Faillure when partitioning mesh with more body than CPU
Posted: Fri Mar 30, 2018 3:29 pm
Dear all,
Thanks to the Syrthes team for the code, I have used Syrthes 4.3 for the past few weeks and it is very fast and powerful.
I had an error when trying to run a case with more than one hundred bodies, the preprocessor function syrthes-pp call scotch or metis to do the partition (both gives the same result) and then crash with a segmentation fault when trying ligne 259 of pp_cree_tables.c after having done many iteration of the loops (from fast debugging by outputting stuff to the log).
I have tried different mesh (gmsh and netgen from Salome) for the same geometry.
The last log output before the segfault is
Could someone transmit to the Syrthes developers or tell me how to do the bug report?
Kinds regards
Jonas
Thanks to the Syrthes team for the code, I have used Syrthes 4.3 for the past few weeks and it is very fast and powerful.
I had an error when trying to run a case with more than one hundred bodies, the preprocessor function syrthes-pp call scotch or metis to do the partition (both gives the same result) and then crash with a segmentation fault when trying
Code: Select all
if (!(p->suivant)) /* le noeud n'appartient qu'a 1 seule part */
I have tried different mesh (gmsh and netgen from Salome) for the same geometry.
The last log output before the segfault is
The function syrthes-pp was working before that. I think that the error comes from that there is much more bodies in my case than in the previous simulation.*** CREE_TABLES_PARALL : creation of temporary tables for parallel execution
Elements number per partition :
- Partition 0 : 513933
- Partition 1 : 514106
- Partition 2 : 508252
- Partition 3 : 515982
- Partition 4 : 511368
- Partition 5 : 509011
- Partition 6 : 511722
- Partition 7 : 511787
- Partition 8 : 513892
- Partition 9 : 511538
- Partition 10 : 514106
- Partition 11 : 512832
- Partition 12 : 510913
- Partition 13 : 507989
- Partition 14 : 515242
- Partition 15 : 517624
- Partition 16 : 516295
- Partition 17 : 518181
- Partition 18 : 509486
- Partition 19 : 518130
Maximun number of elements per partition : 518181
Could someone transmit to the Syrthes developers or tell me how to do the bug report?
Kinds regards
Jonas