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<h1 id="ansys-mapdl">ANSYS - MAPDL<a class="headerlink" href="#ansys-mapdl" title="Permanent link"></a></h1>
<h1 id="ansys-mechanical-apdl">ANSYS - Mechanical APDL<a class="headerlink" href="#ansys-mechanical-apdl" title="Permanent link"></a></h1>
<p>Is always recommended to check which parameters are available in Mechanical APDL and adapt the below examples according to your needs.
For that, please refer to the official Mechanical APDL documentation.</p>
<h2 id="running-mechanical-apdl-jobs">Running Mechanical APDL jobs<a class="headerlink" href="#running-mechanical-apdl-jobs" title="Permanent link"></a></h2>
<h3 id="pmodules">PModules<a class="headerlink" href="#pmodules" title="Permanent link"></a></h3>
<p>Is strongly recommended the use of the latest ANSYS software available in PModules.</p>
<div class="language-bash highlight"><span class="filename">Bash</span><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a>module<span class="w"> </span>use<span class="w"> </span>unstable
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>module<span class="w"> </span>load<span class="w"> </span>Pmodules/1.1.6
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a>module<span class="w"> </span>use<span class="w"> </span>overlay_merlin
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>module<span class="w"> </span>load<span class="w"> </span>ANSYS/2022R1
</span></code></pre></div>
<h3 id="interactive-rsm-from-remote-psi-workstations">Interactive: RSM from remote PSI Workstations<a class="headerlink" href="#interactive-rsm-from-remote-psi-workstations" title="Permanent link"></a></h3>
<p>Is possible to run Mechanical through RSM from remote PSI (Linux or Windows)
Workstation having a local installation of ANSYS Mechanical and RSM client.
For that, please refer to the <strong><em><a href="../ansys-rsm/">ANSYS RSM</a></em></strong> in the Merlin
documentation for further information of how to setup a RSM client for
submitting jobs to Merlin.</p>
<h3 id="non-interactive-sbatch">Non-interactive: sbatch<a class="headerlink" href="#non-interactive-sbatch" title="Permanent link"></a></h3>
<p>Running jobs with <code>sbatch</code> is always the recommended method. This makes the use
of the resources more efficient. Notice that for running non interactive
Mechanical APDL jobs one must specify the <code>-b</code> option.</p>
<h4 id="serial-example">Serial example<a class="headerlink" href="#serial-example" title="Permanent link"></a></h4>
<p>This example shows a very basic serial job.</p>
<div class="language-bash highlight"><span class="filename">Bash</span><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="ch">#!/bin/bash</span>
</span><span id="__span-1-2"><a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="c1">#SBATCH --job-name=MAPDL # Job Name</span>
</span><span id="__span-1-3"><a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a><span class="c1">#SBATCH --partition=hourly # Using 'daily' will grant higher priority than 'general'</span>
</span><span id="__span-1-4"><a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="c1">#SBATCH --time=0-01:00:00 # Time needed for running the job. Must match with 'partition' limits.</span>
</span><span id="__span-1-5"><a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="c1">#SBATCH --cpus-per-task=1 # Double if hyperthreading enabled</span>
</span><span id="__span-1-6"><a id="__codelineno-1-6" name="__codelineno-1-6" href="#__codelineno-1-6"></a><span class="c1">#SBATCH --ntasks-per-core=1 # Double if hyperthreading enabled</span>
</span><span id="__span-1-7"><a id="__codelineno-1-7" name="__codelineno-1-7" href="#__codelineno-1-7"></a><span class="c1">#SBATCH --hint=nomultithread # Disable Hyperthreading</span>
</span><span id="__span-1-8"><a id="__codelineno-1-8" name="__codelineno-1-8" href="#__codelineno-1-8"></a><span class="c1">#SBATCH --error=slurm-%j.err # Define your error file</span>
</span><span id="__span-1-9"><a id="__codelineno-1-9" name="__codelineno-1-9" href="#__codelineno-1-9"></a>
</span><span id="__span-1-10"><a id="__codelineno-1-10" name="__codelineno-1-10" href="#__codelineno-1-10"></a>module<span class="w"> </span>use<span class="w"> </span>unstable
