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<div class="title">nmf.hpp</div> </div>
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<a href="opencl_2kernels_2nmf_8hpp.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="preprocessor">#ifndef VIENNACL_LINALG_OPENCL_KERNELS_NMF_HPP</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define VIENNACL_LINALG_OPENCL_KERNELS_NMF_HPP</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/* =========================================================================</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Copyright (c) 2010-2016, Institute for Microelectronics,</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Institute for Analysis and Scientific Computing,</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> TU Wien.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> Portions of this software are copyright by UChicago Argonne, LLC.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> -----------------</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> ViennaCL - The Vienna Computing Library</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> -----------------</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> Project Head: Karl Rupp rupp@iue.tuwien.ac.at</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> (A list of authors and contributors can be found in the manual)</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"></span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> License: MIT (X11), see file LICENSE in the base directory</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">============================================================================= */</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="tools_8hpp.html">viennacl/tools/tools.hpp</a>"</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "<a class="code" href="kernel_8hpp.html">viennacl/ocl/kernel.hpp</a>"</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="platform_8hpp.html">viennacl/ocl/platform.hpp</a>"</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="ocl_2utils_8hpp.html">viennacl/ocl/utils.hpp</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span>viennacl</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>linalg</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">namespace </span>opencl</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>kernels</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">template</span><<span class="keyword">typename</span> StringT></div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels.html#a2a18b14d636474012cbb5cd6c160c282"> 38</a></span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels.html#a2a18b14d636474012cbb5cd6c160c282">generate_nmf_el_wise_mul_div</a>(StringT & source, std::string <span class="keyword">const</span> & numeric_string)</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  source.append(<span class="stringliteral">"__kernel void el_wise_mul_div( \n"</span>);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  source.append(<span class="stringliteral">" __global "</span>); source.append(numeric_string); source.append(<span class="stringliteral">" * matrix1, \n"</span>);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  source.append(<span class="stringliteral">" __global const "</span>); source.append(numeric_string); source.append(<span class="stringliteral">" * matrix2, \n"</span>);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  source.append(<span class="stringliteral">" __global const "</span>); source.append(numeric_string); source.append(<span class="stringliteral">" * matrix3, \n"</span>);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  source.append(<span class="stringliteral">" unsigned int size) \n"</span>);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  source.append(<span class="stringliteral">"{ \n"</span>);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  source.append(<span class="stringliteral">" for (unsigned int i = get_global_id(0); i < size; i += get_global_size(0)) \n"</span>);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  source.append(<span class="stringliteral">" { \n"</span>);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  source.append(<span class="stringliteral">" "</span>); source.append(numeric_string); source.append(<span class="stringliteral">" val = matrix1[i] * matrix2[i]; \n"</span>);</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  source.append(<span class="stringliteral">" "</span>); source.append(numeric_string); source.append(<span class="stringliteral">" divisor = matrix3[i]; \n"</span>);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  source.append(<span class="stringliteral">" matrix1[i] = (divisor > ("</span>); source.append(numeric_string); source.append(<span class="stringliteral">")0.00001) ? (val / divisor) : ("</span>); source.append(numeric_string); source.append(<span class="stringliteral">")0; \n"</span>);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  source.append(<span class="stringliteral">" } \n"</span>);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  source.append(<span class="stringliteral">"} \n"</span>);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> }</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// main kernel class</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span><span class="keyword">template</span><<span class="keyword">typename</span> NumericT></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html"> 58</a></span> <span class="keyword">struct </span><a class="code" href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html">nmf</a></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> {</div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html#a18050ccde8740645424ec2034ef541d2"> 60</a></span>  <span class="keyword">static</span> std::string <a class="code" href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html#a18050ccde8740645424ec2034ef541d2">program_name</a>()</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span> <a class="code" href="structviennacl_1_1ocl_1_1type__to__string.html">viennacl::ocl::type_to_string<NumericT>::apply</a>() + <span class="stringliteral">"_nmf"</span>;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html#a0d2f598ecdc3504063da3351491b2a79"> 65</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html#a0d2f598ecdc3504063da3351491b2a79">init</a>(<a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & ctx)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">static</span> std::map<cl_context, bool> init_done;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">if</span> (!init_done[ctx.<a class="code" href="classviennacl_1_1ocl_1_1context.html#a611d95b11db04230f63e37bfeae911db">handle</a>().