<div dir="ltr"><div>Thanks for getting back to me. Gmsh partitions fine with metis or the plugin with smaller mesh sample. I ran gmsh with the -part_no_topo option and it still seg faulted. I am running on a cloud machine with over 400GB of RAM. I even tried over 3TB of RAM and still seg faults. Also tried ulimit -s unlimited<br></div><div><br></div><div>OUTPUT FOR METIS<br></div><div>joe@cmsmeshing2:~/bigdrive$ ulimit -s unlimited<br>joe@cmsmeshing2:~/bigdrive$ ulimit -c unlimited<br>joe@cmsmeshing2:~/bigdrive$ sudo sysctl -w kernel.core_pattern=/tmp/core-%e.%p.%h.%t<br>kernel.core_pattern = /tmp/core-%e.%p.%h.%t<br>joe@cmsmeshing2:~/bigdrive$ ./gmsh -merge model3dbin.msh modelpart.geo -part_no_topo<br>Info : Running './gmsh -merge model3dbin.msh modelpart.geo -part_no_topo' [Gmsh 4.4.1, 1 node, max. 1 thread]<br>Info : Started on Thu Aug 1 06:42:54 2019<br>Info : Reading 'model3dbin.msh'...<br>Info : 166593827 nodes<br>Info : 1030066524 elements <br>Info : Done reading 'model3dbin.msh' <br>Info : Reading 'modelpart.geo'...<br>Info : Partitioning mesh...<br>Segmentation fault (core dumped)</div><div><br></div><div>OUTPUT FOR PLUGIN SIMPLEPARTITION</div><div>joe@cmsmeshing2:~/bigdrive$ ulimit -s unlimited<br>joe@cmsmeshing2:~/bigdrive$ ulimit -c unlimited<br>joe@cmsmeshing2:~/bigdrive$ sudo sysctl -w kernel.core_pattern=/tmp/core-%e.%p.%h.%t<br>kernel.core_pattern = /tmp/core-%e.%p.%h.%t<br>joe@cmsmeshing2:~/bigdrive$ ./gmsh -merge model3dbin.msh -part_no_topo modelpart2.geo<br>Info : Running './gmsh -merge model3dbin.msh -part_no_topo modelpart2.geo' [Gmsh 4.4.1, 1 node, max. 1 thread]<br>Info : Started on Thu Aug 1 07:04:30 2019<br>Info : Reading 'model3dbin.msh'...<br>Info : 166593827 nodes<br>Info : 1030066524 elements <br>Info : Done reading 'model3dbin.msh' <br>Info : Reading 'modelpart2.geo'...<br>Info : Running Plugin(SimplePartition)...<br>Segmentation fault (core dumped)</div><div><br></div><div>core dumps are large files and I am uploading them now to attach to next email. I don't have too much confidence that I did the core dump correctly, hopefully it is correct and helpful.</div><div><br></div><div><div><div><div dir="ltr" class="m_5155666698629940126m_-6159807552319875227gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:12.8px">Regards,</div><span style="font-size:12.8px">Joe Schickler</span><div style="font-size:12.8px"><br></div><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 1, 2019 at 2:07 AM Christophe Geuzaine <<a href="mailto:cgeuzaine@uliege.be" target="_blank">cgeuzaine@uliege.be</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"><br>
<br>
> On 31 Jul 2019, at 16:37, Joe Schickler <<a href="mailto:joeschickler.jjtech@gmail.com" target="_blank">joeschickler.jjtech@gmail.com</a>> wrote:<br>
> <br>
> Hello all,<br>
> <br>
> I am getting segmentation faults in gmsh 4.4.1 (and other versions) when I try to partition a mesh with<br>
> Info : 166593827 nodes<br>
> Info : 1030066524 elements <br>
> <br>
> The seg fault happens when I use metis and when I use the Plugin SimplePartition<br>
> <br>
> Attached is copy of geo file. Command I use at terminal is <br>
> ./gmsh -merge model3dbin.msh modelpart.geo -bin -save<br>
> <br>
<br>
Does it happen on smaller meshes? Does it happen if you specify "-part_no_topo"? Can you run Gmsh inside a debugger and send us the backtrace?<br>
<br>
Christophe<br>
<br>
> Regards,<br>
> Joe Schickler<br>
> J&J Technologies LLC<br>
> Stratford, NJ 08084<br>
> Tel: (856) 437-0401<br>
> Email: <a href="mailto:JoeSchickler.JJTech@gmail.com" target="_blank">JoeSchickler.JJTech@gmail.com</a><br>
> <br>
> <modelpart.geo>_______________________________________________<br>
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<br>
— <br>
Prof. Christophe Geuzaine<br>
University of Liege, Electrical Engineering and Computer Science <br>
<a href="http://www.montefiore.ulg.ac.be/~geuzaine" rel="noreferrer" target="_blank">http://www.montefiore.ulg.ac.be/~geuzaine</a><br>
<br>
<br>
<br>
</blockquote></div>