</span><span id="__span-1-11"><a id="__codelineno-1-11" name="__codelineno-1-11" href="#__codelineno-1-11"></a>module<span class="w"> </span>load<span class="w"> </span>ANSYS/2020R1-1
</span><span id="__span-1-12"><a id="__codelineno-1-12" name="__codelineno-1-12" href="#__codelineno-1-12"></a>
</span><span id="__span-1-13"><a id="__codelineno-1-13" name="__codelineno-1-13" href="#__codelineno-1-13"></a><span class="c1"># [Optional:BEGIN] Specify your license server if this is not 'lic-ansys.psi.ch'</span>
</span><span id="__span-1-14"><a id="__codelineno-1-14" name="__codelineno-1-14" href="#__codelineno-1-14"></a><span class="nv">LICENSE_SERVER</span><span class="o">=</span>&lt;your_license_server&gt;
</span><span id="__span-1-15"><a id="__codelineno-1-15" name="__codelineno-1-15" href="#__codelineno-1-15"></a><span class="nb">export</span><span class="w"> </span><span class="nv">ANSYSLMD_LICENSE_FILE</span><span class="o">=</span><span class="m">1055</span>@<span class="nv">$LICENSE_SERVER</span>
</span><span id="__span-1-16"><a id="__codelineno-1-16" name="__codelineno-1-16" href="#__codelineno-1-16"></a><span class="nb">export</span><span class="w"> </span><span class="nv">ANSYSLI_SERVERS</span><span class="o">=</span><span class="m">2325</span>@<span class="nv">$LICENSE_SERVER</span>
</span><span id="__span-1-17"><a id="__codelineno-1-17" name="__codelineno-1-17" href="#__codelineno-1-17"></a><span class="c1"># [Optional:END]</span>
</span><span id="__span-1-18"><a id="__codelineno-1-18" name="__codelineno-1-18" href="#__codelineno-1-18"></a>
</span><span id="__span-1-19"><a id="__codelineno-1-19" name="__codelineno-1-19" href="#__codelineno-1-19"></a><span class="nv">SOLVER_FILE</span><span class="o">=</span>/data/user/caubet_m/MAPDL/mysolver.in
</span><span id="__span-1-20"><a id="__codelineno-1-20" name="__codelineno-1-20" href="#__codelineno-1-20"></a>mapdl<span class="w"> </span>-b<span class="w"> </span>-i<span class="w"> </span><span class="s2">"</span><span class="nv">$SOLVER_FILE</span><span class="s2">"</span>
</span></code></pre></div>
<p>One can enable hypertheading by defining <code>--hint=multithread</code>,
<code>--cpus-per-task=2</code> and <code>--ntasks-per-core=2</code>. However, this is in general not
recommended, unless one can ensure that can be beneficial.</p>
<h4 id="smp-based-example">SMP-based example<a class="headerlink" href="#smp-based-example" title="Permanent link"></a></h4>
<p>This example shows how to running Mechanical APDL in Shared-Memory Parallelism
mode. It limits the use to 1 single node, but by using many cores. In the
example below, we use a node by using all his cores and the whole memory.</p>
<div class="language-bash highlight"><span class="filename">Bash</span><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="ch">#!/bin/bash</span>
</span><span id="__span-2-2"><a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="c1">#SBATCH --job-name=MAPDL # Job Name</span>
</span><span id="__span-2-3"><a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="c1">#SBATCH --partition=hourly # Using 'daily' will grant higher priority than 'general'</span>
</span><span id="__span-2-4"><a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="c1">#SBATCH --time=0-01:00:00 # Time needed for running the job. Must match with 'partition' limits.</span>
</span><span id="__span-2-5"><a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="c1">#SBATCH --nodes=1 # Number of nodes</span>
</span><span id="__span-2-6"><a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a><span class="c1">#SBATCH --ntasks=1 # Number of tasks</span>
</span><span id="__span-2-7"><a id="__codelineno-2-7" name="__codelineno-2-7" href="#__codelineno-2-7"></a><span class="c1">#SBATCH --cpus-per-task=44 # Double if hyperthreading enabled</span>
</span><span id="__span-2-8"><a id="__codelineno-2-8" name="__codelineno-2-8" href="#__codelineno-2-8"></a><span class="c1">#SBATCH --hint=nomultithread # Disable Hyperthreading</span>
</span><span id="__span-2-9"><a id="__codelineno-2-9" name="__codelineno-2-9" href="#__codelineno-2-9"></a><span class="c1">#SBATCH --error=slurm-%j.err # Define a file for standard error messages</span>
