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 117   <div class="summary">
 118 <a href="#pub-methods">Public Member Functions</a>  </div>
 119   <div class="headertitle">
 120 <div class="title">CLGEMMLowp Class Reference</div>  </div>
 121 </div><!--header-->
 122 <div class="contents">
 123
 124 <p>Basic function to execute GEMMLowp on OpenCL.
 125  <a href="classarm__compute_1_1_c_l_g_e_m_m_lowp.xhtml#details">More...</a></p>
 126
 127 <p><code>#include &lt;<a class="el" href="_c_l_g_e_m_m_lowp_8h_source.xhtml">CLGEMMLowp.h</a>&gt;</code></p>
 128 <div class="dynheader">
 129 Collaboration diagram for CLGEMMLowp:</div>
 130 <div class="dyncontent">
 131 <div class="center"><iframe scrolling="no" frameborder="0" src="classarm__compute_1_1_c_l_g_e_m_m_lowp__coll__graph.svg" width="122" height="112"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
 132 </div>
 133 <center><span class="legend">[<a target="top" href="graph_legend.xhtml">legend</a>]</span></center></div>
 134 <table class="memberdecls">
 135 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
 136 Public Member Functions</h2></td></tr>
 137 <tr class="memitem:aac051c3731008575fe02d576e0bbca11"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_c_l_g_e_m_m_lowp.xhtml#aac051c3731008575fe02d576e0bbca11">CLGEMMLowp</a> ()</td></tr>
 138 <tr class="memdesc:aac051c3731008575fe02d576e0bbca11"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor.  <a href="#aac051c3731008575fe02d576e0bbca11">More...</a><br /></td></tr>
 139 <tr class="separator:aac051c3731008575fe02d576e0bbca11"><td class="memSeparator" colspan="2">&#160;</td></tr>
 140 <tr class="memitem:a2300a95117613686ccf15b45f0f2ac79"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_c_l_g_e_m_m_lowp.xhtml#a2300a95117613686ccf15b45f0f2ac79">configure</a> (const <a class="el" href="classarm__compute_1_1_i_c_l_tensor.xhtml">ICLTensor</a> *a, const <a class="el" href="classarm__compute_1_1_i_c_l_tensor.xhtml">ICLTensor</a> *b, <a class="el" href="classarm__compute_1_1_i_c_l_tensor.xhtml">ICLTensor</a> *output, int32_t a_offset, int32_t b_offset, int32_t output_offset, int32_t output_mult_int, int32_t shift)</td></tr>
 141 <tr class="memdesc:a2300a95117613686ccf15b45f0f2ac79"><td class="mdescLeft">&#160;</td><td class="mdescRight">Initialise the kernel's inputs, output.  <a href="#a2300a95117613686ccf15b45f0f2ac79">More...</a><br /></td></tr>
 142 <tr class="separator:a2300a95117613686ccf15b45f0f2ac79"><td class="memSeparator" colspan="2">&#160;</td></tr>
 143 <tr class="memitem:ad1717410afd0be936c6213a63c8005fb"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_c_l_g_e_m_m_lowp.xhtml#ad1717410afd0be936c6213a63c8005fb">run</a> () override</td></tr>
 144 <tr class="memdesc:ad1717410afd0be936c6213a63c8005fb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Run the kernels contained in the function.  <a href="#ad1717410afd0be936c6213a63c8005fb">More...</a><br /></td></tr>
 145 <tr class="separator:ad1717410afd0be936c6213a63c8005fb"><td class="memSeparator" colspan="2">&#160;</td></tr>
 146 <tr class="inherit_header pub_methods_classarm__compute_1_1_i_function"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classarm__compute_1_1_i_function')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classarm__compute_1_1_i_function.xhtml">IFunction</a></td></tr>
 147 <tr class="memitem:ab921ecc3f3f6ae2b4bd61f3e1998d8c4 inherit pub_methods_classarm__compute_1_1_i_function"><td class="memItemLeft" align="right" valign="top">virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classarm__compute_1_1_i_function.xhtml#ab921ecc3f3f6ae2b4bd61f3e1998d8c4">~IFunction</a> ()=default</td></tr>
 148 <tr class="memdesc:ab921ecc3f3f6ae2b4bd61f3e1998d8c4 inherit pub_methods_classarm__compute_1_1_i_function"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor.  <a href="#ab921ecc3f3f6ae2b4bd61f3e1998d8c4">More...</a><br /></td></tr>
 149 <tr class="separator:ab921ecc3f3f6ae2b4bd61f3e1998d8c4 inherit pub_methods_classarm__compute_1_1_i_function"><td class="memSeparator" colspan="2">&#160;</td></tr>
