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<div class="title">opencl.hpp</div> </div>
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<a href="opencl_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_BACKEND_OPENCL_HPP_</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define VIENNACL_BACKEND_OPENCL_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="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="ocl_2handle_8hpp.html">viennacl/ocl/handle.hpp</a>"</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="backend_8hpp.html">viennacl/ocl/backend.hpp</a>"</span></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>viennacl</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>backend</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1backend_1_1opencl.html"> 34</a></span> <span class="keyword">namespace </span>opencl</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="comment">// Requirements for backend:</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="comment">// * memory_create(size, host_ptr)</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// * memory_copy(src, dest, offset_src, offset_dest, size)</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// * memory_write_from_main_memory(src, offset, size,</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// dest, offset, size)</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// * memory_read_to_main_memory(src, offset, size</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// dest, offset, size)</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// *</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">//</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1backend_1_1opencl.html#a726ec869b2a56a08da262111f3b70b41"> 55</a></span> <span class="keyword">inline</span> cl_mem <a class="code" href="namespaceviennacl_1_1backend_1_1opencl.html#a726ec869b2a56a08da262111f3b70b41">memory_create</a>(<a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> <span class="keyword">const</span> & ctx, <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> size_in_bytes, <span class="keyword">const</span> <span class="keywordtype">void</span> * host_ptr = NULL)</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>  <span class="comment">//std::cout << "Creating buffer (" << size_in_bytes << " bytes) host buffer " << host_ptr << " in context " << &ctx << std::endl;</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">return</span> ctx.<a class="code" href="classviennacl_1_1ocl_1_1context.html#ad14902e6145fc89fa77dc412c46eb58f">create_memory_without_smart_handle</a>(CL_MEM_READ_WRITE, static_cast<unsigned int>(size_in_bytes), const_cast<void *>(host_ptr));</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1backend_1_1opencl.html#a347eef11410dffb4b31b28657538290e"> 69</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1backend_1_1opencl.html#a347eef11410dffb4b31b28657538290e">memory_copy</a>(<a class="code" href="classviennacl_1_1ocl_1_1handle.html">viennacl::ocl::handle<cl_mem></a> <span class="keyword">const</span> & src_buffer,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="classviennacl_1_1ocl_1_1handle.html">viennacl::ocl::handle<cl_mem></a> & dst_buffer,</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> src_offset,</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> dst_offset,</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> bytes_to_copy)</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>  assert( &src_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#aabb9d0a4beed00a52500de6047651135">context</a>() == &dst_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#aabb9d0a4beed00a52500de6047651135">context</a>() && bool(<span class="stringliteral">"Transfer between memory buffers in different contexts not supported yet!"</span>));</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>  <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & memory_context = <span class="keyword">const_cast<</span><a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> &<span class="keyword">></span>(src_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#aabb9d0a4beed00a52500de6047651135">context</a>());</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  cl_int err = clEnqueueCopyBuffer(memory_context.get_queue().handle().get(),</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  src_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>(),</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  dst_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>(),</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  src_offset,</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  dst_offset,</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  bytes_to_copy,</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  0, NULL, NULL); <span class="comment">//events</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="error_8hpp.html#a44f070f54255e72eb40c75ebd72ea602">VIENNACL_ERR_CHECK</a>(err);</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> </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1backend_1_1opencl.html#a54957655bb85f822921cc7cf6bd9f222"> 97</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1backend_1_1opencl.html#a54957655bb85f822921cc7cf6bd9f222">memory_write</a>(<a