<div dir="ltr"><div class="gmail_default" style="color:#000000"><div class="gmail_default">Hi Zach,</div><div class="gmail_default"><br></div><div class="gmail_default">I retried it on a workstation with fairly good configuration (80 threads, 256 GB RAM), where I ran test BNSM simulations. The problem remains the same. </div><div class="gmail_default"><font color="#000000"><br></font></div><div class="gmail_default"><font color="#000000">I cannot use more than 8 procs (num-threads 1) for this parfile. Otherwise, it says, '</font><span style="color:rgb(34,34,34)">grid structure consistency check failed</span>'. So, I guess this simulation is not demanding too much memory. But is there a better way to check how much memory is expected?</div><div style="color:rgb(34,34,34)"><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><br></div></div></div></div></div></div></div></div><div class="gmail_default">Secondly, I checked the error files from my old BNSM runs, those files also contain the following lines indicating Invalid MIT-MAGIC-COOKIE-1 key:</div><div class="gmail_default" style="color:rgb(34,34,34)"><font color="#a64d79"><br></font></div><div class="gmail_default" style="color:rgb(34,34,34)"><i><font size="1" color="#a64d79">+ mpirun --use-hwthread-cpus -np 10 /home/astro208/simulations/t1.4_had_1.4M/SIMFACTORY/exe/cactus_sim -L 3 /home/astro208/simulations/t1.4_had_1.4M/output-0000/t1.4_had_1.4M.par<br>Invalid MIT-MAGIC-COOKIE-1 key--------------------------------------------------------------------------<br>WARNING: No preset parameters were found for the device that Open MPI<br>detected:<br> Local host: astro<br> Device name: irdma0<br> Device vendor ID: 0x8086<br> Device vendor part ID: 14289<br>Default device parameters will be used, which may result in lower<br>performance. You can edit any of the files specified by the<br>btl_openib_device_param_files MCA parameter to set values for your<br>device.<br>NOTE: You can turn off this warning by setting the MCA parameter<br> btl_openib_warn_no_device_params_found to 0.<br>--------------------------------------------------------------------------<br>No OpenFabrics connection schemes reported that they were able to be<br>used on a specific port. As such, the openib BTL (OpenFabrics<br>support) will be disabled for this port.<br><br> Local host: astro<br> Local device: irdma1<br> Local port: 1<br> CPCs attempted: udcm<br>--------------------------------------------------------------------------<br>Open MPI failed an OFI Libfabric library call (fi_endpoint). This is highly<br>unusual; your job may behave unpredictably (and/or abort) after this.<br> Local host: astro<br> Location: mtl_ofi_component.c:629<br> Error: Unspecified error (256)<br>--------------------------------------------------------------------------</font></i><br></div><div class="gmail_default" style="color:rgb(34,34,34)"><i><font size="1" color="#a64d79"><br></font></i></div><div class="gmail_default" style="color:rgb(34,34,34)"><font color="#000000">These simulations ran successfully. Even though Invalid-MAGIC-COOKIE could be a separate issue, it may not be the source of this particular problem, but I could be totally wrong here. </font></div><div class="gmail_default" style="color:rgb(34,34,34)"><font color="#000000"><br></font></div><div class="gmail_default" style="color:rgb(34,34,34)"><font color="#000000">Please let me know your thoughts on this.</font></div><div class="gmail_default" style="color:rgb(34,34,34)"><font color="#000000"><br></font></div><div class="gmail_default" style="color:rgb(34,34,34)"><font color="#000000">Regards</font></div><div class="gmail_default" style="color:rgb(34,34,34)"><span style="color:rgb(102,102,102)">Shamim Haque</span><br></div><div style="color:rgb(34,34,34)"><div dir="ltr" class="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font color="#666666">Senior Research Fellow (SRF)<br></font><div><font color="#666666">Department of Physics</font></div><div><font color="#666666">IISER Bhopal</font></div></div></div></div></div></div></div></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><font color="#666666">Shamim Haque</font></div><div dir="ltr"><font color="#666666">Senior Research Fellow (SRF)<br></font><div><font color="#666666">Department of Physics</font></div><div><font color="#666666">IISER Bhopal</font></div></div></div></div></div></div></div></div></div></div><br></div><div hspace="streak-pt-mark" style="max-height:1px"><img alt="" style="width:0px;max-height:0px;overflow:hidden" src="https://mailfoogae.appspot.com/t?sender=ac2hhbWltc0BpaXNlcmIuYWMuaW4%3D&type=zerocontent&guid=047de247-5f3e-4e63-bd8f-482b15e5eb79"><font color="#ffffff" size="1">ᐧ</font></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 12, 2023 at 8:15 PM Zach Etienne <<a href="mailto:zachetie@gmail.com">zachetie@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">Hi Shamim,<div><br></div><div>Invalid MIT-MAGIC-COOKIE-1 key: This is related to X11 forwarding and authentication. The MIT-MAGIC-COOKIE-1 is an authentication scheme used by X11, the Linux windowing system. When you're trying to run a program that requires graphical output on a remote machine, the X11 system uses these "magic cookies" to authenticate the user. If there's a mismatch or the key is invalid, you will be denied permission.<br></div><div><br></div><div>We believe the segmentation fault is probably due to running a parameter file on a computer that doesn't have enough memory. The error file seemed to indicate running on a laptop.</div><div><br clear="all"><div><div dir="ltr" class="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 Thu, Oct 12, 2023 at 6:34 AM Shamim Haque 1910511 <<a href="mailto:shamims@iiserb.ac.in" target="_blank">shamims@iiserb.ac.in</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"><div class="gmail_default" style="color:rgb(0,0,0)">Hello all,</div><div class="gmail_default" style="color:rgb(0,0,0)"><br></div><div class="gmail_default" style="color:rgb(0,0,0)">I am trying to use the bbig.par parameter file to extract the metric and thermodynamic information for an isolated star ID from Lorene. This parfile is available in Meudon_Mag_NS/par folder.</div><div class="gmail_default" style="color:rgb(0,0,0)"><br></div><div class="gmail_default" style="color:rgb(0,0,0)">I tried this par file with the given Lorene ID. It is supposed to exit after iter 0 with IO outfiles. However, it does not give the requested outputs upon completion of the simulation. I can see the Lorene information is read correctly in the out file, but I am unable to find out the problem.</div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><font color="#666666"><br></font></div><div dir="ltr"><font color="#666666"><span class="gmail_default" style="color:rgb(0,0,0)">I need some help with this. I have attached the parfile, ID, outfile and error file for reference.</span></font></div><div dir="ltr"><font color="#666666"><br></font></div><div dir="ltr"><font color="#666666"><span class="gmail_default" style="color:rgb(0,0,0)">Regards</span></font></div><div dir="ltr"><font color="#666666">Shamim Haque</font></div><div dir="ltr"><font color="#666666">Senior Research Fellow (SRF)<br></font><div><font color="#666666">Department of Physics</font></div><div><font color="#666666">IISER Bhopal</font></div></div></div></div></div></div></div></div></div></div></div><div hspace="streak-pt-mark" style="max-height:1px"><img alt="" style="width: 0px; max-height: 0px; overflow: hidden;" src="https://mailfoogae.appspot.com/t?sender=ac2hhbWltc0BpaXNlcmIuYWMuaW4%3D&type=zerocontent&guid=bd2dce76-7e0b-4584-a6a6-2116994b9456"><font color="#ffffff" size="1">ᐧ</font></div>
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