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 <span id="projectnumber">1.7.1</span>
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<div class="title">backend.hpp</div> </div>
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<a href="backend_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_OCL_BACKEND_HPP_</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define VIENNACL_OCL_BACKEND_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="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="ocl_2context_8hpp.html">viennacl/ocl/context.hpp</a>"</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="enqueue_8hpp.html">viennacl/ocl/enqueue.hpp</a>"</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span>viennacl</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="keyword">namespace </span>ocl</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> {</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">template</span><<span class="keywordtype">bool</span> dummy = false> <span class="comment">//never use parameter other than default (introduced for linkage issues only)</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html"> 36</a></span> <span class="keyword">class </span><a class="code" href="classviennacl_1_1ocl_1_1backend.html">backend</a></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> {</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#a98751b295283a62225247a3822a7c9a4"> 43</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a98751b295283a62225247a3822a7c9a4">switch_context</a>(<span class="keywordtype">long</span> i)</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  current_context_id_ = i;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  }</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="classviennacl_1_1ocl_1_1backend.html#a2624fd8cbca3bd89ca5211947d7f04b6"> 49</a></span>  <span class="keyword">static</span> <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a2624fd8cbca3bd89ca5211947d7f04b6">context</a>(<span class="keywordtype">long</span> <span class="keywordtype">id</span>)</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">if</span> (!initialized_[<span class="keywordtype">id</span>])</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#if defined(VIENNACL_DEBUG_ALL) || defined(VIENNACL_DEBUG_CONTEXT)</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  std::cout << <span class="stringliteral">"ViennaCL: Initializing context no. "</span> << <span class="keywordtype">id</span> << std::endl;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  contexts_[id].init();</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">//create one queue per device:</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  std::vector<viennacl::ocl::device> devices = contexts_[id].devices();</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">for</span> (<a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> j = 0; j<devices.size(); ++j)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  contexts_[<span class="keywordtype">id</span>].add_queue(devices[j]);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  initialized_[id] = <span class="keyword">true</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> <span class="preprocessor">#if defined(VIENNACL_DEBUG_ALL) || defined(VIENNACL_DEBUG_CONTEXT)</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  std::cout << <span class="stringliteral">"ViennaCL: Context no. "</span> << <span class="keywordtype">id</span> << <span class="stringliteral">" initialized with "</span> << devices.size() << <span class="stringliteral">" devices"</span> << std::endl;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  std::cout << <span class="stringliteral">"ViennaCL: Device id: "</span> << devices[0].id() << std::endl;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> contexts_[id];</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#ab23aa4155950ebb8db086096b15b1850"> 73</a></span>  <span class="keyword">static</span> <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & <a class="code" href="classviennacl_1_1ocl_1_1backend.html#ab23aa4155950ebb8db086096b15b1850">current_context</a>()</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  {</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor">#if defined(VIENNACL_DEBUG_ALL) || defined(VIENNACL_DEBUG_CONTEXT)</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  std::cout << <span class="stringliteral">"ViennaCL: Getting current_context with id "</span> << current_context_id_ << std::endl;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#if defined(VIENNACL_NO_CURRENT_CONTEXT)</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  assert(<span class="keyword">false</span> && <span class="keywordtype">bool</span>(<span class="stringliteral">"ViennaCL: current_context called when disabled"</span>));</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a2624fd8cbca3bd89ca5211947d7f04b6">backend<dummy>::context</a>(current_context_id_);</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="l00085"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#ac7b0811b5dc15e39ae5c4cda5fde780f"> 85</a></span>  <span class="keyword">static</span> <a class="code" href="classviennacl_1_1ocl_1_1command__queue.html">viennacl::ocl::command_queue</a> & <a class="code" href="classviennacl_1_1ocl_1_1backend.html#ac7b0811b5dc15e39ae5c4cda5fde780f">get_queue</a>()</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#ab23aa4155950ebb8db086096b15b1850">current_context</a>().