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<a href="cpp-package_2include_2mxnet-cpp_2kvstore_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#ifndef MXNET_CPP_KVSTORE_H_</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#define MXNET_CPP_KVSTORE_H_</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="cpp-package_2include_2mxnet-cpp_2ndarray_8h.html">mxnet-cpp/ndarray.h</a>&quot;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacemxnet.html">mxnet</a> {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">namespace </span>cpp {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classmxnet_1_1cpp_1_1KVStore.html"> 36</a></span>&#160;<span class="keyword">class </span><a class="code" href="classmxnet_1_1cpp_1_1KVStore.html">KVStore</a> {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a9a78125d99e486dfe0dd9b29cbf81fff">SetType</a>(<span class="keyword">const</span> std::string&amp; type);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a4e81352497b7df2277e491bebf88de9a">RunServer</a>();</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a411bd548df87474ef805f6d8bad89692">Init</a>(<span class="keywordtype">int</span> key, <span class="keyword">const</span> <a class="code" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&amp; val);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a411bd548df87474ef805f6d8bad89692">Init</a>(<span class="keyword">const</span> std::string&amp; key, <span class="keyword">const</span> <a class="code" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&amp; val);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a411bd548df87474ef805f6d8bad89692">Init</a>(<span class="keyword">const</span> std::vector&lt;int&gt;&amp; keys, <span class="keyword">const</span> std::vector&lt;NDArray&gt;&amp; vals);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a411bd548df87474ef805f6d8bad89692">Init</a>(<span class="keyword">const</span> std::vector&lt;std::string&gt;&amp; keys, <span class="keyword">const</span> std::vector&lt;NDArray&gt;&amp; vals);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a9ba997cc97d81a10185f90628a859748">Push</a>(<span class="keywordtype">int</span> key, <span class="keyword">const</span> <a class="code" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&amp; val, <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a9ba997cc97d81a10185f90628a859748">Push</a>(<span class="keyword">const</span> std::string&amp; key, <span class="keyword">const</span> <a class="code" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&amp; val, <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a9ba997cc97d81a10185f90628a859748">Push</a>(<span class="keyword">const</span> std::vector&lt;int&gt;&amp; keys,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">const</span> std::vector&lt;NDArray&gt;&amp; vals,</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a9ba997cc97d81a10185f90628a859748">Push</a>(<span class="keyword">const</span> std::vector&lt;std::string&gt;&amp; keys,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">const</span> std::vector&lt;NDArray&gt;&amp; vals,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a19247df9277d196eadc8c692c95453d8">Pull</a>(<span class="keywordtype">int</span> key, <a class="code" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>* out, <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a19247df9277d196eadc8c692c95453d8">Pull</a>(<span class="keyword">const</span> std::string&amp; key, <a class="code" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>* out, <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a19247df9277d196eadc8c692c95453d8">Pull</a>(<span class="keyword">const</span> std::vector&lt;int&gt;&amp; keys, std::vector&lt;NDArray&gt;* outs, <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a19247df9277d196eadc8c692c95453d8">Pull</a>(<span class="keyword">const</span> std::vector&lt;std::string&gt;&amp; keys,</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; std::vector&lt;NDArray&gt;* outs,</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordtype">int</span> priority = 0);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="comment">// TODO(lx): put lr in optimizer or not?</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a12c16279d12dd9cccc545641b7bc72e5">SetOptimizer</a>(std::unique_ptr&lt;Optimizer&gt; optimizer, <span class="keywordtype">bool</span> local = <span class="keyword">false</span>);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keyword">static</span> std::string <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a3b94db90d0d1070887cd3b13188a60d6">GetType</a>();</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#a6a1586faccdea3d36088246b076d75b9">GetRank</a>();</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#ad82f402e30cb187b3feac663c5933d92">GetNumWorkers</a>();</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#ad5878723105a9f8a69170e4942bec851">Barrier</a>();</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">static</span> std::string <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html#ad946968681e5716d7d7fcf00ff24d423">GetRole</a>();</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html">KVStore</a>();</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keyword">static</span> <a class="code" href="include_2mxnet_2c__api_8h.html#a0543f53696ffcf5a7a2f0f4403f87623">KVStoreHandle</a>&amp; get_handle();</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keyword">static</span> std::unique_ptr&lt;Optimizer&gt;&amp; get_optimizer();</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keyword">static</span> <a