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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">A quick & easy way to see what your options might be for Slurm environment variables is to try a job like this:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">$ srun --nodes 2 --ntasks-per-node 6 --pty env | grep SLURM<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Or, perhaps, use the “env | grep SLURM” in your batch script.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Andy<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> slurm-users [mailto:slurm-users-bounces@lists.schedmd.com]
<b>On Behalf Of </b>Brian Andrus<br>
<b>Sent:</b> Saturday, June 8, 2019 1:29 PM<br>
<b>To:</b> slurm-users@lists.schedmd.com<br>
<b>Subject:</b> Re: [slurm-users] Counting total number of cores specified in the sbatch file<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p>If you are using mpi, it should be aware automatically if everything was compiled with support (eg mpirun).<o:p></o:p></p>
<p>If you are looking to just get the total tasks, $SLURM_NTASKS is probably what you are looking for<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>Brian Andrus<o:p></o:p></p>
<p><o:p> </o:p></p>
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<p class="MsoNormal">On 6/8/2019 2:46 AM, Mahmood Naderan wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif">A genetic program uses -num_threads in command line for parallel run. I use the following directives in slurm batch file<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif">#SBATCH --ntasks-per-node=6<br>
#SBATCH --nodes=2<br>
#SBATCH --mem-per-cpu=2G<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif">for 12 processes and 24GB of memory. Is there any slurm variable that counts all threads from the directives? So, I can use<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif">-num_threads $SLURM_COUNT<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif">where SLURM_COUNT is 12. Any idea?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Tahoma",sans-serif">Regards,<br>
Mahmood</span><br>
<br>
<o:p></o:p></p>
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