 150 </table>
 151 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 152 <div class="textblock"><p>Basic function to execute GEMMLowp on OpenCL. </p>
 153 <p>This function calls the following OpenCL kernels:</p>
 154 <ol type="1">
 155 <li><a class="el" href="classarm__compute_1_1_c_l_g_e_m_m_interleave4x4_kernel.xhtml">CLGEMMInterleave4x4Kernel</a></li>
 156 <li><a class="el" href="classarm__compute_1_1_c_l_g_e_m_m_transpose1x_w_kernel.xhtml">CLGEMMTranspose1xWKernel</a></li>
 157 <li><a class="el" href="classarm__compute_1_1_c_l_g_e_m_m_lowp_matrix_multiply_kernel.xhtml">CLGEMMLowpMatrixMultiplyKernel</a> </li>
 158 </ol>
 159
 160 <p>Definition at line <a class="el" href="_c_l_g_e_m_m_lowp_8h_source.xhtml#l00046">46</a> of file <a class="el" href="_c_l_g_e_m_m_lowp_8h_source.xhtml">CLGEMMLowp.h</a>.</p>
 161 </div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
 162 <a class="anchor" id="aac051c3731008575fe02d576e0bbca11"></a>
 163 <div class="memitem">
 164 <div class="memproto">
 165       <table class="memname">
 166         <tr>
 167           <td class="memname"><a class="el" href="classarm__compute_1_1_c_l_g_e_m_m_lowp.xhtml">CLGEMMLowp</a> </td>
 168           <td>(</td>
 169           <td class="paramname"></td><td>)</td>
 170           <td></td>
 171         </tr>
 172       </table>
 173 </div><div class="memdoc">
 174
 175 <p>Constructor. </p>
 176
 177 </div>
 178 </div>
 179 <h2 class="groupheader">Member Function Documentation</h2>
 180 <a class="anchor" id="a2300a95117613686ccf15b45f0f2ac79"></a>
 181 <div class="memitem">
 182 <div class="memproto">
 183       <table class="memname">
 184         <tr>
 185           <td class="memname">void configure </td>
 186           <td>(</td>
 187           <td class="paramtype">const <a class="el" href="classarm__compute_1_1_i_c_l_tensor.xhtml">ICLTensor</a> *&#160;</td>
 188           <td class="paramname"><em>a</em>, </td>
 189         </tr>
 190         <tr>
 191           <td class="paramkey"></td>
 192           <td></td>
 193           <td class="paramtype">const <a class="el" href="classarm__compute_1_1_i_c_l_tensor.xhtml">ICLTensor</a> *&#160;</td>
 194           <td class="paramname"><em>b</em>, </td>
 195         </tr>
 196         <tr>
 197           <td class="paramkey"></td>
 198           <td></td>
 199           <td class="paramtype"><a class="el" href="classarm__compute_1_1_i_c_l_tensor.xhtml">ICLTensor</a> *&#160;</td>
 200           <td class="paramname"><em>output</em>, </td>
 201         </tr>
 202         <tr>
 203           <td class="paramkey"></td>
 204           <td></td>
 205           <td class="paramtype">int32_t&#160;</td>
 206           <td class="paramname"><em>a_offset</em>, </td>
 207         </tr>
 208         <tr>
 209           <td class="paramkey"></td>
 210           <td></td>
 211           <td class="paramtype">int32_t&#160;</td>
 212           <td class="paramname"><em>b_offset</em>, </td>
 213         </tr>
 214         <tr>
 215           <td class="paramkey"></td>
 216           <td></td>
 217           <td class="paramtype">int32_t&#160;</td>
 218           <td class="paramname"><em>output_offset</em>, </td>
 219         </tr>
 220         <tr>
 221           <td class="paramkey"></td>
 222           <td></td>
 223           <td class="paramtype">int32_t&#160;</td>
 224           <td class="paramname"><em>output_mult_int</em>, </td>
 225         </tr>
 226         <tr>
 227           <td class="paramkey"></td>
 228           <td></td>
 229           <td class="paramtype">int32_t&#160;</td>
 230           <td class="paramname"><em>shift</em>&#160;</td>
 231         </tr>
 232         <tr>
 233           <td></td>
 234           <td>)</td>
 235           <td></td><td></td>
 236         </tr>
 237       </table>
 238 </div><div class="memdoc">
 239
 240 <p>Initialise the kernel's inputs, output. </p>
 241 <dl class="section note"><dt>Note</dt><dd>GEMM_LOWP: low precision matrix multiply kernel This kernel performs the following computation:</dd></dl>