<a class="code" href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">get_queue</a>();</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="l00095"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8"> 95</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">setup_context</a>(<span class="keywordtype">long</span> i,</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  std::vector<cl_device_id> <span class="keyword">const</span> & devices)</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">if</span> (initialized_[i])</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  std::cerr << <span class="stringliteral">"ViennaCL: Warning in init_context(): Providing a list of devices has no effect, because context for ViennaCL is already created!"</span> << std::endl;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">//set devices for context:</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">for</span> (<a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> j = 0; j<devices.size(); ++j)</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  contexts_[i].add_device(devices[j]);</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#a187f96005fcfa0c395449c0ff2feda12"> 115</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a187f96005fcfa0c395449c0ff2feda12">setup_context</a>(<span class="keywordtype">long</span> i,</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  cl_context c,</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  std::vector<cl_device_id> <span class="keyword">const</span> & devices,</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  std::map< cl_device_id, std::vector< cl_command_queue > > <span class="keyword">const</span> & queues)</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  {</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  assert(devices.size() == queues.size() && bool(<span class="stringliteral">"ViennaCL expects one queue per device!"</span>));</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> (initialized_[i])</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  std::cerr << <span class="stringliteral">"ViennaCL: Warning in init_context(): Providing a list of devices has no effect, because context for ViennaCL is already created!"</span> << std::endl;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">//set devices for context:</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">for</span> (<a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> j = 0; j<devices.size(); ++j)</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  contexts_[i].add_device(devices[j]);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">//init context:</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  contexts_[i].init(c);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="comment">//add queues:</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> std::map< cl_device_id, std::vector< cl_command_queue > >::const_iterator queue_iterator;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">for</span> (queue_iterator qit = queues.begin();</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  qit != queues.end();</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  ++qit)</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  std::vector<cl_command_queue> <span class="keyword">const</span> & queues_for_device = qit->second;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">for</span> (<a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> j=0; j<queues_for_device.size(); ++j)</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  contexts_[i].add_queue(qit->first, queues_for_device[j]);</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  initialized_[i] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#af4b87179697ab633e57476c1718f2948"> 155</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#af4b87179697ab633e57476c1718f2948">setup_context</a>(<span class="keywordtype">long</span> i, cl_context c, std::vector<cl_device_id> <span class="keyword">const</span> & devices, std::vector<cl_command_queue> <span class="keyword">const</span> & queue)</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  {</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  assert(devices.size() == queue.size() && bool(<span class="stringliteral">"ViennaCL expects one queue per device!"</span>));</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">//wrap queue vector into map</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  std::map< cl_device_id, std::vector<cl_command_queue> > queues_map;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">for</span> (<a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> j = 0; j<devices.size(); ++j)</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  queues_map[devices[j]].push_back(queue[j]);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">setup_context</a>(i, c, devices, queues_map);</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#ad311081e0f049788e1378bd9156473a0"> 168</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#ad311081e0f049788e1378bd9156473a0">add_context</a>(<span class="keywordtype">long</span> i, <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a>& c)</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  {</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor">#if defined(VIENNACL_DEBUG_ALL) || defined(VIENNACL_DEBUG_CONTEXT)</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  std::cout << <span class="stringliteral">"ViennaCL: Adding context '"</span> << c.<a class="code" href="classviennacl_1_1ocl_1_1context.html#a611d95b11db04230f63e37bfeae911db">handle</a>() << <span class="stringliteral">"' as id "</span> << i << std::endl;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  std::cout << <span class="stringliteral">"ViennaCL: There are "</span> << c.