<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>()])</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html#ae23d18c854e1df43cd329a5c1fdd6d9f">viennacl::ocl::DOUBLE_PRECISION_CHECKER<NumericT>::apply</a>(ctx);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  std::string numeric_string = <a class="code" href="structviennacl_1_1ocl_1_1type__to__string.html">viennacl::ocl::type_to_string<NumericT>::apply</a>();</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  std::string source;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  source.reserve(8192);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  viennacl::ocl::append_double_precision_pragma<NumericT>(ctx, source);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// only generate for floating points (forces error for integers)</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (numeric_string == <span class="stringliteral">"float"</span> || numeric_string == <span class="stringliteral">"double"</span>)</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>  <a class="code" href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels.html#a2a18b14d636474012cbb5cd6c160c282">generate_nmf_el_wise_mul_div</a>(source, numeric_string);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  std::string prog_name = <a class="code" href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html#a18050ccde8740645424ec2034ef541d2">program_name</a>();</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor"> #ifdef VIENNACL_BUILD_INFO</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  std::cout << <span class="stringliteral">"Creating program "</span> << prog_name << std::endl;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor"> #endif</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  ctx.add_program(source, prog_name);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  init_done[ctx.handle().get()] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  } <span class="comment">//if</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  } <span class="comment">//init</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> </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> } <span class="comment">// namespace kernels</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> } <span class="comment">// namespace opencl</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> } <span class="comment">// namespace linalg</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> } <span class="comment">// namespace viennacl</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="ttc" id="platform_8hpp_html"><div class="ttname"><a href="platform_8hpp.html">platform.hpp</a></div><div class="ttdoc">Implements a OpenCL platform within ViennaCL. </div></div>
<div class="ttc" id="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels_html_a2a18b14d636474012cbb5cd6c160c282"><div class="ttname"><a href="namespaceviennacl_1_1linalg_1_1opencl_1_1kernels.html#a2a18b14d636474012cbb5cd6c160c282">viennacl::linalg::opencl::kernels::generate_nmf_el_wise_mul_div</a></div><div class="ttdeci">void generate_nmf_el_wise_mul_div(StringT &source, std::string const &numeric_string)</div><div class="ttdef"><b>Definition:</b> <a href="opencl_2kernels_2nmf_8hpp_source.html#l00038">nmf.hpp:38</a></div></div>
<div class="ttc" id="tools_8hpp_html"><div class="ttname"><a href="tools_8hpp.html">tools.hpp</a></div><div class="ttdoc">Various little tools used here and there in ViennaCL. </div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a></div><div class="ttdoc">Manages an OpenCL context and provides the respective convenience functions for creating buffers...</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00055">context.hpp:55</a></div></div>
<div class="ttc" id="ocl_2utils_8hpp_html"><div class="ttname"><a href="ocl_2utils_8hpp.html">utils.hpp</a></div><div class="ttdoc">Provides OpenCL-related utilities. </div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_a611d95b11db04230f63e37bfeae911db"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#a611d95b11db04230f63e37bfeae911db">viennacl::ocl::context::handle</a></div><div class="ttdeci">const viennacl::ocl::handle< cl_context > & handle() const </div><div class="ttdoc">Returns the context handle. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00611">context.hpp:611</a></div></div>
<div class="ttc" id="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf_html_a18050ccde8740645424ec2034ef541d2"><div class="ttname"><a href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html#a18050ccde8740645424ec2034ef541d2">viennacl::linalg::opencl::kernels::nmf::program_name</a></div><div class="ttdeci">static std::string program_name()</div><div class="ttdef"><b>Definition:</b> <a href="opencl_2kernels_2nmf_8hpp_source.html#l00060">nmf.hpp:60</a></div></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r_html_ae23d18c854e1df43cd329a5c1fdd6d9f"><div class="ttname"><a href="structviennacl_1_1ocl_1_1_d_o_u_b_l_e___p_r_e_c_i_s_i_o_n___c_h_e_c_k_e_r.html#ae23d18c854e1df43cd329a5c1fdd6d9f">viennacl::ocl::DOUBLE_PRECISION_CHECKER::apply</a></div><div class="ttdeci">static void apply(viennacl::ocl::context const &)</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2utils_8hpp_source.html#l00040">utils.hpp:40</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1handle_html_a5074caaee700015fc2d3b03540b01673"><div class="ttname"><a href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">viennacl::ocl::handle::get</a></div><div class="ttdeci">const OCL_TYPE & get() const </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2handle_8hpp_source.html#l00191">handle.hpp:191</a></div></div>
<div class="ttc" id="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf_html"><div class="ttname"><a href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html">viennacl::linalg::opencl::kernels::nmf</a></div><div class="ttdoc">Main kernel class for generating OpenCL kernels for nonnegative matrix factorization of a dense matri...</div><div class="ttdef"><b>Definition:</b> <a href="opencl_2kernels_2nmf_8hpp_source.html#l00058">nmf.hpp:58</a></div></div>
<div class="ttc" id="kernel_8hpp_html"><div class="ttname"><a href="kernel_8hpp.html">kernel.hpp</a></div><div class="ttdoc">Representation of an OpenCL kernel in ViennaCL. </div></div>
<div class="ttc" id="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf_html_a0d2f598ecdc3504063da3351491b2a79"><div class="ttname"><a href="structviennacl_1_1linalg_1_1opencl_1_1kernels_1_1nmf.html#a0d2f598ecdc3504063da3351491b2a79">viennacl::linalg::opencl::kernels::nmf::init</a></div><div class="ttdeci">static void init(viennacl::ocl::context &ctx)</div><div class="ttdef"><b>Definition:</b> <a href="opencl_2kernels_2nmf_8hpp_source.html#l00065">nmf.hpp:65</a></div></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1type__to__string_html"><div class="ttname"><a href="structviennacl_1_1ocl_1_1type__to__string.html">viennacl::ocl::type_to_string</a></div><div class="ttdoc">Helper class for converting a type to its string representation. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2utils_8hpp_source.html#l00057">utils.hpp:57</a></div></div>
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