[34] | 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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