<a class="code" href="classviennacl_1_1ocl_1_1context.html#ac8545f52ca32888b0100373f833d7e98">program_num</a>() << <span class="stringliteral">" programs"</span> << std::endl;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  contexts_[i] = c;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  initialized_[i] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  }</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a name="l00179"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#a7247bc242df93865606016201f5b2e08"> 179</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a7247bc242df93865606016201f5b2e08">set_context_device_type</a>(<span class="keywordtype">long</span> i, cl_device_type t)</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  contexts_[i].default_device_type(t);</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a name="l00185"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#a18fe6f00d23c81fcbfc1e4fe8155d34c"> 185</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a18fe6f00d23c81fcbfc1e4fe8155d34c">set_context_device_num</a>(<span class="keywordtype">long</span> i, <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> num)</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  contexts_[i].default_device_num(num);</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  }</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div>
<div class="line"><a name="l00191"></a><span class="lineno"><a class="line" href="classviennacl_1_1ocl_1_1backend.html#a49b3fce2b3aaada67d6438fb06803882"> 191</a></span>  <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a49b3fce2b3aaada67d6438fb06803882">set_context_platform_index</a>(<span class="keywordtype">long</span> i, <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> pf_index)</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  contexts_[i].platform_index(pf_index);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keyword">static</span> <span class="keywordtype">long</span> current_context_id_;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keyword">static</span> std::map<long, bool> initialized_;</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">static</span> std::map<long, viennacl::ocl::context> contexts_;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> };</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="keyword">template</span><<span class="keywordtype">bool</span> dummy></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="keywordtype">long</span> backend<dummy>::current_context_id_ = 0;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="keyword">template</span><<span class="keywordtype">bool</span> dummy></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> std::map<long, bool> backend<dummy>::initialized_;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">template</span><<span class="keywordtype">bool</span> dummy></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> std::map<long, viennacl::ocl::context> backend<dummy>::contexts_;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a name="l00213"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7"> 213</a></span> <span class="keyword">inline</span> <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & <a class="code" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">current_context</a>()</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> {</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">return</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#ab23aa4155950ebb8db086096b15b1850">viennacl::ocl::backend<>::current_context</a>();</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> }</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div>
<div class="line"><a name="l00219"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#acc1a7460a9ff237b7c0306c32c3d34c6"> 219</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#acc1a7460a9ff237b7c0306c32c3d34c6">switch_context</a>(<span class="keywordtype">long</span> i)</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> {</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a98751b295283a62225247a3822a7c9a4">viennacl::ocl::backend<>::switch_context</a>(i);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> }</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
<div class="line"><a name="l00225"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a82c1aba632a7ee0991eee480d5340966"> 225</a></span> <span class="keyword">inline</span> <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & <a class="code" href="namespaceviennacl_1_1ocl.html#a82c1aba632a7ee0991eee480d5340966">get_context</a>(<span class="keywordtype">long</span> i)</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> {</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">return</span> <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a2624fd8cbca3bd89ca5211947d7f04b6">viennacl::ocl::backend<>::context</a>(i);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> }</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
<div class="line"><a name="l00231"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#add1725d48cfd159ce187e287369d1cdb"> 231</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#add1725d48cfd159ce187e287369d1cdb">setup_context</a>(<span class="keywordtype">long</span> i,</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  std::vector<cl_device_id> <span class="keyword">const</span> & devices)</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> {</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">viennacl::ocl::backend<>::setup_context</a>(i, devices);</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> }</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div>
<div class="line"><a name="l00238"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a82b136323ba25f51eeac6c8afd95d897"> 238</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#add1725d48cfd159ce187e287369d1cdb">setup_context</a>(<span class="keywordtype">long</span> i,</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <a class="code" href="classviennacl_1_1ocl_1_1device.html">viennacl::ocl::device</a> <span class="keyword">const</span> & <a class="code" href="classviennacl_1_1ocl_1_1device.html">device</a>)</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> {</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  std::vector<cl_device_id> device_id_array(1);</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  device_id_array[0] = device.<a class="code" href="classviennacl_1_1ocl_1_1device.html#a6d696f181b320d07bfc4a28189127476">id</a>();</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">viennacl::ocl::backend<>::setup_context</a>(i, device_id_array);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> }</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