</span><span id="__span-2-10"><a id="__codelineno-2-10" name="__codelineno-2-10" href="#__codelineno-2-10"></a><span class="c1">#SBATCH --exclusive # Uncomment if you want exclusive usage of the nodes</span>
</span><span id="__span-2-11"><a id="__codelineno-2-11" name="__codelineno-2-11" href="#__codelineno-2-11"></a>
</span><span id="__span-2-12"><a id="__codelineno-2-12" name="__codelineno-2-12" href="#__codelineno-2-12"></a>module<span class="w"> </span>use<span class="w"> </span>unstable
</span><span id="__span-2-13"><a id="__codelineno-2-13" name="__codelineno-2-13" href="#__codelineno-2-13"></a>module<span class="w"> </span>load<span class="w"> </span>ANSYS/2020R1-1
</span><span id="__span-2-14"><a id="__codelineno-2-14" name="__codelineno-2-14" href="#__codelineno-2-14"></a>
</span><span id="__span-2-15"><a id="__codelineno-2-15" name="__codelineno-2-15" href="#__codelineno-2-15"></a><span class="c1"># [Optional:BEGIN] Specify your license server if this is not 'lic-ansys.psi.ch'</span>
</span><span id="__span-2-16"><a id="__codelineno-2-16" name="__codelineno-2-16" href="#__codelineno-2-16"></a><span class="nv">LICENSE_SERVER</span><span class="o">=</span>&lt;your_license_server&gt;
</span><span id="__span-2-17"><a id="__codelineno-2-17" name="__codelineno-2-17" href="#__codelineno-2-17"></a><span class="nb">export</span><span class="w"> </span><span class="nv">ANSYSLMD_LICENSE_FILE</span><span class="o">=</span><span class="m">1055</span>@<span class="nv">$LICENSE_SERVER</span>
</span><span id="__span-2-18"><a id="__codelineno-2-18" name="__codelineno-2-18" href="#__codelineno-2-18"></a><span class="nb">export</span><span class="w"> </span><span class="nv">ANSYSLI_SERVERS</span><span class="o">=</span><span class="m">2325</span>@<span class="nv">$LICENSE_SERVER</span>
</span><span id="__span-2-19"><a id="__codelineno-2-19" name="__codelineno-2-19" href="#__codelineno-2-19"></a><span class="c1"># [Optional:END]</span>
</span><span id="__span-2-20"><a id="__codelineno-2-20" name="__codelineno-2-20" href="#__codelineno-2-20"></a>
</span><span id="__span-2-21"><a id="__codelineno-2-21" name="__codelineno-2-21" href="#__codelineno-2-21"></a><span class="nv">SOLVER_FILE</span><span class="o">=</span>/data/user/caubet_m/MAPDL/mysolver.in
</span><span id="__span-2-22"><a id="__codelineno-2-22" name="__codelineno-2-22" href="#__codelineno-2-22"></a>mapdl<span class="w"> </span>-b<span class="w"> </span>-np<span class="w"> </span><span class="si">${</span><span class="nv">SLURM_CPUS_PER_TASK</span><span class="si">}</span><span class="w"> </span>-i<span class="w"> </span><span class="s2">"</span><span class="nv">$SOLVER_FILE</span><span class="s2">"</span>
</span></code></pre></div>
<p>In the above example, one can reduce the number of <strong>cpus per task</strong>. Here
usually <code>--exclusive</code> is recommended if one needs to use the whole memory.</p>
<p>For <strong>SMP</strong> runs, one might try the hyperthreading mode by doubling the proper
settings (<code>--cpus-per-task</code>), in some cases it might be beneficial.</p>
<p>Please notice that <code>--ntasks-per-core=1</code> is not defined here, this is because
we want to run 1 task on many cores! As an alternative, one can explore
<code>--ntasks-per-socket</code> or <code>--ntasks-per-node</code> for fine grained configurations.</p>
<h4 id="mpi-based-example">MPI-based example<a class="headerlink" href="#mpi-based-example" title="Permanent link"></a></h4>
<p>This example enables Distributed ANSYS for running Mechanical APDL using a Slurm batch script.</p>
<div class="language-bash highlight"><span class="filename">Bash</span><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="ch">#!/bin/bash</span>
</span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="c1">#SBATCH --job-name=MAPDL # Job Name</span>
</span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="c1">#SBATCH --partition=hourly # Using 'daily' will grant higher priority than 'general'</span>
</span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="c1">#SBATCH --time=0-01:00:00 # Time needed for running the job. Must match with 'partition' limits.</span>
</span><span id="__span-3-5"><a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="c1">#SBATCH --nodes=1 # Number of nodes</span>
