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MindSpore Signal+ 使用手册
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<li class="toctree-l1"><a class="reference internal" href="../../quickstart/index.html">快速入门</a></li>
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<li class="toctree-l3"><a class="reference internal" href="loggrad.html">LogGrad</a></li>
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<li class="toctree-l3"><a class="reference internal" href="lstmgrad.html">LstmGrad</a></li>
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<li class="toctree-l3"><a class="reference internal" href="maxpoolgrad.html">MaxPoolGrad</a></li>
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<section id="subgrad">
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<h1>Subgrad<a class="headerlink" href="#subgrad" title="此标题的永久链接"></a></h1>
|
||
<p>计算逐元素减法（Sub）操作的梯度。该算子是 Sub 算子的反向传播（backward pass）部分，支持广播。</p>
|
||
<div class="math notranslate nohighlight">
|
||
\[\text{dx1} = \frac{\partial L}{\partial X1} = \frac{\partial L}{\partial Y} \times 1 = \frac{\partial L}{\partial Y}\]</div>
|
||
<div class="math notranslate nohighlight">
|
||
\[\text{dx2} = \frac{\partial L}{\partial X2} = \frac{\partial L}{\partial Y} \times (-1) = -\frac{\partial L}{\partial Y}\]</div>
|
||
<p>其中对于前向操作 <span class="math notranslate nohighlight">\(Y = X1 - X2\)</span>，<cite>dy</cite> 是来自后一层的上游梯度，<cite>dx1</cite> 和 <cite>dx2</cite> 分别是对 <cite>X1</cite> 和 <cite>X2</cite> 的梯度。</p>
|
||
<dl class="simple">
|
||
<dt>输入：</dt><dd><ul class="simple">
|
||
<li><p><strong>dy</strong> - 上游梯度数据地址（即 <span class="math notranslate nohighlight">\(\frac{\partial L}{\partial Y}\)</span>）。</p></li>
|
||
<li><dl class="simple">
|
||
<dt><strong>params</strong> - 参数打包成数组：</dt><dd><ul>
|
||
<li><p><strong>dx1_dims</strong> - 前向传播时第一个输入 <cite>x1</cite> 的维度信息数组（int*）。</p></li>
|
||
<li><p><strong>dx2_dims</strong> - 前向传播时第二个输入 <cite>x2</cite> 的维度信息数组（int*）。</p></li>
|
||
<li><p><strong>dy_dims</strong> - 上游梯度 <cite>dy</cite> 的维度信息数组（int*）。</p></li>
|
||
<li><p><strong>num_dims</strong> - 维度数（int）。</p></li>
|
||
<li><p><strong>temp_space</strong> - 临时空间。</p></li>
|
||
</ul>
|
||
</dd>
|
||
</dl>
|
||
</li>
|
||
<li><p><strong>core_mask</strong> - 核掩码（int），仅共享存储版本需要。</p></li>
|
||
</ul>
|
||
</dd>
|
||
<dt>输出：</dt><dd><ul class="simple">
|
||
<li><p><strong>dx1</strong> - 对 <cite>x1</cite> 的梯度数据地址。</p></li>
|
||
<li><p><strong>dx2</strong> - 对 <cite>x2</cite> 的梯度数据地址。</p></li>
|
||
</ul>
|
||
</dd>
|
||
<dt>支持平台：</dt><dd><p><code class="docutils literal notranslate"><span class="pre">FT78NE</span></code>
|
||
<code class="docutils literal notranslate"><span class="pre">MT7004</span></code></p>
|
||
</dd>
|
||
</dl>
|
||
<div class="admonition note">
|
||
<p class="admonition-title">备注</p>
|
||
<ul class="simple">
|
||
<li><p>MT7004 支持fp16, fp32</p></li>
|
||
<li><p>FT78NE 支持fp32</p></li>
|
||
<li><p>当输入张量被广播时，算子会自动处理广播维度的梯度累加</p></li>
|
||
</ul>
|
||
</div>
|
||
<p><strong>共享存储版本:</strong></p>
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.hp_sub_grad_s">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">hp_sub_grad_s</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dy</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx1</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx2</span></span>, <span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">params</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">core_mask</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.hp_sub_grad_s" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.fp_sub_grad_s">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">fp_sub_grad_s</span></span></span><span class="sig-paren">(</span><span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dy</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx1</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx2</span></span>, <span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">params</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">core_mask</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.fp_sub_grad_s" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<p><strong>C调用示例：</strong></p>
|
||
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="c1">//MT7004示例</span>
|
||
<span class="linenos"> 2</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><stdio.h></span>
|
||
<span class="linenos"> 3</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><subgrad.h></span>
|
||
<span class="linenos"> 4</span>
|
||
<span class="linenos"> 5</span><span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">argc</span><span class="p">,</span><span class="w"> </span><span class="kt">char</span><span class="o">*</span><span class="w"> </span><span class="n">argv</span><span class="p">[])</span><span class="w"> </span><span class="p">{</span>
|
||
<span class="linenos"> 6</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">dy</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x81000000</span><span class="p">;</span>
|
||
<span class="linenos"> 7</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">dx1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x82000000</span><span class="p">;</span>
|
||
<span class="linenos"> 8</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">dx2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x83000000</span><span class="p">;</span>
|
||
<span class="linenos"> 9</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">checkdx1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x84000000</span><span class="p">;</span>
|
||
<span class="linenos">10</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">checkdx2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x85000000</span><span class="p">;</span>
|
||
<span class="linenos">11</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="o">*</span><span class="n">tempsapce</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x86000000</span><span class="p">;</span>
|
||
<span class="linenos">12</span>
|
||
<span class="linenos">13</span><span class="w"> </span><span class="n">srand</span><span class="p">(</span><span class="n">seed</span><span class="o">++</span><span class="p">);</span>
|
||
<span class="linenos">14</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
|
||
<span class="linenos">15</span>
|
||
<span class="linenos">16</span><span class="w"> </span><span class="c1">// same shape</span>