<div class="line"><a name="l00247"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a643e413cdc3e3d682c8ae0c6f0a83e0a"> 247</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#add1725d48cfd159ce187e287369d1cdb">setup_context</a>(<span class="keywordtype">long</span> i,</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  cl_context c,</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  std::vector<cl_device_id> <span class="keyword">const</span> & devices,</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  std::map< cl_device_id, std::vector<cl_command_queue> > <span class="keyword">const</span> & queues)</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> {</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">viennacl::ocl::backend<>::setup_context</a>(i, c, devices, queues);</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> }</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> </div>
<div class="line"><a name="l00256"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#aae5ebc6a53d1c2ac134b5d955c61ad9e"> 256</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#add1725d48cfd159ce187e287369d1cdb">setup_context</a>(<span class="keywordtype">long</span> i, cl_context c, std::vector<cl_device_id> <span class="keyword">const</span> & devices, std::vector<cl_command_queue> <span class="keyword">const</span> & queues)</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> {</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">viennacl::ocl::backend<>::setup_context</a>(i, c, devices, queues);</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> }</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div>
<div class="line"><a name="l00262"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a4ee09e7150e7158ac0e2fbfe21740138"> 262</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#add1725d48cfd159ce187e287369d1cdb">setup_context</a>(<span class="keywordtype">long</span> i, cl_context c, cl_device_id d, cl_command_queue q)</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> {</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  std::vector<cl_device_id> devices(1);</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  std::vector<cl_command_queue> queues(1);</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  devices[0] = d;</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  queues[0] = q;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">viennacl::ocl::backend<>::setup_context</a>(i, c, devices, queues);</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> }</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd"> 272</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(<span class="keywordtype">long</span> i, cl_device_type dev_type)</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> {</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a7247bc242df93865606016201f5b2e08">viennacl::ocl::backend<>::set_context_device_type</a>(i, dev_type);</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> }</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div>
<div class="line"><a name="l00278"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a0bda50e7a1d1ce32d0eb999bcf40ff65"> 278</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(<span class="keywordtype">long</span> i, <a class="code" href="structviennacl_1_1ocl_1_1gpu__tag.html">viennacl::ocl::gpu_tag</a>)</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> {</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(i, CL_DEVICE_TYPE_GPU);</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> }</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div>
<div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#aae6d53d33250af634366a082eb389e1e"> 284</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(<span class="keywordtype">long</span> i, <a class="code" href="structviennacl_1_1ocl_1_1cpu__tag.html">viennacl::ocl::cpu_tag</a>)</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> {</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(i, CL_DEVICE_TYPE_CPU);</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> }</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div>
<div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#aa55ca72f1d88e6366d9d7555d5fd3e3c"> 290</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(<span class="keywordtype">long</span> i, <a class="code" href="structviennacl_1_1ocl_1_1default__tag.html">viennacl::ocl::default_tag</a>)</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> {</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(i, CL_DEVICE_TYPE_DEFAULT);</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> }</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> </div>
<div class="line"><a name="l00296"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a8eb7b871db32c1425afe547854885e83"> 296</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(<span class="keywordtype">long</span> i, <a class="code" href="structviennacl_1_1ocl_1_1accelerator__tag.html">viennacl::ocl::accelerator_tag</a>)</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> {</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <a class="code" href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">set_context_device_type</a>(i, CL_DEVICE_TYPE_ACCELERATOR);</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> }</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> </div>
