snes

sf1409@doodson:~/src/testfieldsplit$ gdb --args python tfs.py 
GNU gdb (GDB) 7.6.1-ubuntu
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This GDB was configured as "x86_64-linux-gnu".
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<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/python2.7...(no debugging symbols found)...done.
(gdb) run 
Starting program: /usr/bin/python tfs.py
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Passing options to PETSc: -sw_snes_monitor -sw_snes_view -sw_ksp_converged_reason -sw_ksp_type fgmres -sw_ksp_monitor -sw_pc_type fieldsplit -sw_pc_fieldsplit_type schur -sw_pc_fieldsplit_schur_factorization_type full -sw_pc_fieldsplit_schur_precondition self -sw_fieldsplit_0_ksp_type preonly -sw_fieldsplit_0_pc_type lu -sw_fieldsplit_0_pc_factor_mat_solver_package mumps -sw_fieldsplit_1_ksp_converged_reason -sw_fieldsplit_1_ksp_type gmres -sw_fieldsplit_1_ksp_atol 1.0e-23 -sw_fieldsplit_1_ksp_monitor_true_residual -sw_fieldsplit_1_pc_type gamg -mat_mumps_icntl_14 50
SNES Object:(sw_) 1 MPI processes
  type: newtonls
  SNES has not been set up so information may be incomplete
  maximum iterations=10, maximum function evaluations=2000
  tolerances: relative=1e-09, absolute=1e-10, solution=1e-16
  total number of linear solver iterations=0
  total number of function evaluations=0
  SNESLineSearch Object:  (sw_)   1 MPI processes
    type: basic
    maxstep=1.000000e+08, minlambda=1.000000e-12
    tolerances: relative=1.000000e-08, absolute=1.000000e-15, lambda=1.000000e-08
    maximum iterations=1
  KSP Object:  (sw_)   1 MPI processes
    type: fgmres
      GMRES: restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement
      GMRES: happy breakdown tolerance 1e-30
    maximum iterations=10000, initial guess is zero
    tolerances:  relative=1e-05, absolute=1e-50, divergence=10000
    left preconditioning
    using DEFAULT norm type for convergence test
  PC Object:  (sw_)   1 MPI processes
    type: fieldsplit
    PC has not been set up so information may be incomplete
      FieldSplit with Schur preconditioner, factorization FULL
      Preconditioner for the Schur complement formed from S itself
      Split info:
      Split number 0 Defined by IS
      Split number 1 Defined by IS
      KSP solver for A00 block 
        KSP Object:        (sw_fieldsplit_0_)         1 MPI processes
          type: preonly
          maximum iterations=10000, initial guess is zero
          tolerances:  relative=1e-05, absolute=1e-50, divergence=10000
          left preconditioning
          using DEFAULT norm type for convergence test
        PC Object:        (sw_fieldsplit_0_)         1 MPI processes
          type not yet set
          PC has not been set up so information may be incomplete
      KSP solver for upper A00 in upper triangular factor 
        KSP Object:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff092947b in PetscObjectPrintClassNamePrefixType () from /usr/lib/petscdir/3.4.2/linux-gnu-c-opt/lib/libpetsc.so.3.4.2
(gdb) bt
#0  0x00007ffff092947b in PetscObjectPrintClassNamePrefixType () from /usr/lib/petscdir/3.4.2/linux-gnu-c-opt/lib/libpetsc.so.3.4.2
#1  0x00007ffff0715e4e in KSPView () from /usr/lib/petscdir/3.4.2/linux-gnu-c-opt/lib/libpetsc.so.3.4.2
#2  0x00007ffff0667486 in ?? () from /usr/lib/petscdir/3.4.2/linux-gnu-c-opt/lib/libpetsc.so.3.4.2
#3  0x00007ffff092c3b7 in PCView () from /usr/lib/petscdir/3.4.2/linux-gnu-c-opt/lib/libpetsc.so.3.4.2
#4  0x00007ffff0716aaa in KSPView () from /usr/lib/petscdir/3.4.2/linux-gnu-c-opt/lib/libpetsc.so.3.4.2
#5  0x00007ffff09e5a75 in SNESView () from /usr/lib/petscdir/3.4.2/linux-gnu-c-opt/lib/libpetsc.so.3.4.2
#6  0x00007ffff1d7812b in dolfin::PETScSNESSolver::init (this=this@entry=0x235bef0, nonlinear_problem=..., x=...) at /home/sf1409/src/dolfin_pefarrell/dolfin/nls/PETScSNESSolver.cpp:380
#7  0x00007fffcfde93b0 in _wrap_PETScSNESSolver_init (args=<optimized out>) at /home/sf1409/src/dolfin_pefarrell/build.pefarrell.snes-pass-fieldsplit-is/dolfin/swig/modules/la/modulePYTHON_wrap.cxx:40014
#8  0x000000000053473a in PyEval_EvalFrameEx ()
#9  0x0000000000567cdc in PyEval_EvalCode ()
#10 0x0000000000451adb in ?? ()
#11 0x0000000000451e5b in PyRun_FileExFlags ()
#12 0x0000000000452394 in PyRun_SimpleFileExFlags ()
#13 0x0000000000453ead in Py_Main ()
#14 0x00007ffff7816de5 in __libc_start_main (main=0x453f6b <main>, argc=2, ubp_av=0x7fffffffde58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffde48) at libc-start.c:260
#15 0x00000000005786be in _start ()