|
||
<span class="linenos">17</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx1_dims</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">64</span><span class="p">};</span><span class="w"> </span><span class="c1">// 2x2</span>
|
||
<span class="hll"><span class="linenos">18</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx2_dims</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">64</span><span class="p">};</span><span class="w"> </span><span class="c1">// 2x2</span>
|
||
</span><span class="linenos">19</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dy_dims</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">64</span><span class="p">};</span><span class="w"> </span><span class="c1">// 2x2</span>
|
||
<span class="linenos">20</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num_dims</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span>
|
||
<span class="linenos">21</span>
|
||
<span class="linenos">22</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx1_num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">get_total_elements</span><span class="p">(</span><span class="n">num_dims</span><span class="p">,</span><span class="w"> </span><span class="n">dx1_dims</span><span class="p">);</span>
|
||
<span class="linenos">23</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx2_num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">get_total_elements</span><span class="p">(</span><span class="n">num_dims</span><span class="p">,</span><span class="w"> </span><span class="n">dx2_dims</span><span class="p">);</span>
|
||
<span class="linenos">24</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dy_num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">get_total_elements</span><span class="p">(</span><span class="n">num_dims</span><span class="p">,</span><span class="w"> </span><span class="n">dy_dims</span><span class="p">);</span>
|
||
<span class="linenos">25</span>
|
||
<span class="linenos">26</span>
|
||
<span class="linenos">27</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">dy_num</span><span class="p">;</span><span class="w"> </span><span class="o">++</span><span class="n">i</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||
<span class="linenos">28</span><span class="w"> </span><span class="n">dy</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="p">)(</span><span class="n">rand</span><span class="p">()</span><span class="w"> </span><span class="o">%</span><span class="w"> </span><span class="mi">100</span><span class="p">)</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">10.0f</span><span class="p">;</span>
|
||
<span class="linenos">29</span><span class="w"> </span><span class="p">}</span>
|
||
<span class="linenos">30</span>
|
||
<span class="linenos">31</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">17</span><span class="p">];</span>
|
||
<span class="linenos">32</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">dx1_dims</span><span class="p">;</span>
|
||
<span class="linenos">33</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">dx2_dims</span><span class="p">;</span>
|
||
<span class="linenos">34</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">dy_dims</span><span class="p">;</span>
|
||
<span class="linenos">35</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">num_dims</span><span class="p">;</span>
|
||
<span class="linenos">36</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">tempsapce</span><span class="p">;</span>
|
||
<span class="linenos">37</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">core_mask</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mh">0x0f</span><span class="p">;</span>
|
||
<span class="linenos">38</span><span class="w"> </span><span class="n">fp_sub_grad_s</span><span class="p">(</span><span class="n">dy</span><span class="p">,</span><span class="w"> </span><span class="n">dx1</span><span class="p">,</span><span class="w"> </span><span class="n">dx2</span><span class="p">,</span><span class="w"> </span><span class="n">params</span><span class="p">,</span><span class="w"> </span><span class="n">core_mask</span><span class="p">);</span>
|
||
<span class="linenos">39</span><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||
<span class="linenos">40</span>
|
||
<span class="linenos">41</span><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||
<span class="linenos">42</span><span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
<p><strong>私有存储版本:</strong></p>
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.hp_subgrad_p">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">hp_subgrad_p</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dy</span></span>, <span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">params</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx1</span></span>, <span class="n"><span class="pre">half</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx2</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.hp_subgrad_p" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="c function">
|
||
<dt class="sig sig-object c" id="c.fp_subgrad_p">
|
||
<span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">fp_subgrad_p</span></span></span><span class="sig-paren">(</span><span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dy</span></span>, <span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="kt"><span class="pre">long</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">params</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx1</span></span>, <span class="kt"><span class="pre">float</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">dx2</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.fp_subgrad_p" title="永久链接至目标"></a><br /></dt>
|
||
<dd></dd></dl>
|
||
|
||
<p><strong>C调用示例：</strong></p>
|
||
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="c1">//MT7004示例</span>
|
||
<span class="linenos"> 2</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><stdio.h></span>
|
||
<span class="linenos"> 3</span><span class="cp">#include</span><span class="w"> </span><span class="cpf"><subgrad.h></span>
|
||
<span class="linenos"> 4</span>
|
||
<span class="linenos"> 5</span><span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">argc</span><span class="p">,</span><span class="w"> </span><span class="kt">char</span><span class="o">*</span><span class="w"> </span><span class="n">argv</span><span class="p">[])</span><span class="w"> </span><span class="p">{</span>
