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<li class="navelem"><a class="el" href="dir_1417ee5ebebc309c36b7962f26a92c39.html">cutlass</a></li><li class="navelem"><a class="el" href="dir_18d6a367a3982a494d65599933fc67a3.html">gemm</a></li> </ul>
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<a href="hgemm__swizzle_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> <span class="comment">/***************************************************************************************************</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification, are permitted</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * provided that the following conditions are met:</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * * Redistributions of source code must retain the above copyright notice, this list of</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * conditions and the following disclaimer.</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * * Redistributions in binary form must reproduce the above copyright notice, this list of</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * conditions and the following disclaimer in the documentation and/or other materials</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * provided with the distribution.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * to endorse or promote products derived from this software without specific prior written</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * permission.</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> *</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> *</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> **************************************************************************************************/</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#pragma once</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <cuda_fp16.h></span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="fragment_8h.html">cutlass/fragment.h</a>"</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">namespace </span><a class="code" href="namespacecutlass.html">cutlass</a> {</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>gemm {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">template</span> <<span class="keyword">typename</span> GlobalIterator_></div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html"> 40</a></span> <span class="keyword">struct </span><a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html">HgemmSwizzle</a> {</div><div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a56d3f2606f9464ec57aa61aae378c642"> 42</a></span>  <span class="keyword">typedef</span> GlobalIterator_ <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a56d3f2606f9464ec57aa61aae378c642">GlobalIterator</a>;</div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a82dc6d9a10de7aba9a69e6025b2cc2b7"> 44</a></span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> GlobalIterator::Fragment <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a82dc6d9a10de7aba9a69e6025b2cc2b7">Fragment</a>;</div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#afe44fedcf24b90c0cf6ac7d1495b89e4"> 46</a></span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> GlobalIterator::FragmentShape <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#afe44fedcf24b90c0cf6ac7d1495b89e4">FragmentShape</a>;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ab5fab63d83eb0444c08bda16491d2627"> 49</a></span>  <span class="keyword">typedef</span> <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a82dc6d9a10de7aba9a69e6025b2cc2b7">Fragment</a> <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ab5fab63d83eb0444c08bda16491d2627">InputFragment</a>;</div><div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a9c04f0b0eb0293325f661b72168d4fa8"> 51</a></span>  <span class="keyword">typedef</span> <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a82dc6d9a10de7aba9a69e6025b2cc2b7">Fragment</a> <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a9c04f0b0eb0293325f661b72168d4fa8">OutputFragment</a>;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="platform_8h.html#adde4c9ea91b753491851361a4198c009">static_assert</a>((<a class="code" href="structcutlass_1_1platform_1_1is__same.html">platform::is_same<typename Fragment::Element, half>::value</a>), <span class="stringliteral">"Works on half"</span>);</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <a class="code" href="platform_8h.html#adde4c9ea91b753491851361a4198c009">static_assert</a>(FragmentShape::kH == 2 && <a class="code" href="structcutlass_1_1ShapeCount.html">ShapeCount<FragmentShape>::kWc</a> == 2, <span class="stringliteral">"Not multiple of 2"</span>);</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ac3c52e0fee9b37a3dfc39ca168a63d36"> 60</a></span>  CUTLASS_DEVICE <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ac3c52e0fee9b37a3dfc39ca168a63d36">HgemmSwizzle</a>() {}</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ad467ce744bf9d478900fb2661d7a1c26"> 63</a></span>  CUTLASS_DEVICE <span class="keywordtype">void</span> <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ad467ce744bf9d478900fb2661d7a1c26">transform</a>(<a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a82dc6d9a10de7aba9a69e6025b2cc2b7">Fragment</a> <span class="keyword">const</span>& src, <a class="code" href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a82dc6d9a10de7aba9a69e6025b2cc2b7">Fragment</a>& dst) {</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// Expose src/dst as int arrays.</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">int</span> <span class="keyword">const</span>* src_int = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">int</span> const*<span class="keyword">></span>(&src[0]);</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">int</span>* dst_int = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">int</span>*<span class="keyword">></span>(&dst[0]);</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// Transpose the data.</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> d = 0; d < FragmentShape::kD; ++d) {</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// The indices to read two consecutive "rows".