<div class="line"><a name="l00302"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a2c46e1ed1f9449c4677af35ca173b106"> 302</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a2c46e1ed1f9449c4677af35ca173b106">set_context_device_num</a>(<span class="keywordtype">long</span> i, <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> num)</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> {</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a18fe6f00d23c81fcbfc1e4fe8155d34c">viennacl::ocl::backend<>::set_context_device_num</a>(i, num);</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> }</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div>
<div class="line"><a name="l00313"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#aba4b534b1464fc21143f0c6aaae89a40"> 313</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#aba4b534b1464fc21143f0c6aaae89a40">set_context_platform_index</a>(<span class="keywordtype">long</span> i, <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> pf_index)</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> {</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <a class="code" href="classviennacl_1_1ocl_1_1backend.html#a49b3fce2b3aaada67d6438fb06803882">viennacl::ocl::backend<>::set_context_platform_index</a>(i, pf_index);</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> }</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> </div>
<div class="line"><a name="l00320"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#ac7871671987d322a8766aea79b1cd17a"> 320</a></span> <span class="keyword">inline</span> <a class="code" href="classviennacl_1_1ocl_1_1command__queue.html">viennacl::ocl::command_queue</a> & <a class="code" href="namespaceviennacl_1_1ocl.html#ac7871671987d322a8766aea79b1cd17a">get_queue</a>()</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> {</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">viennacl::ocl::current_context</a>().<a class="code" href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">get_queue</a>();</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> }</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div>
<div class="line"><a name="l00326"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a053c7351f8606ff49117e251683a77b4"> 326</a></span> <span class="keyword">inline</span> <a class="code" href="classviennacl_1_1ocl_1_1command__queue.html">viennacl::ocl::command_queue</a> & <a class="code" href="namespaceviennacl_1_1ocl.html#ac7871671987d322a8766aea79b1cd17a">get_queue</a>(<a class="code" href="classviennacl_1_1ocl_1_1device.html">viennacl::ocl::device</a> d, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> queue_id = 0)</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> {</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">viennacl::ocl::current_context</a>().<a class="code" href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">get_queue</a>(d.<a class="code" href="classviennacl_1_1ocl_1_1device.html#a6d696f181b320d07bfc4a28189127476">id</a>(), queue_id);</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> }</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> </div>
<div class="line"><a name="l00332"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#aaa732391e632ec192953cc997fa269df"> 332</a></span> <span class="keyword">inline</span> <a class="code" href="classviennacl_1_1ocl_1_1command__queue.html">viennacl::ocl::command_queue</a> & <a class="code" href="namespaceviennacl_1_1ocl.html#ac7871671987d322a8766aea79b1cd17a">get_queue</a>(cl_device_id dev_id, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> queue_id = 0)</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> {</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">viennacl::ocl::current_context</a>().<a class="code" href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">get_queue</a>(dev_id, queue_id);</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> }</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> </div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div>
<div class="line"><a name="l00339"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#a61a73653d92f1eb2ef9c649ec253e29f"> 339</a></span> <span class="keyword">inline</span> <a class="code" href="classviennacl_1_1ocl_1_1kernel.html">viennacl::ocl::kernel</a> & <a class="code" href="namespaceviennacl_1_1ocl.html#a61a73653d92f1eb2ef9c649ec253e29f">get_kernel</a>(std::string <span class="keyword">const</span> & prog_name, std::string <span class="keyword">const</span> & kernel_name)</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> {</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">viennacl::ocl::current_context</a>().<a class="code" href="classviennacl_1_1ocl_1_1context.html#a1b1339c711fd666c8bdc9104f47670d4">get_program</a>(prog_name).<a class="code" href="classviennacl_1_1ocl_1_1program.html#a117eef2c7894ab1d794bc115d2a23f4a">get_kernel</a>(kernel_name);</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> }</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> </div>
<div class="line"><a name="l00345"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#ac8bcead4c47a372eef33d7d660fa0072"> 345</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1ocl.html#ac8bcead4c47a372eef33d7d660fa0072">switch_device</a>(<a class="code" href="classviennacl_1_1ocl_1_1device.html">viennacl::ocl::device</a> & d)</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> {</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <a class="code" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">viennacl::ocl::current_context</a>().<a class="code" href="classviennacl_1_1ocl_1_1context.html#a85373fa81be824eef324579bf429d201">switch_device</a>(d);</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> }</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> </div>
