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<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_fdedb0aba14d44ce9d99bc100e026e6a.html">common</a></li> </ul>
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<div class="title">cuda_utils.h</div> </div>
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<a href="cuda__utils_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;</div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#ifndef MXNET_COMMON_CUDA_UTILS_H_</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define MXNET_COMMON_CUDA_UTILS_H_</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &lt;dmlc/logging.h&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;mshadow/base.h&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#ifdef __JETBRAINS_IDE__</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __CUDACC__ 1</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __host__</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __device__</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __global__</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __forceinline__</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __shared__</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor"></span><span class="keyword">inline</span> <span class="keywordtype">void</span> __syncthreads() {}</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> __threadfence_block() {}</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">class</span> T&gt; <span class="keyword">inline</span> T __clz(<span class="keyword">const</span> T val) { <span class="keywordflow">return</span> val; }</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="keyword">struct </span>__cuda_fake_struct { <span class="keywordtype">int</span> x; <span class="keywordtype">int</span> y; <span class="keywordtype">int</span> z; };</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="keyword">extern</span> __cuda_fake_struct blockDim;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keyword">extern</span> __cuda_fake_struct threadIdx;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keyword">extern</span> __cuda_fake_struct blockIdx;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#if MXNET_USE_CUDA</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &lt;cuda_runtime.h&gt;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#include &lt;cublas_v2.h&gt;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="preprocessor">#include &lt;curand.h&gt;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="keyword">namespace </span>mxnet {</div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="namespacemxnet_1_1common.html"> 36</a></span>&#160;<span class="keyword">namespace </span>common {</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="namespacemxnet_1_1common_1_1cuda.html"> 38</a></span>&#160;<span class="keyword">namespace </span>cuda {</div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="namespacemxnet_1_1common_1_1cuda.html#a9feee613a4f16a954dd68e55345a72ac"> 44</a></span>&#160;<span class="keyword">inline</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="namespacemxnet_1_1common_1_1cuda.html#a9feee613a4f16a954dd68e55345a72ac">CublasGetErrorString</a>(cublasStatus_t error) {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordflow">switch</span> (error) {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_SUCCESS:</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_SUCCESS&quot;</span>;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_NOT_INITIALIZED:</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_NOT_INITIALIZED&quot;</span>;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_ALLOC_FAILED:</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_ALLOC_FAILED&quot;</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_INVALID_VALUE:</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_INVALID_VALUE&quot;</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_ARCH_MISMATCH:</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_ARCH_MISMATCH&quot;</span>;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_MAPPING_ERROR:</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_MAPPING_ERROR&quot;</span>;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_EXECUTION_FAILED:</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_EXECUTION_FAILED&quot;</span>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_INTERNAL_ERROR:</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_INTERNAL_ERROR&quot;</span>;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordflow">case</span> CUBLAS_STATUS_NOT_SUPPORTED:</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CUBLAS_STATUS_NOT_SUPPORTED&quot;</span>;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;Unknown cuBLAS status&quot;</span>;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;}</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="namespacemxnet_1_1common_1_1cuda.html#a97c06b2f4d26445a7386b0f54fae1feb"> 75</a></span>&#160;<span class="keyword">inline</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="namespacemxnet_1_1common_1_1cuda.html#a97c06b2f4d26445a7386b0f54fae1feb">CurandGetErrorString</a>(curandStatus_t status) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">switch</span> (status) {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_SUCCESS:</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_SUCCESS&quot;</span>;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_VERSION_MISMATCH:</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_VERSION_MISMATCH&quot;</span>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_NOT_INITIALIZED:</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_NOT_INITIALIZED&quot;</span>;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_ALLOCATION_FAILED:</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_ALLOCATION_FAILED&quot;</span>;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_TYPE_ERROR:</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_TYPE_ERROR&quot;</span>;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_OUT_OF_RANGE:</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_OUT_OF_RANGE&quot;</span>;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_LENGTH_NOT_MULTIPLE:</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_LENGTH_NOT_MULTIPLE&quot;</span>;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_DOUBLE_PRECISION_REQUIRED:</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_DOUBLE_PRECISION_REQUIRED&quot;</span>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_LAUNCH_FAILURE:</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_LAUNCH_FAILURE&quot;</span>;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_PREEXISTING_FAILURE:</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_PREEXISTING_FAILURE&quot;</span>;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_INITIALIZATION_FAILED:</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_INITIALIZATION_FAILED&quot;</span>;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_ARCH_MISMATCH:</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_ARCH_MISMATCH&quot;</span>;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">case</span> CURAND_STATUS_INTERNAL_ERROR:</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;CURAND_STATUS_INTERNAL_ERROR&quot;</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">return</span> <span class="stringliteral">&quot;Unknown cuRAND status&quot;</span>;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;} <span class="comment">// namespace cuda</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;} <span class="comment">// namespace common</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;} <span class="comment">// namespace mxnet</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="cuda__utils_8h.html#afc69a418242c5b851993bc2307b1c897"> 115</a></span>&#160;<span class="preprocessor">#define CHECK_CUDA_ERROR(msg) \</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="preprocessor"> { \</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="preprocessor"> cudaError_t e = cudaGetLastError(); \</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="preprocessor"> CHECK_EQ(e, cudaSuccess) &lt;&lt; (msg) &lt;&lt; &quot; CUDA: &quot; &lt;&lt; cudaGetErrorString(e); \</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="preprocessor"> }</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="cuda__utils_8h.html#a06cc7d24ca66505e69f5ad40009f5e8d"> 127</a></span>&#160;<span class="preprocessor">#define CUDA_CALL(func) \</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="preprocessor"> { \</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="preprocessor"> cudaError_t e = (func); \</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="preprocessor"> CHECK(e == cudaSuccess || e == cudaErrorCudartUnloading) \</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="preprocessor"> &lt;&lt; &quot;CUDA: &quot; &lt;&lt; cudaGetErrorString(e); \</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="preprocessor"> }</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="cuda__utils_8h.html#a685d7ca3c9370ff471665abcacdeb381"> 140</a></span>&#160;<span class="preprocessor">#define CUBLAS_CALL(func) \</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="preprocessor"> { \</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="preprocessor"> cublasStatus_t e = (func); \</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="preprocessor"> CHECK_EQ(e, CUBLAS_STATUS_SUCCESS) \</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="preprocessor"> &lt;&lt; &quot;cuBLAS: &quot; &lt;&lt; common::cuda::CublasGetErrorString(e); \</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="preprocessor"> }</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00153"></a><span class="lineno"><a class="line" href="cuda__utils_8h.html#a82d7233550780a8c186e79c24aed8406"> 153</a></span>&#160;<span class="preprocessor">#define CURAND_CALL(func) \</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="preprocessor"> { \</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="preprocessor"> curandStatus_t e = (func); \</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="preprocessor"> CHECK_EQ(e, CURAND_STATUS_SUCCESS) \</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="preprocessor"> &lt;&lt; &quot;cuRAND: &quot; &lt;&lt; common::cuda::CurandGetErrorString(e); \</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="preprocessor"> }</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="preprocessor">#endif // MXNET_USE_CUDA</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="preprocessor">#if MXNET_USE_CUDNN</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="preprocessor">#include &lt;cudnn.h&gt;</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="preprocessor">#define CUDNN_CALL(func) \</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="preprocessor"> { \</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="preprocessor"> cudnnStatus_t e = (func); \</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="preprocessor"> CHECK_EQ(e, CUDNN_STATUS_SUCCESS) &lt;&lt; &quot;cuDNN: &quot; &lt;&lt; cudnnGetErrorString(e); \</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="preprocessor"> }</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="preprocessor">#endif // MXNET_USE_CUDNN</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="comment">// Overload atomicAdd to work for floats on all architectures</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="preprocessor">#if defined(__CUDA_ARCH__) &amp;&amp; __CUDA_ARCH__ &lt; 600</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;<span class="preprocessor"></span><span class="comment">// From CUDA Programming Guide</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> __device__ <span class="keywordtype">void</span> atomicAdd(<span class="keywordtype">double</span> *address, <span class="keywordtype">double</span> val) {</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>* address_as_ull = <span class="comment">// NOLINT(*)</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>*<span class="keyword">&gt;</span>(address); <span class="comment">// NOLINT(*)</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> old = *address_as_ull; <span class="comment">// NOLINT(*)</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> assumed; <span class="comment">// NOLINT(*)</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; assumed = old;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; old = atomicCAS(address_as_ull, assumed,</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; __double_as_longlong(val +</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; __longlong_as_double(assumed)));</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <span class="comment">// Note: uses integer comparison to avoid hang in case of NaN (since NaN != NaN)</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; } <span class="keywordflow">while</span> (assumed != old);</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;}</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;<span class="comment">// Overload atomicAdd for half precision</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;<span class="comment">// Taken from:</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="comment">// https://github.com/torch/cutorch/blob/master/lib/THC/THCAtomics.cuh</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;<span class="preprocessor">#if defined(__CUDA_ARCH__)</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;<span class="preprocessor"></span><span class="keyword">static</span> <span class="keyword">inline</span> __device__ <span class="keywordtype">void</span> atomicAdd(mshadow::half::half_t *address,</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; mshadow::half::half_t val) {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *address_as_ui =</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *<span class="keyword">&gt;</span>(<span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">char</span> *<span class="keyword">&gt;</span>(address) -</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; (reinterpret_cast&lt;size_t&gt;(address) &amp; 2));</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> old = *address_as_ui;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> assumed;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; assumed = old;</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; mshadow::half::half_t hsum;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; hsum.half_ =</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">size_t</span><span class="keyword">&gt;</span>(address) &amp; 2 ? (old &gt;&gt; 16) : (old &amp; 0xffff);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; hsum += val;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; old = <span class="keyword">reinterpret_cast&lt;</span><span class="keywordtype">size_t</span><span class="keyword">&gt;</span>(address) &amp; 2</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; ? (old &amp; 0xffff) | (hsum.half_ &lt;&lt; 16)</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; : (old &amp; 0xffff0000) | hsum.half_;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; old = atomicCAS(address_as_ui, assumed, old);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; } <span class="keywordflow">while</span> (assumed != old);</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160;}</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;<span class="preprocessor">#endif // MXNET_COMMON_CUDA_UTILS_H_</span></div>
<div class="ttc" id="namespacemxnet_1_1common_1_1cuda_html_a97c06b2f4d26445a7386b0f54fae1feb"><div class="ttname"><a href="namespacemxnet_1_1common_1_1cuda.html#a97c06b2f4d26445a7386b0f54fae1feb">mxnet::common::cuda::CurandGetErrorString</a></div><div class="ttdeci">const char * CurandGetErrorString(curandStatus_t status)</div><div class="ttdoc">Get string representation of cuRAND errors. </div><div class="ttdef"><b>Definition:</b> cuda_utils.h:75</div></div>
<div class="ttc" id="namespacemxnet_1_1common_1_1cuda_html_a9feee613a4f16a954dd68e55345a72ac"><div class="ttname"><a href="namespacemxnet_1_1common_1_1cuda.html#a9feee613a4f16a954dd68e55345a72ac">mxnet::common::cuda::CublasGetErrorString</a></div><div class="ttdeci">const char * CublasGetErrorString(cublasStatus_t error)</div><div class="ttdoc">Get string representation of cuBLAS errors. </div><div class="ttdef"><b>Definition:</b> cuda_utils.h:44</div></div>
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