</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordtype">int</span> <span class="keyword">const</span> i0 = 2 * d + 0;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">int</span> <span class="keyword">const</span> i1 = 2 * d + 1;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">int</span> a0 = src_int[i0];</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">int</span> a1 = src_int[i1];</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">int</span> b0, b1;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(<span class="stringliteral">"prmt.b32 %0, %1, %2, 0x5410;"</span> : <span class="stringliteral">"=r"</span>(b0) : <span class="stringliteral">"r"</span>(a0), <span class="stringliteral">"r"</span>(a1));</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">asm</span> <span class="keyword">volatile</span>(<span class="stringliteral">"prmt.b32 %0, %1, %2, 0x7632;"</span> : <span class="stringliteral">"=r"</span>(b1) : <span class="stringliteral">"r"</span>(a0), <span class="stringliteral">"r"</span>(a1));</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// The indices to store with "strides".</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">int</span> <span class="keyword">const</span> j0 = 0 * (<a class="code" href="structcutlass_1_1ShapeCount.html">ShapeCount<FragmentShape>::kDhw</a> / 2) + d;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">int</span> <span class="keyword">const</span> j1 = 1 * (<a class="code" href="structcutlass_1_1ShapeCount.html">ShapeCount<FragmentShape>::kDhw</a> / 2) + d;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  dst_int[j0] = b0;</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  dst_int[j1] = b1;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> };</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> } <span class="comment">// namespace gemm</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> } <span class="comment">// namespace cutlass</span></div><div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html_a56d3f2606f9464ec57aa61aae378c642"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a56d3f2606f9464ec57aa61aae378c642">cutlass::gemm::HgemmSwizzle::GlobalIterator</a></div><div class="ttdeci">GlobalIterator_ GlobalIterator</div><div class="ttdoc">The global iterator. </div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:42</div></div>
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<div class="ttc" id="namespacecutlass_html"><div class="ttname"><a href="namespacecutlass.html">cutlass</a></div><div class="ttdef"><b>Definition:</b> convert.h:33</div></div>
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<div class="ttc" id="structcutlass_1_1platform_1_1is__same_html"><div class="ttname"><a href="structcutlass_1_1platform_1_1is__same.html">cutlass::platform::is_same</a></div><div class="ttdoc">std::is_same (false specialization) </div><div class="ttdef"><b>Definition:</b> platform.h:420</div></div>
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<div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html_ac3c52e0fee9b37a3dfc39ca168a63d36"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ac3c52e0fee9b37a3dfc39ca168a63d36">cutlass::gemm::HgemmSwizzle::HgemmSwizzle</a></div><div class="ttdeci">CUTLASS_DEVICE HgemmSwizzle()</div><div class="ttdoc">The src/dst must be half fragments. </div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:60</div></div>
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<div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html_ad467ce744bf9d478900fb2661d7a1c26"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ad467ce744bf9d478900fb2661d7a1c26">cutlass::gemm::HgemmSwizzle::transform</a></div><div class="ttdeci">CUTLASS_DEVICE void transform(Fragment const &src, Fragment &dst)</div><div class="ttdoc">Transform a fragment. </div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:63</div></div>
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<div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html_ab5fab63d83eb0444c08bda16491d2627"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#ab5fab63d83eb0444c08bda16491d2627">cutlass::gemm::HgemmSwizzle::InputFragment</a></div><div class="ttdeci">Fragment InputFragment</div><div class="ttdoc">The input fragment. </div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:49</div></div>
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<div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html_a9c04f0b0eb0293325f661b72168d4fa8"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a9c04f0b0eb0293325f661b72168d4fa8">cutlass::gemm::HgemmSwizzle::OutputFragment</a></div><div class="ttdeci">Fragment OutputFragment</div><div class="ttdoc">The output fragment. </div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:51</div></div>
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<div class="ttc" id="platform_8h_html_adde4c9ea91b753491851361a4198c009"><div class="ttname"><a href="platform_8h.html#adde4c9ea91b753491851361a4198c009">static_assert</a></div><div class="ttdeci">#define static_assert(__e, __m)</div><div class="ttdef"><b>Definition:</b> platform.h:153</div></div>
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<div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html_a82dc6d9a10de7aba9a69e6025b2cc2b7"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#a82dc6d9a10de7aba9a69e6025b2cc2b7">cutlass::gemm::HgemmSwizzle::Fragment</a></div><div class="ttdeci">GlobalIterator::Fragment Fragment</div><div class="ttdoc">The source fragment. </div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:44</div></div>
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<div class="ttc" id="fragment_8h_html"><div class="ttname"><a href="fragment_8h.html">fragment.h</a></div><div class="ttdoc">Defines Fragment, a statically-sized array for storing parts of matrices within a thread&#39;s registers...</div></div>
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<div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html_afe44fedcf24b90c0cf6ac7d1495b89e4"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html#afe44fedcf24b90c0cf6ac7d1495b89e4">cutlass::gemm::HgemmSwizzle::FragmentShape</a></div><div class="ttdeci">GlobalIterator::FragmentShape FragmentShape</div><div class="ttdoc">The shape of the source fragment. </div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:46</div></div>
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<div class="ttc" id="structcutlass_1_1ShapeCount_html"><div class="ttname"><a href="structcutlass_1_1ShapeCount.html">cutlass::ShapeCount</a></div><div class="ttdoc">Compute derived counted of a Layout Concept based class. </div><div class="ttdef"><b>Definition:</b> shape.h:79</div></div>
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<div class="ttc" id="structcutlass_1_1gemm_1_1HgemmSwizzle_html"><div class="ttname"><a href="structcutlass_1_1gemm_1_1HgemmSwizzle.html">cutlass::gemm::HgemmSwizzle</a></div><div class="ttdef"><b>Definition:</b> hgemm_swizzle.h:40</div></div>
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