|
||
<span class="linenos"> 6</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">dy</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10010000</span><span class="p">;</span>
|
||
<span class="linenos"> 7</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">dx1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10020000</span><span class="p">;</span>
|
||
<span class="linenos"> 8</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">dx2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10030000</span><span class="p">;</span>
|
||
<span class="linenos"> 9</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">checkdx1</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10040000</span><span class="p">;</span>
|
||
<span class="linenos">10</span><span class="w"> </span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="n">checkdx2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10050000</span><span class="p">;</span>
|
||
<span class="linenos">11</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="o">*</span><span class="n">tempsapce</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="o">*</span><span class="p">)</span><span class="mh">0x10060000</span><span class="p">;</span>
|
||
<span class="linenos">12</span>
|
||
<span class="linenos">13</span><span class="w"> </span><span class="n">srand</span><span class="p">(</span><span class="n">seed</span><span class="o">++</span><span class="p">);</span>
|
||
<span class="linenos">14</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
|
||
<span class="hll"><span class="linenos">15</span>
|
||
</span><span class="linenos">16</span><span class="w"> </span><span class="c1">// same shape</span>
|
||
<span class="linenos">17</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx1_dims</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">64</span><span class="p">};</span><span class="w"> </span><span class="c1">// 2x2</span>
|
||
<span class="linenos">18</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx2_dims</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">64</span><span class="p">};</span><span class="w"> </span><span class="c1">// 2x2</span>
|
||
<span class="linenos">19</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dy_dims</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">16</span><span class="p">,</span><span class="w"> </span><span class="mi">64</span><span class="p">};</span><span class="w"> </span><span class="c1">// 2x2</span>
|
||
<span class="linenos">20</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">num_dims</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span>
|
||
<span class="linenos">21</span>
|
||
<span class="linenos">22</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx1_num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">get_total_elements</span><span class="p">(</span><span class="n">num_dims</span><span class="p">,</span><span class="w"> </span><span class="n">dx1_dims</span><span class="p">);</span>
|
||
<span class="linenos">23</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dx2_num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">get_total_elements</span><span class="p">(</span><span class="n">num_dims</span><span class="p">,</span><span class="w"> </span><span class="n">dx2_dims</span><span class="p">);</span>
|
||
<span class="linenos">24</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">dy_num</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">get_total_elements</span><span class="p">(</span><span class="n">num_dims</span><span class="p">,</span><span class="w"> </span><span class="n">dy_dims</span><span class="p">);</span>
|
||
<span class="linenos">25</span>
|
||
<span class="linenos">26</span>
|
||
<span class="linenos">27</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">dy_num</span><span class="p">;</span><span class="w"> </span><span class="o">++</span><span class="n">i</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||
<span class="linenos">28</span><span class="w"> </span><span class="n">dy</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">float</span><span class="p">)(</span><span class="n">rand</span><span class="p">()</span><span class="w"> </span><span class="o">%</span><span class="w"> </span><span class="mi">100</span><span class="p">)</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">10.0f</span><span class="p">;</span>
|
||
<span class="linenos">29</span><span class="w"> </span><span class="p">}</span>
|
||
<span class="linenos">30</span>
|
||
<span class="linenos">31</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">17</span><span class="p">];</span>
|
||
<span class="linenos">32</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">dx1_dims</span><span class="p">;</span>
|
||
<span class="linenos">33</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">dx2_dims</span><span class="p">;</span>
|
||
<span class="linenos">34</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">dy_dims</span><span class="p">;</span>
|
||
<span class="linenos">35</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">num_dims</span><span class="p">;</span>
|
||
<span class="linenos">36</span><span class="w"> </span><span class="n">params</span><span class="p">[</span><span class="mi">4</span><span class="p">]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="kt">unsigned</span><span class="w"> </span><span class="kt">long</span><span class="w"> </span><span class="kt">long</span><span class="p">)</span><span class="n">tempsapce</span><span class="p">;</span>
|
||
<span class="linenos">37</span>
|
||
<span class="linenos">38</span><span class="w"> </span><span class="n">fp_sub_grad_p</span><span class="p">(</span><span class="n">dy</span><span class="p">,</span><span class="w"> </span><span class="n">dx1</span><span class="p">,</span><span class="w"> </span><span class="n">dx2</span><span class="p">,</span><span class="w"> </span><span class="n">params</span><span class="p">);</span>
|
||
<span class="linenos">39</span><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||
<span class="linenos">40</span><span class="p">}</span>
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
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