On 05/06/2013 16:56, Roy Stogner wrote: > > On Wed, 5 Jun 2013, Matteo Semplice wrote: > >> matteo@montebianco:~/ufficio/Ricerca/popolazioni$ ./planctonstd-opt > ... >> [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, > ... > > If you're seeing a segfault, the first thing you should do is switch > from opt to debug mode. Then typically you'll fail an informative > assertion before you ever get to the segfault point, and even in the > worst case at least you can start things up in a debugger and have > more context to step through. > --- > Roy > Hi, I am afraid I don't seem to hit any assertion failure... The backtrace at the bottom of my email was obtained with the program compiled in debug mode. Anyway, here it is again. But perhaps I should change my question to "what is the proper way to change the quadrature rule in a FEMSystem?"
Matteo matteo@montebianco:~/ufficio/Ricerca/popolazioni$ gdb ./planctonstd-dbg GNU gdb (GDB) 7.0.1-debian Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /home/matteo/ufficio/Ricerca/popolazioni/planctonstd-dbg...done. (gdb) run Starting program: /home/matteo/ufficio/Ricerca/popolazioni/planctonstd-dbg [Thread debugging using libthread_db enabled] Running /home/matteo/ufficio/Ricerca/popolazioni/planctonstd-dbg Refined initial mesh 8 times Side Boundary conditions: ------------------------- (ID, number of sides) (0, 1) (1, 1) hmax is 0.00390625 hmed is 0.00390625 hmin is 0.00390625 Homogeneous coexistence equilibrium is (5.47143, 10.1429, 5.29082) eq_sys initialized time_solver initialized set options of diff_solver EquationSystems n_systems()=1 System #0, "Plancton" Type "Implicit" Variables="p1" "p2" "p3" Finite Element Types="LAGRANGE" "LAGRANGE" "LAGRANGE" Approximation Orders="FIRST" "FIRST" "FIRST" n_dofs()=771 n_local_dofs()=771 n_constrained_dofs()=0 n_vectors()=2 DofMap Sparsity Average On-Processor Bandwidth <= 8.97665 Average Off-Processor Bandwidth <= 0 Maximum On-Processor Bandwidth <= 9 Maximum Off-Processor Bandwidth <= 0 DofMap Constraints Number of DoF Constraints = 0 *** Warning, This code is untested, experimental, or likely to see future API changes: /home/matteo/libmesh-0.7.2/libmesh/include/mesh/vtk_io.h, line 153, compiled Jun 6 2013 at 16:57:15 *** ######## Solving time step 0, time= 0 Program received signal SIGSEGV, Segmentation fault. 0x08129372 in ?? () (gdb) bt #0 0x08129372 in ?? () #1 0xb7bada8b in libMesh::FEMContext::elem_fe_reinit (this=0x8129ba8) at src/systems/fem_context.C:575 #2 0xb7bb4146 in operator() (this=0xbfffec3c, range=...) at src/systems/fem_system.C:75 #3 0xb7bba2db in parallel_for<libMesh::StoredRange<libMesh::MeshBase::const_element_iterator, const libMesh::Elem*>, <unnamed>::AssemblyContributions> (range=..., body=...) at /home/matteo/libmesh-0.7.2/libmesh/include/parallel/threads.h:278 #4 0xb7bb65f3 in libMesh::FEMSystem::assembly (this=0x81546c8, get_residual=true, get_jacobian=true) at src/systems/fem_system.C:594 #5 0xb7b6b046 in libMesh::NewtonSolver::solve (this=0x81612f8) at src/solvers/newton_solver.C:301 #6 0xb7b7ffb6 in libMesh::UnsteadySolver::solve (this=0x8161170) at src/solvers/unsteady_solver.C:76 #7 0xb7b92e7d in libMesh::DifferentiableSystem::solve (this=0x81546c8) at src/systems/diff_system.C:118 #8 0xb7bb69c7 in libMesh::FEMSystem::solve (this=0x81546c8) at src/systems/fem_system.C:637 #9 0x0806f495 in main (argc=1, argv=0xbffff3b4) at plancton.cpp:203 -- Matteo Semplice Dip. di Matematica Phone: 011-6702831 Università degli Studi di Torino Skype: matteosemplice Via Carlo Alberto, 10 - Torino ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