</span><span id="__span-3-6"><a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="c1">#SBATCH --ntasks=44 # Number of tasks</span>
</span><span id="__span-3-7"><a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="c1">#SBATCH --cpus-per-task=1 # Double if hyperthreading enabled</span>
</span><span id="__span-3-8"><a id="__codelineno-3-8" name="__codelineno-3-8" href="#__codelineno-3-8"></a><span class="c1">#SBATCH --ntasks-per-core=1 # Run one task per core</span>
</span><span id="__span-3-9"><a id="__codelineno-3-9" name="__codelineno-3-9" href="#__codelineno-3-9"></a><span class="c1">#SBATCH --hint=nomultithread # Disable Hyperthreading</span>
</span><span id="__span-3-10"><a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="c1">#SBATCH --error=slurm-%j.err # Define a file for standard error messages</span>
</span><span id="__span-3-11"><a id="__codelineno-3-11" name="__codelineno-3-11" href="#__codelineno-3-11"></a><span class="c1">##SBATCH --exclusive # Uncomment if you want exclusive usage of the nodes</span>
</span><span id="__span-3-12"><a id="__codelineno-3-12" name="__codelineno-3-12" href="#__codelineno-3-12"></a>
</span><span id="__span-3-13"><a id="__codelineno-3-13" name="__codelineno-3-13" href="#__codelineno-3-13"></a>module<span class="w"> </span>use<span class="w"> </span>unstable
</span><span id="__span-3-14"><a id="__codelineno-3-14" name="__codelineno-3-14" href="#__codelineno-3-14"></a>module<span class="w"> </span>load<span class="w"> </span>ANSYS/2020R1-1
</span><span id="__span-3-15"><a id="__codelineno-3-15" name="__codelineno-3-15" href="#__codelineno-3-15"></a>
</span><span id="__span-3-16"><a id="__codelineno-3-16" name="__codelineno-3-16" href="#__codelineno-3-16"></a><span class="c1"># [Optional:BEGIN] Specify your license server if this is not 'lic-ansys.psi.ch'</span>
</span><span id="__span-3-17"><a id="__codelineno-3-17" name="__codelineno-3-17" href="#__codelineno-3-17"></a><span class="nv">LICENSE_SERVER</span><span class="o">=</span>&lt;your_license_server&gt;
</span><span id="__span-3-18"><a id="__codelineno-3-18" name="__codelineno-3-18" href="#__codelineno-3-18"></a><span class="nb">export</span><span class="w"> </span><span class="nv">ANSYSLMD_LICENSE_FILE</span><span class="o">=</span><span class="m">1055</span>@<span class="nv">$LICENSE_SERVER</span>
</span><span id="__span-3-19"><a id="__codelineno-3-19" name="__codelineno-3-19" href="#__codelineno-3-19"></a><span class="nb">export</span><span class="w"> </span><span class="nv">ANSYSLI_SERVERS</span><span class="o">=</span><span class="m">2325</span>@<span class="nv">$LICENSE_SERVER</span>
</span><span id="__span-3-20"><a id="__codelineno-3-20" name="__codelineno-3-20" href="#__codelineno-3-20"></a><span class="c1"># [Optional:END]</span>
</span><span id="__span-3-21"><a id="__codelineno-3-21" name="__codelineno-3-21" href="#__codelineno-3-21"></a>
</span><span id="__span-3-22"><a id="__codelineno-3-22" name="__codelineno-3-22" href="#__codelineno-3-22"></a><span class="nv">SOLVER_FILE</span><span class="o">=</span>input.dat
</span><span id="__span-3-23"><a id="__codelineno-3-23" name="__codelineno-3-23" href="#__codelineno-3-23"></a>
</span><span id="__span-3-24"><a id="__codelineno-3-24" name="__codelineno-3-24" href="#__codelineno-3-24"></a><span class="c1"># INTELMPI=no for IBM MPI</span>
</span><span id="__span-3-25"><a id="__codelineno-3-25" name="__codelineno-3-25" href="#__codelineno-3-25"></a><span class="c1"># INTELMPI=yes for INTEL MPI</span>
</span><span id="__span-3-26"><a id="__codelineno-3-26" name="__codelineno-3-26" href="#__codelineno-3-26"></a><span class="nv">INTELMPI</span><span class="o">=</span>no
</span><span id="__span-3-27"><a id="__codelineno-3-27" name="__codelineno-3-27" href="#__codelineno-3-27"></a>
</span><span id="__span-3-28"><a id="__codelineno-3-28" name="__codelineno-3-28" href="#__codelineno-3-28"></a><span class="k">if</span><span class="w"> </span><span class="o">[</span><span class="w"> </span><span class="s2">"</span><span class="nv">$INTELMPI</span><span class="s2">"</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="s2">"yes"</span><span class="w"> </span><span class="o">]</span>