 242 <ol type="1">
 243 <li>Convert a values from uint8 to int32 and add a_offset to each of them.</li>
 244 <li>Convert b values from uint8 to int32 and add b_offset to each of them.</li>
 245 <li>Compute the int32 matrix product of the resulting a * b.</li>
 246 <li>Add output_offset to each entry of the result.</li>
 247 <li>Multiply each entry of the result and round to the nearest integer</li>
 248 <li>Clamp the resulting int32 values to the [0..255] range and cast to uint8.</li>
 249 </ol>
 250 <dl class="params"><dt>Parameters</dt><dd>
 251   <table class="params">
 252     <tr><td class="paramdir">[in]</td><td class="paramname">a</td><td>First input tensor (Matrix A). Data types supported: U8. </td></tr>
 253     <tr><td class="paramdir">[in]</td><td class="paramname">b</td><td>Second input tensor (Matrix B). Data types supported: same as <code>a</code>. </td></tr>
 254     <tr><td class="paramdir">[out]</td><td class="paramname">output</td><td>Output tensor. Data types supported: same as <code>a</code>. </td></tr>
 255     <tr><td class="paramdir">[in]</td><td class="paramname">a_offset</td><td>Offset to be added to each element of the matrix A. </td></tr>
 256     <tr><td class="paramdir">[in]</td><td class="paramname">b_offset</td><td>Offset to be added to each element of the matrix B. </td></tr>
 257     <tr><td class="paramdir">[in]</td><td class="paramname">output_offset</td><td>Offset to be added to each element of the output matrix </td></tr>
 258     <tr><td class="paramdir">[in]</td><td class="paramname">output_mult_int</td><td>Multiplied with each element of the output matrix </td></tr>
 259     <tr><td class="paramdir">[in]</td><td class="paramname">shift</td><td>Number of bits to shift right the result. </td></tr>
 260   </table>
 261   </dd>
 262 </dl>
 263
 264 </div>
 265 </div>
 266 <a class="anchor" id="ad1717410afd0be936c6213a63c8005fb"></a>
 267 <div class="memitem">
 268 <div class="memproto">
 269 <table class="mlabels">
 270   <tr>
 271   <td class="mlabels-left">
 272       <table class="memname">
 273         <tr>
 274           <td class="memname">void run </td>
 275           <td>(</td>
 276           <td class="paramname"></td><td>)</td>
 277           <td></td>
 278         </tr>
 279       </table>
 280   </td>
 281   <td class="mlabels-right">
 282 <span class="mlabels"><span class="mlabel">override</span><span class="mlabel">virtual</span></span>  </td>
 283   </tr>
 284 </table>
 285 </div><div class="memdoc">
 286
 287 <p>Run the kernels contained in the function. </p>
 288 <p>For NEON kernels:</p><ul>
 289 <li>Multi-threading is used for the kernels which are parallelisable.</li>
 290 <li>By default std::thread::hardware_concurrency() threads are used.</li>
 291 </ul>
 292 <dl class="section note"><dt>Note</dt><dd><a class="el" href="classarm__compute_1_1_c_p_p_scheduler.xhtml#ae9dc1846ff1612778bbac85d46344aef">CPPScheduler::force_number_of_threads()</a> can be used to manually set the number of threads</dd></dl>
 293 <p>For OpenCL kernels:</p><ul>
 294 <li>All the kernels are enqueued on the queue associated with <a class="el" href="classarm__compute_1_1_c_l_scheduler.xhtml" title="Provides global access to a CL context and command queue. ">CLScheduler</a>.</li>
 295 <li>The queue is then flushed.</li>
 296 </ul>
 297 <dl class="section note"><dt>Note</dt><dd>The function will not block until the kernels are executed. It is the user's responsibility to wait. </dd></dl>
 298
 299 <p>Implements <a class="el" href="classarm__compute_1_1_i_function.xhtml#a18954417d3124a8095783ea13dc6d00b">IFunction</a>.</p>
 300
 301 </div>
 302 </div>
 303 <hr/>The documentation for this class was generated from the following file:<ul>
 304 <li>arm_compute/runtime/CL/functions/<a class="el" href="_c_l_g_e_m_m_lowp_8h_source.xhtml">CLGEMMLowp.h</a></li>
 305 </ul>
 306 </div><!-- contents -->
 307 </div><!-- doc-content -->
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 310   <ul>
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