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<span class="target" id="index-0"></span><div class="section" id="running-the-jobs">
<div class="line-block">
<div class="line">To start a job, ECF uses the content of the ECF_JOB_CMD <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-variable"><em class="xref std std-term">variable</em></a>.</div>
<div class="line">By modifying this variable, it is possible to control where and how a <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-job-file"><em class="xref std std-term">job file</em></a> will run.</div>
<div class="line">The command should be used in conjunctions with the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-variable"><em class="xref std std-term">variable</em></a> ECF_JOB and ECF_JOBOUT.</div>
<div class="line">ECF_JOB contains the name of the file containing the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-job-file"><em class="xref std std-term">job file</em></a>, and ECF_JOBOUT contains</div>
<div class="line">the name of the file that should contain the output.</div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The default command ECF_JOB_CMD = %ECF_JOB% 1> %ECF_JOBOUT% 2>&1 &</p>
</div>
<div class="line-block">
<div class="line">Let us run the tasks on a remote machine. For that we could use the unix command rsh.</div>
<div class="line">We would like the name of the host to be defined by an <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-variable"><em class="xref std std-term">variable</em></a> called HOST.</div>
<div class="line">We assume that all the files are visible on all the hosts, i.e. using NFS.</div>
</div>
<p>In the examples below replace the string ?????? with a host name of your choice.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p>The environment you get when submitting tasks remotely is different from that when submitting locally.
This depends on how your system is set up. Here we need to set PATH, to allow <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-child-command"><em class="xref std std-term">child command</em></a>‘s to be used.
So add the following line into your <a class="reference internal" href="/wiki/display/ECFLOW/Understanding+Includes#head-h"><em>head.h</em></a> file before the call to <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecflow-client"><em class="xref std std-term">ecflow_client</em></a> –init</p>
<p class="last">> export PATH=$PATH:/usr/local/apps/ecflow/current/bin</p>
</div>
<div class="line-block">
<div class="line">You may experience other problems using rsh, caused by standard unix issues.</div>
<div class="line">Make sure that the file $HOME/.rhosts contains a line with your user ID and</div>
<div class="line">the machine where your server is running.</div>
</div>
<p>Modify the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-family"><em class="xref std std-term">family</em></a> f5 so that all its tasks will run on another machine in the classroom</p>
<div class="section" id="text">
<h2>Text<a class="headerlink" href="#text" title="Permalink to this headline">¶</a></h2>
<p>If your login shell is csh, you should define ECF_JOB_CMD as:</p>
<div class="highlight-python"><pre>edit ECF_JOB_CMD "rsh %HOST% '%ECF_JOB% >& %ECF_JOBOUT%'"</pre>
</div>
<div class="highlight-python"><pre># Definition of the suite test
suite test
edit ECF_INCLUDE "$HOME/course"
edit ECF_HOME "$HOME/course"
limit l1 2
family f5
edit HOST ??????
edit ECF_JOB_CMD "rsh %HOST% '%ECF_JOB% > %ECF_JOBOUT% 2>&1 &'"
inlimit l1
edit SLEEP 20
task t1
task t2
task t3
task t4
task t5
task t6
task t7
task t8
task t9
endfamily
endsuite</pre>
</div>
</div>
<div class="section" id="python">
<h2>Python<a class="headerlink" href="#python" title="Permalink to this headline">¶</a></h2>
<p>In python modify the function create_family_f5() created in the earlier page:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="c">#!/usr/bin/env python2.7</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">ecflow</span>
<span class="k">def</span> <span class="nf">create_family_f5</span><span class="p">()</span> <span class="p">:</span>
<span class="n">f5</span> <span class="o">=</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">Family</span><span class="p">(</span><span class="s">"f5"</span><span class="p">)</span>
<span class="n">f5</span><span class="o">.</span><span class="n">add_inlimit</span><span class="p">(</span><span class="s">"l1"</span><span class="p">)</span>
<span class="n">f5</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">"HOST"</span><span class="p">,</span> <span class="s">"??????"</span><span class="p">)</span>
<span class="n">f5</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">"ECF_JOB_CMD"</span><span class="p">,</span> <span class="s">"rsh %HOST% '</span><span class="si">%E</span><span class="s">CF_JOB% > </span><span class="si">%E</span><span class="s">CF_JOBOUT% 2>&1 &'"</span><span class="p">)</span>
<span class="n">f5</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">"SLEEP"</span><span class="p">,</span> <span class="mi">20</span><span class="p">)</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">10</span><span class="p">):</span>
<span class="n">f5</span><span class="o">.</span><span class="n">add_task</span><span class="p">(</span> <span class="s">"t"</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">)</span> <span class="p">)</span>
<span class="k">return</span> <span class="n">f5</span>
<span class="k">print</span> <span class="s">"Creating suite definition"</span>
<span class="n">defs</span> <span class="o">=</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">Defs</span><span class="p">()</span>
<span class="n">suite</span> <span class="o">=</span> <span class="n">defs</span><span class="o">.</span><span class="n">add_suite</span><span class="p">(</span><span class="s">"test"</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">"ECF_INCLUDE"</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">getenv</span><span class="p">(</span><span class="s">"HOME"</span><span class="p">)</span> <span class="o">+</span> <span class="s">"/course"</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">"ECF_HOME"</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">getenv</span><span class="p">(</span><span class="s">"HOME"</span><span class="p">)</span> <span class="o">+</span> <span class="s">"/course"</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_limit</span><span class="p">(</span><span class="s">"l1"</span><span class="p">,</span> <span class="mi">2</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_family</span><span class="p">(</span> <span class="n">create_family_f5</span><span class="p">()</span> <span class="p">)</span>
<span class="k">print</span> <span class="s">"Checking job creation: .ecf -> .job0"</span>
<span class="k">print</span> <span class="n">defs</span><span class="o">.</span><span class="n">check_job_creation</span><span class="p">()</span>
<span class="k">print</span> <span class="s">"Saving definition to file 'test.def'"</span>
<span class="n">defs</span><span class="o">.</span><span class="n">save_as_defs</span><span class="p">(</span><span class="s">"test.def"</span><span class="p">)</span>
</pre></div>
</div>
<p><strong>What to do:</strong></p>
<ol class="arabic simple">
<li>Change the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite-definition"><em class="xref std std-term">suite definition</em></a></li>
<li>Load and begin the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite"><em class="xref std std-term">suite</em></a></li>
<li>It may not work immediately. Have a look in the file <tt class="file docutils literal"><span class="pre">$HOME/course/</span><em><span class="pre">host</span></em><span class="pre">.</span><em><span class="pre">port</span></em><span class="pre">.ecf.log</span></tt> to see why.</li>
<li>What do you need to do in order to have the task <strong>/test/f5/t9</strong> run on another machine? Try your solution.</li>
</ol>
</div>
</div>
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