</span><span id="__span-3-29"><a id="__codelineno-3-29" name="__codelineno-3-29" href="#__codelineno-3-29"></a><span class="k">then</span>
</span><span id="__span-3-30"><a id="__codelineno-3-30" name="__codelineno-3-30" href="#__codelineno-3-30"></a><span class="w"> </span><span class="c1"># When using -mpi=intelmpi, KMP Affinity must be disabled</span>
</span><span id="__span-3-31"><a id="__codelineno-3-31" name="__codelineno-3-31" href="#__codelineno-3-31"></a><span class="w"> </span><span class="nb">export</span><span class="w"> </span><span class="nv">KMP_AFFINITY</span><span class="o">=</span>disabled
</span><span id="__span-3-32"><a id="__codelineno-3-32" name="__codelineno-3-32" href="#__codelineno-3-32"></a>
</span><span id="__span-3-33"><a id="__codelineno-3-33" name="__codelineno-3-33" href="#__codelineno-3-33"></a><span class="w"> </span><span class="c1"># INTELMPI is not aware about distribution of tasks.</span>
</span><span id="__span-3-34"><a id="__codelineno-3-34" name="__codelineno-3-34" href="#__codelineno-3-34"></a><span class="w"> </span><span class="c1"># - We need to define tasks distribution.</span>
</span><span id="__span-3-35"><a id="__codelineno-3-35" name="__codelineno-3-35" href="#__codelineno-3-35"></a><span class="w"> </span><span class="nv">HOSTLIST</span><span class="o">=</span><span class="k">$(</span>srun<span class="w"> </span>hostname<span class="w"> </span><span class="p">|</span><span class="w"> </span>sort<span class="w"> </span><span class="p">|</span><span class="w"> </span>uniq<span class="w"> </span>-c<span class="w"> </span><span class="p">|</span><span class="w"> </span>awk<span class="w"> </span><span class="s1">'{print $2 ":" $1}'</span><span class="w"> </span><span class="p">|</span><span class="w"> </span>tr<span class="w"> </span><span class="s1">'\n'</span><span class="w"> </span><span class="s1">':'</span><span class="w"> </span><span class="p">|</span><span class="w"> </span>sed<span class="w"> </span><span class="s1">'s/:$/\n/g'</span><span class="k">)</span>
</span><span id="__span-3-36"><a id="__codelineno-3-36" name="__codelineno-3-36" href="#__codelineno-3-36"></a><span class="w"> </span>mapdl<span class="w"> </span>-b<span class="w"> </span>-dis<span class="w"> </span>-mpi<span class="w"> </span>intelmpi<span class="w"> </span>-machines<span class="w"> </span><span class="nv">$HOSTLIST</span><span class="w"> </span>-np<span class="w"> </span><span class="si">${</span><span class="nv">SLURM_NTASKS</span><span class="si">}</span><span class="w"> </span>-i<span class="w"> </span><span class="s2">"</span><span class="nv">$SOLVER_FILE</span><span class="s2">"</span>
</span><span id="__span-3-37"><a id="__codelineno-3-37" name="__codelineno-3-37" href="#__codelineno-3-37"></a><span class="k">else</span>
</span><span id="__span-3-38"><a id="__codelineno-3-38" name="__codelineno-3-38" href="#__codelineno-3-38"></a><span class="w"> </span><span class="c1"># IBMMPI (default) will be aware of the distribution of tasks.</span>
</span><span id="__span-3-39"><a id="__codelineno-3-39" name="__codelineno-3-39" href="#__codelineno-3-39"></a><span class="w"> </span><span class="c1"># - In principle, no need to force tasks distribution</span>
</span><span id="__span-3-40"><a id="__codelineno-3-40" name="__codelineno-3-40" href="#__codelineno-3-40"></a><span class="w"> </span>mapdl<span class="w"> </span>-b<span class="w"> </span>-dis<span class="w"> </span>-mpi<span class="w"> </span>ibmmpi<span class="w"> </span>-np<span class="w"> </span><span class="si">${</span><span class="nv">SLURM_NTASKS</span><span class="si">}</span><span class="w"> </span>-i<span class="w"> </span><span class="s2">"</span><span class="nv">$SOLVER_FILE</span><span class="s2">"</span>
</span><span id="__span-3-41"><a id="__codelineno-3-41" name="__codelineno-3-41" href="#__codelineno-3-41"></a><span class="k">fi</span>
</span></code></pre></div>
<p>In the above example, one can increase the number of <em>nodes</em> and/or <em>ntasks</em> if
needed and combine it with <code>--exclusive</code> when necessary. In general, <strong>no
hypertheading</strong> is recommended for MPI based jobs. Also, one can combine it
with <code>--exclusive</code> when necessary.</p>
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