class="code" href="classviennacl_1_1ocl_1_1handle.html">viennacl::ocl::handle<cl_mem></a> & dst_buffer,</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> dst_offset,</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> bytes_to_copy,</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">const</span> <span class="keywordtype">void</span> * ptr,</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">bool</span> async = <span class="keyword">false</span>)</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & memory_context = <span class="keyword">const_cast<</span><a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> &<span class="keyword">></span>(dst_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#aabb9d0a4beed00a52500de6047651135">context</a>());</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> <span class="preprocessor">#if defined(VIENNACL_DEBUG_ALL) || defined(VIENNACL_DEBUG_DEVICE)</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  std::cout << <span class="stringliteral">"Writing data ("</span> << bytes_to_copy << <span class="stringliteral">" bytes, offset "</span> << dst_offset << <span class="stringliteral">") to OpenCL buffer "</span> << dst_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>() << <span class="stringliteral">" with queue "</span> << memory_context.<a class="code" href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">get_queue</a>().<a class="code" href="classviennacl_1_1ocl_1_1command__queue.html#a670f2d080528e50d64d3912567708754">handle</a>().<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>() << <span class="stringliteral">" from "</span> << ptr << std::endl;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  cl_int err = clEnqueueWriteBuffer(memory_context.<a class="code" href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">get_queue</a>().<a class="code" href="classviennacl_1_1ocl_1_1command__queue.html#a670f2d080528e50d64d3912567708754">handle</a>().<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>(),</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  dst_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>(),</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  async ? CL_FALSE : CL_TRUE, <span class="comment">//blocking</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  dst_offset,</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  bytes_to_copy,</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  ptr,</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  0, NULL, NULL); <span class="comment">//events</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <a class="code" href="error_8hpp.html#a44f070f54255e72eb40c75ebd72ea602">VIENNACL_ERR_CHECK</a>(err);</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> }</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> </div>
<div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="namespaceviennacl_1_1backend_1_1opencl.html#af5b9966832bc253b34c2cfa3f8b97bc8"> 129</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespaceviennacl_1_1backend_1_1opencl.html#af5b9966832bc253b34c2cfa3f8b97bc8">memory_read</a>(<a class="code" href="classviennacl_1_1ocl_1_1handle.html">viennacl::ocl::handle<cl_mem></a> <span class="keyword">const</span> & src_buffer,</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> src_offset,</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="namespaceviennacl.html#a98a0afcc513111ffa0bd138f891930df">vcl_size_t</a> bytes_to_copy,</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">void</span> * ptr,</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordtype">bool</span> async = <span class="keyword">false</span>)</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="comment">//std::cout << "Reading data (" << bytes_to_copy << " bytes, offset " << src_offset << ") from OpenCL buffer " << src_buffer.get() << " to " << ptr << std::endl;</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> & memory_context = <span class="keyword">const_cast<</span><a class="code" href="classviennacl_1_1ocl_1_1context.html">viennacl::ocl::context</a> &<span class="keyword">></span>(src_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#aabb9d0a4beed00a52500de6047651135">context</a>());</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  cl_int err = clEnqueueReadBuffer(memory_context.<a class="code" href="classviennacl_1_1ocl_1_1context.html#af4f7f70a51d069f7796bd9b4bb2a852a">get_queue</a>().<a class="code" href="classviennacl_1_1ocl_1_1command__queue.html#a670f2d080528e50d64d3912567708754">handle</a>().<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>(),</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  src_buffer.<a class="code" href="classviennacl_1_1ocl_1_1handle.html#a5074caaee700015fc2d3b03540b01673">get</a>(),</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  async ? CL_FALSE : CL_TRUE, <span class="comment">//blocking</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  src_offset,</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  bytes_to_copy,</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  ptr,</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  0, NULL, NULL); <span class="comment">//events</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="error_8hpp.html#a44f070f54255e72eb40c75ebd72ea602">VIENNACL_ERR_CHECK</a>(err);</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="l00148"></a><span class="lineno"> 148</span> }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> } <span class="comment">//backend</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> } <span class="comment">//viennacl</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="namespaceviennacl_1_1backend_1_1opencl_html_a726ec869b2a56a08da262111f3b70b41"><div class="ttname"><a href="namespaceviennacl_1_1backend_1_1opencl.html#a726ec869b2a56a08da262111f3b70b41">viennacl::backend::opencl::memory_create</a></div><div class="ttdeci">cl_mem memory_create(viennacl::ocl::context const &ctx, vcl_size_t size_in_bytes, const void *host_ptr=NULL)</div><div class="ttdoc">Creates an array of the specified size in the current OpenCL context. If the second argument is provi...