 | std::cout << "clGetDeviceInfo CL_DEVICE_IMAGE3D_MAX_DEPTH failed." << std::endl; |
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283 | return 1; |
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284 | }else{ |
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285 | std::cout << "CL_DEVICE_IMAGE3D_MAX_DEPTH : \t\t" << (size_t)infoSize_t |
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286 | << " pixels" << std::endl; |
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287 | } |
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288 | |
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289 | std::cout << std::endl; |
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290 | |
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291 | //---------------------------------- |
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292 | status = clGetDeviceInfo( |
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293 | devices[0], |
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294 | CL_DEVICE_MAX_CLOCK_FREQUENCY, |
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295 | sizeof(cl_uint), |
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296 | (void *)&infoInt, |
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297 | NULL); |
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298 | |
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299 | if (status != CL_SUCCESS){ |
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300 | std::cout << "clGetDeviceInfo CL_DEVICE_MAX_CLOCK_FREQUENCY failed." << std::endl; |
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301 | return 1; |
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302 | }else{ |
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303 | std::cout << "CL_DEVICE_MAX_CLOCK_FREQUENCY : \t" << infoInt << " MHz" << std::endl; |
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304 | } |
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305 | |
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306 | //---------------------------------- |
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307 | // Size of global device memory in bytes. |
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308 | |
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309 | status = clGetDeviceInfo( |
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310 | devices[0], |
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311 | CL_DEVICE_GLOBAL_MEM_SIZE, |
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312 | sizeof(cl_ulong), |
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313 | (void *)&infoLong, |
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314 | NULL); |
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315 | |
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316 | if (status != CL_SUCCESS){ |
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317 | std::cout << "clGetDeviceInfo CL_DEVICE_GLOBAL_MEM_SIZE failed." << std::endl; |
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318 | return 1; |
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319 | }else{ |
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320 | std::cout << "CL_DEVICE_GLOBAL_MEM_SIZE : \t\t" << infoLong << " bytes" << std::endl; |
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321 | } |
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322 | |
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323 | //---------------------------------- |
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324 | // Size of local memory arena in bytes. |
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325 | // The minimum value is 16 KB. |
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326 | |
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327 | status = clGetDeviceInfo( |
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328 | devices[0], |
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329 | CL_DEVICE_LOCAL_MEM_SIZE, |
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330 | sizeof(cl_ulong), |
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331 | (void *)&totalLocalMemory, |
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332 | NULL); |
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333 | |
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334 | if (status != CL_SUCCESS){ |
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335 | std::cout << "clGetDeviceInfo CL_DEVICE_LOCAL_MEM_SIZE failed." << std::endl; |
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336 | return 1; |
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337 | }else{ |
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338 | std::cout << "CL_DEVICE_LOCAL_MEM_SIZE : \t\t" << totalLocalMemory << " bytes" << std::endl; |
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339 | } |
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340 | |
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341 | return 0; |
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342 | } |
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