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
OUTPUT FOR METIS joe@cmsmeshing2:~/bigdrive$ ulimit -s unlimited joe@cmsmeshing2:~/bigdrive$ ulimit -c unlimited joe@cmsmeshing2:~/bigdrive$ sudo sysctl -w kernel.core_pattern=/tmp/core-%e.%p.%h.%t kernel.core_pattern = /tmp/core-%e.%p.%h.%t joe@cmsmeshing2:~/bigdrive$ ./gmsh -merge model3dbin.msh modelpart.geo -part_no_topo Info : Running './gmsh -merge model3dbin.msh modelpart.geo -part_no_topo' [Gmsh 4.4.1, 1 node, max. 1 thread] Info : Started on Thu Aug 1 06:42:54 2019 Info : Reading 'model3dbin.msh'... Info : 166593827 nodes Info : 1030066524 elements Info : Done reading 'model3dbin.msh' Info : Reading 'modelpart.geo'... Info : Partitioning mesh... Segmentation fault (core dumped) OUTPUT FOR PLUGIN SIMPLEPARTITION joe@cmsmeshing2:~/bigdrive$ ulimit -s unlimited joe@cmsmeshing2:~/bigdrive$ ulimit -c unlimited joe@cmsmeshing2:~/bigdrive$ sudo sysctl -w kernel.core_pattern=/tmp/core-%e.%p.%h.%t kernel.core_pattern = /tmp/core-%e.%p.%h.%t joe@cmsmeshing2:~/bigdrive$ ./gmsh -merge model3dbin.msh -part_no_topo modelpart2.geo Info : Running './gmsh -merge model3dbin.msh -part_no_topo modelpart2.geo' [Gmsh 4.4.1, 1 node, max. 1 thread] Info : Started on Thu Aug 1 07:04:30 2019 Info : Reading 'model3dbin.msh'... Info : 166593827 nodes Info : 1030066524 elements Info : Done reading 'model3dbin.msh' Info : Reading 'modelpart2.geo'... Info : Running Plugin(SimplePartition)... Segmentation fault (core dumped) 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. Regards, Joe Schickler On Thu, Aug 1, 2019 at 2:07 AM Christophe Geuzaine <[email protected]> wrote: > > > > On 31 Jul 2019, at 16:37, Joe Schickler <[email protected]> > wrote: > > > > Hello all, > > > > I am getting segmentation faults in gmsh 4.4.1 (and other versions) when > I try to partition a mesh with > > Info : 166593827 nodes > > Info : 1030066524 elements > > > > The seg fault happens when I use metis and when I use the Plugin > SimplePartition > > > > Attached is copy of geo file. Command I use at terminal is > > ./gmsh -merge model3dbin.msh modelpart.geo -bin -save > > > > 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? > > Christophe > > > Regards, > > Joe Schickler > > J&J Technologies LLC > > Stratford, NJ 08084 > > Tel: (856) 437-0401 > > Email: [email protected] > > > > <modelpart.geo>_______________________________________________ > > gmsh mailing list > > [email protected] > > http://onelab.info/mailman/listinfo/gmsh > > — > Prof. Christophe Geuzaine > University of Liege, Electrical Engineering and Computer Science > http://www.montefiore.ulg.ac.be/~geuzaine > > > >
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