<div dir="ltr"><div>Hi Enzo,</div><div><br></div><div>As the website warns: "Note that the simulation requires about 82 GB of RAM, <b>so most likely you will need to use a cluster.</b>" As for the error, MPI is probably seeing only one node (your laptop) so requesting 16 is throwing an error.</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:12.8px">-Zach</div><div style="font-size:12.8px"><br></div><span style="font-size:12.8px">*     *     *</span><br style="font-size:12.8px"><span style="font-size:12.8px">Zachariah Etienne</span></div><div><span style="font-size:12.8px">Assoc. Prof. of Physics, U. of Idaho</span></div><div><span style="font-size:12.8px">Adjunct Assoc. Prof. of Physics & Astronomy, West Virginia U.</span></div><div dir="ltr"><div><a href="https://etienneresearch.com" target="_blank">https://etienneresearch.com</a></div><div><a href="https://blackholesathome.net/" target="_blank">https://blackholesathome.net</a><br></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 9, 2023 at 7:18 AM Enzo Iubini <<a href="mailto:egic.enzo@gmail.com">egic.enzo@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Greetings to all.<div><br></div><div>I've been having some problems running the GW150914 simulation. When following the tutorial on " <a href="https://einsteintoolkit.org/gallery/bbh/cr.html" target="_blank">https://einsteintoolkit.org/gallery/bbh/cr.html</a> " , I run into problems when running the parfile, specifically when running <br><br><pre style="box-sizing:border-box;overflow:auto;font-family:Menlo,Monaco,Consolas,"Courier New",monospace;font-size:13px;padding:9.5px;margin-top:0px;margin-bottom:10px;line-height:1.42857;color:rgb(51,51,51);word-break:break-all;background-color:rgb(245,245,245);border:1px solid rgb(204,204,204);border-radius:4px">simfactory/bin/sim create-submit GW150914_28 <span style="box-sizing:border-box;white-space:nowrap">--define N 28</span> <span style="box-sizing:border-box;white-space:nowrap">--parfile par/GW150914/GW150914.rpar</span> <span style="box-sizing:border-box;white-space:nowrap">--procs 128</span> <span style="box-sizing:border-box;white-space:nowrap">--walltime 24:00:00</span></pre><br></div><div>This leads to the error</div><div><div style="box-sizing:border-box;padding:0px;break-inside:avoid;display:flex;color:rgb(0,0,0);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"><div dir="auto" style="box-sizing:border-box;overflow-x:auto;padding:0.4em;line-height:1.21429em"><pre style="box-sizing:border-box;overflow:auto;font-size:inherit;padding:1px 0px;margin-top:0px;margin-bottom:0px;line-height:inherit;word-break:break-all;background-color:transparent;border:0px;border-radius:0px;white-space:pre-wrap;vertical-align:baseline">Parameter file: /home/enzo/Cactus/par/GW150914/GW150914.rpar
Skeleton Created
Job directory: "/home/enzo/simulations/GW150914_28"
Executable: "/home/enzo/Cactus/exe/cactus_sim"
Option list: "/home/enzo/simulations/GW150914_28/SIMFACTORY/cfg/OptionList"
Submit script: "/home/enzo/simulations/GW150914_28/SIMFACTORY/run/SubmitScript"
Run script: "/home/enzo/simulations/GW150914_28/SIMFACTORY/run/RunScript"
Parameter file: "/home/enzo/simulations/GW150914_28/SIMFACTORY/par/GW150914.rpar"
Assigned restart id: 0 </pre></div></div><div style="box-sizing:border-box;padding:0px;break-inside:avoid;display:flex;color:rgb(0,0,0);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"><div dir="auto" style="box-sizing:border-box;overflow-x:auto;padding:0.4em;line-height:1.21429em;background:rgb(255,221,221)"><pre style="box-sizing:border-box;overflow:auto;font-size:inherit;padding:1px 0px;margin-top:0px;margin-bottom:0px;line-height:inherit;word-break:break-all;background-color:transparent;border:0px;border-radius:0px;white-space:pre-wrap;vertical-align:baseline">Error: Too many nodes specified: nodes=16 (maxnodes is 1)
Aborting Simfactory.</pre></div></div></div><div><br></div><div>I am inclined to believe this is because I am running it on my own laptop, but I would nonetheless like to know exactly what does that error mean and if I can fix it somehow.<br><br>I would really appreciate your help, thank you :)<br><br>Best regards,<br>Enzo</div></div>
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