<div class="line"><a name="l00351"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1ocl.html#ac54d59a74deaccec81f64e738b856348"> 351</a></span> <span class="keyword">inline</span> <a class="code" href="classviennacl_1_1ocl_1_1device.html">viennacl::ocl::device</a> <span class="keyword">const</span> & <a class="code" href="namespaceviennacl_1_1ocl.html#ac54d59a74deaccec81f64e738b856348">current_device</a>()</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> {</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">viennacl::ocl::current_context</a>().<a class="code" href="classviennacl_1_1ocl_1_1context.html#ab4d9064422cc8c183a14ad77c2a7b49b">current_device</a>();</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> }</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> } <span class="comment">//ocl</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> } <span class="comment">//viennacl</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1gpu__tag_html"><div class="ttname"><a href="structviennacl_1_1ocl_1_1gpu__tag.html">viennacl::ocl::gpu_tag</a></div><div class="ttdoc">A tag identifying OpenCL devices as GPUs. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2forwards_8h_source.html#l00035">forwards.h:35</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_ab4d9064422cc8c183a14ad77c2a7b49b"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#ab4d9064422cc8c183a14ad77c2a7b49b">viennacl::ocl::context::current_device</a></div><div class="ttdeci">viennacl::ocl::device const & current_device() const </div><div class="ttdoc">Returns the current device. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00112">context.hpp:112</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1device_html_a6d696f181b320d07bfc4a28189127476"><div class="ttname"><a href="classviennacl_1_1ocl_1_1device.html#a6d696f181b320d07bfc4a28189127476">viennacl::ocl::device::id</a></div><div class="ttdeci">cl_device_id id() const </div><div class="ttdoc">Returns the OpenCL device id. </div><div class="ttdef"><b>Definition:</b> <a href="device_8hpp_source.html#l00981">device.hpp:981</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_a61a73653d92f1eb2ef9c649ec253e29f"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#a61a73653d92f1eb2ef9c649ec253e29f">viennacl::ocl::get_kernel</a></div><div class="ttdeci">viennacl::ocl::kernel & get_kernel(std::string const &prog_name, std::string const &kernel_name)</div><div class="ttdoc">Convenience function for getting the kernel for a particular program from the current active context...</div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00339">backend.hpp:339</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_af4b87179697ab633e57476c1718f2948"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#af4b87179697ab633e57476c1718f2948">viennacl::ocl::backend::setup_context</a></div><div class="ttdeci">static void setup_context(long i, cl_context c, std::vector< cl_device_id > const &devices, std::vector< cl_command_queue > const &queue)</div><div class="ttdoc">Initializes ViennaCL with an already existing context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00155">backend.hpp:155</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_a85373fa81be824eef324579bf429d201"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#a85373fa81be824eef324579bf429d201">viennacl::ocl::context::switch_device</a></div><div class="ttdeci">void switch_device(vcl_size_t i)</div><div class="ttdoc">Switches the current device to the i-th device in this context. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00119">context.hpp:119</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_ab23aa4155950ebb8db086096b15b1850"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#ab23aa4155950ebb8db086096b15b1850">viennacl::ocl::backend::current_context</a></div><div class="ttdeci">static viennacl::ocl::context & current_context()</div><div class="ttdoc">Returns the current active context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00073">backend.hpp:73</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_af4f7f70a51d069f7796bd9b4bb2a852a"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">viennacl::ocl::context::get_queue</a></div><div class="ttdeci">viennacl::ocl::command_queue & get_queue()</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00266">context.hpp:266</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1kernel_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1kernel.html">viennacl::ocl::kernel</a></div><div class="ttdoc">Represents an OpenCL kernel within ViennaCL. </div><div class="ttdef"><b>Definition:</b> <a href="kernel_8hpp_source.html#l00058">kernel.hpp:58</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_a1b1339c711fd666c8bdc9104f47670d4"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#a1b1339c711fd666c8bdc9104f47670d4">viennacl::ocl::context::get_program</a></div><div class="ttdeci">viennacl::ocl::program & get_program(std::string const &name)</div><div class="ttdoc">Returns the program with the provided name. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00532">context.hpp:532</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_a18fe6f00d23c81fcbfc1e4fe8155d34c"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#a18fe6f00d23c81fcbfc1e4fe8155d34c">viennacl::ocl::backend::set_context_device_num</a></div><div class="ttdeci">static void set_context_device_num(long i, vcl_size_t num)</div><div class="ttdoc">Sets the maximum number of devices per context. Ignored if a device array is provided as well...