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  <h1>Source code for pygraph.utils.parallel</h1><div class="highlight"><pre>
<span></span><span class="ch">#!/usr/bin/env python3</span>
<span class="c1"># -*- coding: utf-8 -*-</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">Created on Tue Dec 11 11:39:46 2018</span>
<span class="sd">Parallel aid functions.</span>
<span class="sd">@author: ljia</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">import</span> <span class="nn">multiprocessing</span>
<span class="kn">from</span> <span class="nn">multiprocessing</span> <span class="k">import</span> <span class="n">Pool</span>
<span class="kn">from</span> <span class="nn">tqdm</span> <span class="k">import</span> <span class="n">tqdm</span>
<span class="kn">import</span> <span class="nn">sys</span>

<div class="viewcode-block" id="parallel_me"><a class="viewcode-back" href="../../../pygraph.utils.html#pygraph.utils.parallel.parallel_me">[docs]</a><span class="k">def</span> <span class="nf">parallel_me</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">func_assign</span><span class="p">,</span> <span class="n">var_to_assign</span><span class="p">,</span> <span class="n">itr</span><span class="p">,</span> <span class="n">len_itr</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">init_worker</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> 
                <span class="n">glbv</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">method</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">n_jobs</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">chunksize</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">itr_desc</span><span class="o">=</span><span class="s1">&#39;&#39;</span><span class="p">,</span>
                <span class="n">verbose</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
    <span class="sd">&#39;&#39;&#39;</span>
<span class="sd">    &#39;&#39;&#39;</span>
    <span class="k">if</span> <span class="n">method</span> <span class="o">==</span> <span class="s1">&#39;imap_unordered&#39;</span><span class="p">:</span>
        <span class="k">if</span> <span class="n">glbv</span><span class="p">:</span> <span class="c1"># global varibles required.</span>
<span class="c1">#            def init_worker(v_share):</span>
<span class="c1">#                global G_var</span>
<span class="c1">#                G_var = v_share</span>
            <span class="k">if</span> <span class="n">n_jobs</span> <span class="o">==</span> <span class="kc">None</span><span class="p">:</span>
                <span class="n">n_jobs</span> <span class="o">=</span> <span class="n">multiprocessing</span><span class="o">.</span><span class="n">cpu_count</span><span class="p">()</span>
            <span class="k">with</span> <span class="n">Pool</span><span class="p">(</span><span class="n">processes</span><span class="o">=</span><span class="n">n_jobs</span><span class="p">,</span> <span class="n">initializer</span><span class="o">=</span><span class="n">init_worker</span><span class="p">,</span> 
                      <span class="n">initargs</span><span class="o">=</span><span class="n">glbv</span><span class="p">)</span> <span class="k">as</span> <span class="n">pool</span><span class="p">:</span>                
                <span class="k">if</span> <span class="n">chunksize</span> <span class="o">==</span> <span class="kc">None</span><span class="p">:</span>
                    <span class="k">if</span> <span class="n">len_itr</span> <span class="o">&lt;</span> <span class="mi">100</span> <span class="o">*</span> <span class="n">n_jobs</span><span class="p">:</span>
                        <span class="n">chunksize</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">len_itr</span> <span class="o">/</span> <span class="n">n_jobs</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
                    <span class="k">else</span><span class="p">:</span>
                        <span class="n">chunksize</span> <span class="o">=</span> <span class="mi">100</span>
                <span class="k">for</span> <span class="n">result</span> <span class="ow">in</span> <span class="p">(</span><span class="n">tqdm</span><span class="p">(</span><span class="n">pool</span><span class="o">.</span><span class="n">imap_unordered</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">itr</span><span class="p">,</span> <span class="n">chunksize</span><span class="p">),</span>
                    <span class="n">desc</span><span class="o">=</span><span class="n">itr_desc</span><span class="p">,</span> <span class="n">file</span><span class="o">=</span><span class="n">sys</span><span class="o">.</span><span class="n">stdout</span><span class="p">)</span> <span class="k">if</span> <span class="n">verbose</span> <span class="k">else</span> 
                    <span class="n">pool</span><span class="o">.</span><span class="n">imap_unordered</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">itr</span><span class="p">,</span> <span class="n">chunksize</span><span class="p">)):</span>
                    <span class="n">func_assign</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="n">var_to_assign</span><span class="p">)</span>
        <span class="k">else</span><span class="p">:</span>
            <span class="k">if</span> <span class="n">n_jobs</span> <span class="o">==</span> <span class="kc">None</span><span class="p">:</span>
                <span class="n">n_jobs</span> <span class="o">=</span> <span class="n">multiprocessing</span><span class="o">.</span><span class="n">cpu_count</span><span class="p">()</span>
            <span class="k">with</span> <span class="n">Pool</span><span class="p">(</span><span class="n">processes</span><span class="o">=</span><span class="n">n_jobs</span><span class="p">)</span> <span class="k">as</span> <span class="n">pool</span><span class="p">:</span>
                <span class="k">if</span> <span class="n">chunksize</span> <span class="o">==</span> <span class="kc">None</span><span class="p">:</span>
                    <span class="k">if</span> <span class="n">len_itr</span> <span class="o">&lt;</span> <span class="mi">100</span> <span class="o">*</span> <span class="n">n_jobs</span><span class="p">:</span>
                        <span class="n">chunksize</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">len_itr</span> <span class="o">/</span> <span class="n">n_jobs</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
                    <span class="k">else</span><span class="p">:</span>
                        <span class="n">chunksize</span> <span class="o">=</span> <span class="mi">100</span>
                <span class="k">for</span> <span class="n">result</span> <span class="ow">in</span> <span class="p">(</span><span class="n">tqdm</span><span class="p">(</span><span class="n">pool</span><span class="o">.</span><span class="n">imap_unordered</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">itr</span><span class="p">,</span> <span class="n">chunksize</span><span class="p">),</span>
                    <span class="n">desc</span><span class="o">=</span><span class="n">itr_desc</span><span class="p">,</span> <span class="n">file</span><span class="o">=</span><span class="n">sys</span><span class="o">.</span><span class="n">stdout</span><span class="p">)</span> <span class="k">if</span> <span class="n">verbose</span> <span class="k">else</span> 
                    <span class="n">pool</span><span class="o">.</span><span class="n">imap_unordered</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">itr</span><span class="p">,</span> <span class="n">chunksize</span><span class="p">)):</span>
                    <span class="n">func_assign</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="n">var_to_assign</span><span class="p">)</span></div>
            