</div><div class="ttdef"><b>Definition:</b> <a href="opencl_8hpp_source.html#l00055">opencl.hpp:55</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1context_html_ad14902e6145fc89fa77dc412c46eb58f"><div class="ttname"><a href="classviennacl_1_1ocl_1_1context.html#ad14902e6145fc89fa77dc412c46eb58f">viennacl::ocl::context::create_memory_without_smart_handle</a></div><div class="ttdeci">cl_mem create_memory_without_smart_handle(cl_mem_flags flags, unsigned int size, void *ptr=NULL) const </div><div class="ttdoc">Creates a memory buffer within the context. Does not wrap the OpenCL handle into the smart-pointer-li...</div><div class="ttdef"><b>Definition:</b> <a href="ocl_2context_8hpp_source.html#l00196">context.hpp:196</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_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="namespaceviennacl_1_1backend_1_1opencl_html_a54957655bb85f822921cc7cf6bd9f222"><div class="ttname"><a href="namespaceviennacl_1_1backend_1_1opencl.html#a54957655bb85f822921cc7cf6bd9f222">viennacl::backend::opencl::memory_write</a></div><div class="ttdeci">void memory_write(viennacl::ocl::handle< cl_mem > &dst_buffer, vcl_size_t dst_offset, vcl_size_t bytes_to_copy, const void *ptr, bool async=false)</div><div class="ttdoc">Writes data from main RAM identified by 'ptr' to the OpenCL buffer identified by 'dst_buffer'. </div><div class="ttdef"><b>Definition:</b> <a href="opencl_8hpp_source.html#l00097">opencl.hpp:97</a></div></div>
<div class="ttc" id="namespaceviennacl_1_1backend_1_1opencl_html_af5b9966832bc253b34c2cfa3f8b97bc8"><div class="ttname"><a href="namespaceviennacl_1_1backend_1_1opencl.html#af5b9966832bc253b34c2cfa3f8b97bc8">viennacl::backend::opencl::memory_read</a></div><div class="ttdeci">void memory_read(viennacl::ocl::handle< cl_mem > const &src_buffer, vcl_size_t src_offset, vcl_size_t bytes_to_copy, void *ptr, bool async=false)</div><div class="ttdoc">Reads data from an OpenCL buffer back to main RAM. </div><div class="ttdef"><b>Definition:</b> <a href="opencl_8hpp_source.html#l00129">opencl.hpp:129</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1handle_html_aabb9d0a4beed00a52500de6047651135"><div class="ttname"><a href="classviennacl_1_1ocl_1_1handle.html#aabb9d0a4beed00a52500de6047651135">viennacl::ocl::handle::context</a></div><div class="ttdeci">viennacl::ocl::context const & context() const </div><div class="ttdef"><b>Definition:</b> <a href="ocl_2handle_8hpp_source.html#l00193">handle.hpp:193</a></div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1command__queue_html_a670f2d080528e50d64d3912567708754"><div class="ttname"><a href="classviennacl_1_1ocl_1_1command__queue.html#a670f2d080528e50d64d3912567708754">viennacl::ocl::command_queue::handle</a></div><div class="ttdeci">viennacl::ocl::handle< cl_command_queue > const & handle() const </div><div class="ttdef"><b>Definition:</b> <a href="command__queue_8hpp_source.html#l00081">command_queue.hpp:81</a></div></div>
<div class="ttc" id="error_8hpp_html_a44f070f54255e72eb40c75ebd72ea602"><div class="ttname"><a href="error_8hpp.html#a44f070f54255e72eb40c75ebd72ea602">VIENNACL_ERR_CHECK</a></div><div class="ttdeci">#define VIENNACL_ERR_CHECK(err)</div><div class="ttdef"><b>Definition:</b> <a href="error_8hpp_source.html#l00681">error.hpp:681</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="namespaceviennacl_1_1backend_1_1opencl_html_a347eef11410dffb4b31b28657538290e"><div class="ttname"><a href="namespaceviennacl_1_1backend_1_1opencl.html#a347eef11410dffb4b31b28657538290e">viennacl::backend::opencl::memory_copy</a></div><div class="ttdeci">void memory_copy(viennacl::ocl::handle< cl_mem > const &src_buffer, viennacl::ocl::handle< cl_mem > &dst_buffer, vcl_size_t src_offset, vcl_size_t dst_offset, vcl_size_t bytes_to_copy)</div><div class="ttdoc">Copies 'bytes_to_copy' bytes from address 'src_buffer + src_offset' in the OpenCL context to memory s...</div><div class="ttdef"><b>Definition:</b> <a href="opencl_8hpp_source.html#l00069">opencl.hpp:69</a></div></div>
<div class="ttc" id="ocl_2handle_8hpp_html"><div class="ttname"><a href="ocl_2handle_8hpp.html">handle.hpp</a></div><div class="ttdoc">Implementation of a smart-pointer-like class for handling OpenCL handles. </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="backend_8hpp_html"><div class="ttname"><a href="backend_8hpp.html">backend.hpp</a></div><div class="ttdoc">Implementations of the OpenCL backend, where all contexts are stored in. </div></div>
<div class="ttc" id="classviennacl_1_1ocl_1_1handle_html"><div class="ttname"><a href="classviennacl_1_1ocl_1_1handle.html">viennacl::ocl::handle< cl_mem ></a></div></div>
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