</div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00185">backend.hpp:185</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_a16fc917445ce2010e7b16fbc968771b7"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#a16fc917445ce2010e7b16fbc968771b7">viennacl::ocl::current_context</a></div><div class="ttdeci">viennacl::ocl::context & current_context()</div><div class="ttdoc">Convenience function for returning the current context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00213">backend.hpp:213</a></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="structviennacl_1_1ocl_1_1cpu__tag_html"><div class="ttname"><a href="structviennacl_1_1ocl_1_1cpu__tag.html">viennacl::ocl::cpu_tag</a></div><div class="ttdoc">A tag identifying OpenCL devices as CPUs. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2forwards_8h_source.html#l00037">forwards.h:37</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1device_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1device.html">viennacl::ocl::device</a></div><div class="ttdoc">A class representing a compute device (e.g. a GPU) </div><div class="ttdef"><b>Definition:</b> <a href="device_8hpp_source.html#l00049">device.hpp:49</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_a98751b295283a62225247a3822a7c9a4"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#a98751b295283a62225247a3822a7c9a4">viennacl::ocl::backend::switch_context</a></div><div class="ttdeci">static void switch_context(long i)</div><div class="ttdoc">Switches the current context to the context identified by i. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00043">backend.hpp:43</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1command__queue_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1command__queue.html">viennacl::ocl::command_queue</a></div><div class="ttdoc">A class representing a command queue. </div><div class="ttdef"><b>Definition:</b> <a href="command__queue_8hpp_source.html#l00045">command_queue.hpp:45</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_ac54d59a74deaccec81f64e738b856348"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#ac54d59a74deaccec81f64e738b856348">viennacl::ocl::current_device</a></div><div class="ttdeci">viennacl::ocl::device const & current_device()</div><div class="ttdoc">Convenience function for returning the active device in the current context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00351">backend.hpp:351</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_ac8545f52ca32888b0100373f833d7e98"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#ac8545f52ca32888b0100373f833d7e98">viennacl::ocl::context::program_num</a></div><div class="ttdeci">vcl_size_t program_num()</div><div class="ttdoc">Returns the number of programs within this context. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00602">context.hpp:602</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_a49b3fce2b3aaada67d6438fb06803882"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#a49b3fce2b3aaada67d6438fb06803882">viennacl::ocl::backend::set_context_platform_index</a></div><div class="ttdeci">static void set_context_platform_index(long i, vcl_size_t pf_index)</div><div class="ttdoc">Sets the context device type. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00191">backend.hpp:191</a></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="classviennacl_1_1ocl_1_1backend_html_ad311081e0f049788e1378bd9156473a0"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#ad311081e0f049788e1378bd9156473a0">viennacl::ocl::backend::add_context</a></div><div class="ttdeci">static void add_context(long i, viennacl::ocl::context &c)</div><div class="ttdoc">Add an existing context object to the backend. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00168">backend.hpp:168</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_ac8bcead4c47a372eef33d7d660fa0072"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#ac8bcead4c47a372eef33d7d660fa0072">viennacl::ocl::switch_device</a></div><div class="ttdeci">void switch_device(viennacl::ocl::device &d)</div><div class="ttdoc">Convenience function for switching the active device in the current context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00345">backend.hpp:345</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_a72be591af6070e556d52e964935bb0f8"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#a72be591af6070e556d52e964935bb0f8">viennacl::ocl::backend::setup_context</a></div><div class="ttdeci">static void setup_context(long i, std::vector< cl_device_id > const &devices)</div><div class="ttdoc">Sets a number of devices for the context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00095">backend.hpp:95</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_ac7871671987d322a8766aea79b1cd17a"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#ac7871671987d322a8766aea79b1cd17a">viennacl::ocl::get_queue</a></div><div class="ttdeci">viennacl::ocl::command_queue & get_queue()</div><div class="ttdoc">Convenience function for getting the default queue for the currently active device in the active cont...</div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00320">backend.hpp:320</a></div></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1accelerator__tag_html"><div class="ttname"><a href="structviennacl_1_1ocl_1_1accelerator__tag.html">viennacl::ocl::accelerator_tag</a></div><div class="ttdoc">A tag identifying OpenCL devices as accelerators (e.g. Intel Xeon Phi) </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2forwards_8h_source.html#l00039">forwards.h:39</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html">viennacl::ocl::backend</a></div><div class="ttdoc">A backend that provides contexts for ViennaCL objects (vector, matrix, etc.) </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00036">backend.hpp:36</a></div></div>
<div class="ttc" id="namespaceviennacl_html_a98a0afcc513111ffa0bd138f891930df"><div class="ttname"><a href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">viennacl::vcl_size_t</a></div><div class="ttdeci">std::size_t vcl_size_t</div><div class="ttdef"><b>Definition:</b> <a href="forwards_8h_source.html#l00075">forwards.h:75</a></div></div>