                    
<div class="viewcode-block" id="parallel_gm"><a class="viewcode-back" href="../../../pygraph.utils.html#pygraph.utils.parallel.parallel_gm">[docs]</a><span class="k">def</span> <span class="nf">parallel_gm</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">Kmatrix</span><span class="p">,</span> <span class="n">Gn</span><span class="p">,</span> <span class="n">init_worker</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">glbv</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> 
                <span class="n">method</span><span class="o">=</span><span class="s1">&#39;imap_unordered&#39;</span><span class="p">,</span> <span class="n">n_jobs</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">chunksize</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> 
                <span class="n">verbose</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
    <span class="kn">from</span> <span class="nn">itertools</span> <span class="k">import</span> <span class="n">combinations_with_replacement</span>
    <span class="k">def</span> <span class="nf">func_assign</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="n">var_to_assign</span><span class="p">):</span>
        <span class="n">var_to_assign</span><span class="p">[</span><span class="n">result</span><span class="p">[</span><span class="mi">0</span><span class="p">]][</span><span class="n">result</span><span class="p">[</span><span class="mi">1</span><span class="p">]]</span> <span class="o">=</span> <span class="n">result</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
        <span class="n">var_to_assign</span><span class="p">[</span><span class="n">result</span><span class="p">[</span><span class="mi">1</span><span class="p">]][</span><span class="n">result</span><span class="p">[</span><span class="mi">0</span><span class="p">]]</span> <span class="o">=</span> <span class="n">result</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
    <span class="n">itr</span> <span class="o">=</span> <span class="n">combinations_with_replacement</span><span class="p">(</span><span class="nb">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">Gn</span><span class="p">)),</span> <span class="mi">2</span><span class="p">)</span>
    <span class="n">len_itr</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">Gn</span><span class="p">)</span> <span class="o">*</span> <span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">Gn</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">/</span> <span class="mi">2</span><span class="p">)</span>
    <span class="n">parallel_me</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">func_assign</span><span class="p">,</span> <span class="n">Kmatrix</span><span class="p">,</span> <span class="n">itr</span><span class="p">,</span> <span class="n">len_itr</span><span class="o">=</span><span class="n">len_itr</span><span class="p">,</span>
        <span class="n">init_worker</span><span class="o">=</span><span class="n">init_worker</span><span class="p">,</span> <span class="n">glbv</span><span class="o">=</span><span class="n">glbv</span><span class="p">,</span> <span class="n">method</span><span class="o">=</span><span class="n">method</span><span class="p">,</span> <span class="n">n_jobs</span><span class="o">=</span><span class="n">n_jobs</span><span class="p">,</span> 
        <span class="n">chunksize</span><span class="o">=</span><span class="n">chunksize</span><span class="p">,</span> <span class="n">itr_desc</span><span class="o">=</span><span class="s1">&#39;calculating kernels&#39;</span><span class="p">,</span> <span class="n">verbose</span><span class="o">=</span><span class="n">verbose</span><span class="p">)</span></div>
</pre></div>

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