class="code" href="classmxnet_1_1cpp_1_1KVStore.html">KVStore</a>*&amp; get_kvstore();</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> Controller(<span class="keywordtype">int</span> head, <span class="keyword">const</span> <span class="keywordtype">char</span>* body, <span class="keywordtype">void</span>* controller_handle);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> Updater(<span class="keywordtype">int</span> key, <a class="code" href="classmxnet_1_1NDArrayHandle.html">NDArrayHandle</a> recv, <a class="code" href="classmxnet_1_1NDArrayHandle.html">NDArrayHandle</a> local, <span class="keywordtype">void</span>* handle_);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;};</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;} <span class="comment">// namespace cpp</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;} <span class="comment">// namespace mxnet</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="preprocessor">#endif // MXNET_CPP_KVSTORE_H_</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="anamespacemxnet_html"><div class="ttname"><a href="namespacemxnet.html">mxnet</a></div><div class="ttdoc">namespace of mxnet</div><div class="ttdef"><b>Definition:</b> api_registry.h:33</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_ad5878723105a9f8a69170e4942bec851"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#ad5878723105a9f8a69170e4942bec851">mxnet::cpp::KVStore::Barrier</a></div><div class="ttdeci">static void Barrier()</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_ad946968681e5716d7d7fcf00ff24d423"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#ad946968681e5716d7d7fcf00ff24d423">mxnet::cpp::KVStore::GetRole</a></div><div class="ttdeci">static std::string GetRole()</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1NDArray_html"><div class="ttname"><a href="classmxnet_1_1cpp_1_1NDArray.html">mxnet::cpp::NDArray</a></div><div class="ttdoc">NDArray interface.</div><div class="ttdef"><b>Definition:</b> ndarray.h:122</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a9ba997cc97d81a10185f90628a859748"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a9ba997cc97d81a10185f90628a859748">mxnet::cpp::KVStore::Push</a></div><div class="ttdeci">static void Push(int key, const NDArray &amp;val, int priority=0)</div></div>
<div class="ttc" id="acpp-package_2include_2mxnet-cpp_2ndarray_8h_html"><div class="ttname"><a href="cpp-package_2include_2mxnet-cpp_2ndarray_8h.html">ndarray.h</a></div><div class="ttdoc">definition of ndarray</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a12c16279d12dd9cccc545641b7bc72e5"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a12c16279d12dd9cccc545641b7bc72e5">mxnet::cpp::KVStore::SetOptimizer</a></div><div class="ttdeci">static void SetOptimizer(std::unique_ptr&lt; Optimizer &gt; optimizer, bool local=false)</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a411bd548df87474ef805f6d8bad89692"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a411bd548df87474ef805f6d8bad89692">mxnet::cpp::KVStore::Init</a></div><div class="ttdeci">static void Init(int key, const NDArray &amp;val)</div></div>
<div class="ttc" id="ainclude_2mxnet_2c__api_8h_html_a0543f53696ffcf5a7a2f0f4403f87623"><div class="ttname"><a href="include_2mxnet_2c__api_8h.html#a0543f53696ffcf5a7a2f0f4403f87623">KVStoreHandle</a></div><div class="ttdeci">void * KVStoreHandle</div><div class="ttdoc">handle to KVStore</div><div class="ttdef"><b>Definition:</b> c_api.h:100</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a9a78125d99e486dfe0dd9b29cbf81fff"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a9a78125d99e486dfe0dd9b29cbf81fff">mxnet::cpp::KVStore::SetType</a></div><div class="ttdeci">static void SetType(const std::string &amp;type)</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a4e81352497b7df2277e491bebf88de9a"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a4e81352497b7df2277e491bebf88de9a">mxnet::cpp::KVStore::RunServer</a></div><div class="ttdeci">static void RunServer()</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a3b94db90d0d1070887cd3b13188a60d6"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a3b94db90d0d1070887cd3b13188a60d6">mxnet::cpp::KVStore::GetType</a></div><div class="ttdeci">static std::string GetType()</div></div>
<div class="ttc" id="aclassmxnet_1_1NDArrayHandle_html"><div class="ttname"><a href="classmxnet_1_1NDArrayHandle.html">mxnet::NDArrayHandle</a></div><div class="ttdef"><b>Definition:</b> ndarray_handle.h:40</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_ad82f402e30cb187b3feac663c5933d92"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#ad82f402e30cb187b3feac663c5933d92">mxnet::cpp::KVStore::GetNumWorkers</a></div><div class="ttdeci">static int GetNumWorkers()</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a6a1586faccdea3d36088246b076d75b9"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a6a1586faccdea3d36088246b076d75b9">mxnet::cpp::KVStore::GetRank</a></div><div class="ttdeci">static int GetRank()</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html">mxnet::cpp::KVStore</a></div><div class="ttdef"><b>Definition:</b> kvstore.h:36</div></div>
<div class="ttc" id="aclassmxnet_1_1cpp_1_1KVStore_html_a19247df9277d196eadc8c692c95453d8"><div class="ttname"><a href="classmxnet_1_1cpp_1_1KVStore.html#a19247df9277d196eadc8c692c95453d8">mxnet::cpp::KVStore::Pull</a></div><div class="ttdeci">static void Pull(int key, NDArray *out, int priority=0)</div></div>
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