<div class="ttc" id="ocl_2context_8hpp_html"><div class="ttname"><a href="ocl_2context_8hpp.html">context.hpp</a></div><div class="ttdoc">Represents an OpenCL context within ViennaCL. </div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_a187f96005fcfa0c395449c0ff2feda12"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#a187f96005fcfa0c395449c0ff2feda12">viennacl::ocl::backend::setup_context</a></div><div class="ttdeci">static void setup_context(long i, cl_context c, std::vector< cl_device_id > const &devices, std::map< cl_device_id, std::vector< cl_command_queue > > const &queues)</div><div class="ttdoc">Initializes ViennaCL with an already existing context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00115">backend.hpp:115</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_a2624fd8cbca3bd89ca5211947d7f04b6"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#a2624fd8cbca3bd89ca5211947d7f04b6">viennacl::ocl::backend::context</a></div><div class="ttdeci">static viennacl::ocl::context & context(long id)</div><div class="ttdoc">Returns the current active context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00049">backend.hpp:49</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_acc1a7460a9ff237b7c0306c32c3d34c6"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#acc1a7460a9ff237b7c0306c32c3d34c6">viennacl::ocl::switch_context</a></div><div class="ttdeci">void switch_context(long i)</div><div class="ttdoc">Convenience function for switching the current context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00219">backend.hpp:219</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_ac7b0811b5dc15e39ae5c4cda5fde780f"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#ac7b0811b5dc15e39ae5c4cda5fde780f">viennacl::ocl::backend::get_queue</a></div><div class="ttdeci">static viennacl::ocl::command_queue & get_queue()</div><div class="ttdoc">Returns the current queue for the active device in the active context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00085">backend.hpp:85</a></div></div>
<div class="ttc" id="enqueue_8hpp_html"><div class="ttname"><a href="enqueue_8hpp.html">enqueue.hpp</a></div><div class="ttdoc">Enqueues kernels into command queues. </div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1program_html_a117eef2c7894ab1d794bc115d2a23f4a"><div class="ttname"><a href="classviennacl_1_1ocl_1_1program.html#a117eef2c7894ab1d794bc115d2a23f4a">viennacl::ocl::program::get_kernel</a></div><div class="ttdeci">viennacl::ocl::kernel & get_kernel(std::string const &name)</div><div class="ttdoc">Returns the kernel with the provided name. </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00773">context.hpp:773</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_aba4b534b1464fc21143f0c6aaae89a40"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#aba4b534b1464fc21143f0c6aaae89a40">viennacl::ocl::set_context_platform_index</a></div><div class="ttdeci">void set_context_platform_index(long i, vcl_size_t pf_index)</div><div class="ttdoc">Convenience function for setting the platform index. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00313">backend.hpp:313</a></div></div>
<div class="ttc" id="structviennacl_1_1ocl_1_1default__tag_html"><div class="ttname"><a href="structviennacl_1_1ocl_1_1default__tag.html">viennacl::ocl::default_tag</a></div><div class="ttdoc">A tag denoting the default OpenCL device type (SDK-specific) </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2forwards_8h_source.html#l00041">forwards.h:41</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1backend_html_a7247bc242df93865606016201f5b2e08"><div class="ttname"><a href="classviennacl_1_1ocl_1_1backend.html#a7247bc242df93865606016201f5b2e08">viennacl::ocl::backend::set_context_device_type</a></div><div class="ttdeci">static void set_context_device_type(long i, cl_device_type t)</div><div class="ttdoc">Sets the context device type. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00179">backend.hpp:179</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_a82c1aba632a7ee0991eee480d5340966"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#a82c1aba632a7ee0991eee480d5340966">viennacl::ocl::get_context</a></div><div class="ttdeci">viennacl::ocl::context & get_context(long i)</div><div class="ttdoc">Convenience function for returning the current context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00225">backend.hpp:225</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_a11349d9bbd1691595c6ac23d03b294fd"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#a11349d9bbd1691595c6ac23d03b294fd">viennacl::ocl::set_context_device_type</a></div><div class="ttdeci">void set_context_device_type(long i, cl_device_type dev_type)</div><div class="ttdoc">Convenience function for setting the default device type for a context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00272">backend.hpp:272</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_add1725d48cfd159ce187e287369d1cdb"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#add1725d48cfd159ce187e287369d1cdb">viennacl::ocl::setup_context</a></div><div class="ttdeci">void setup_context(long i, std::vector< cl_device_id > const &devices)</div><div class="ttdoc">Convenience function for setting devices for a context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00231">backend.hpp:231</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1ocl_html_a2c46e1ed1f9449c4677af35ca173b106"><div class="ttname"><a href="namespaceviennacl_1_1ocl.html#a2c46e1ed1f9449c4677af35ca173b106">viennacl::ocl::set_context_device_num</a></div><div class="ttdeci">void set_context_device_num(long i, vcl_size_t num)</div><div class="ttdoc">Convenience function for setting the number of default devices per context. </div><div class="ttdef"><b>Definition:</b> <a href="backend_8hpp_source.html#l00302">backend.hpp:302</a></div></div>
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