[petsc-users] Error with MatSchurComplement

[Bhalla, Amneet Pal S]

Hi Folks,

I am getting error with odd number of processors with PCFIELDSPLIT. The error log is attached. Any hints where to start digging?


+++++++++++++++++++++++++++++++++++++++++++++++++++
At beginning of timestep # 0
Simulation time is 0
    Residual norms for ib_ solve.
    0 KSP unpreconditioned resid norm 5.093934451651e+05 true resid norm 5.093934451651e+05 ||r(i)||/||b|| 1.000000000000e+00
[2]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[2]PETSC ERROR: Nonconforming object sizes
[2]PETSC ERROR: Local columns of A10 1072 do not equal local rows of A00 1104
[2]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
[2]PETSC ERROR: Petsc Release Version 3.6.1, unknown
[2]PETSC ERROR: ./main2d on a darwin-dbg named Amneets-MBP.attlocal.net<http://Amneets-MBP.attlocal.net> by Taylor Tue Feb 16 20:30:45 2016
[2]PETSC ERROR: Configure options --CC=mpicc --CXX=mpicxx --FC=mpif90 --PETSC_ARCH=darwin-dbg --with-debugging=1 --with-c++-support=1 --with-hypre=1 --download-hypre=1 --with-hdf5=yes --with-hdf5-dir=/Users/Taylor/Documents/SOFTWARES/HDF5/
[2]PETSC ERROR: #1 MatSchurComplementSetSubMatrices() line 261 in /Users/Taylor/Documents/SOFTWARES/PETSc-BitBucket/PETSc/src/ksp/ksp/utils/schurm.c
[2]PETSC ERROR: #2 PCSetUp_FieldSplit() line 714 in /Users/Taylor/Documents/SOFTWARES/PETSc-BitBucket/PETSc/src/ksp/pc/impls/fieldsplit/fieldsplit.c
[2]PETSC ERROR: #3 PCSetUp() line 983 in /Users/Taylor/Documents/SOFTWARES/PETSc-BitBucket/PETSc/src/ksp/pc/interface/precon.c
[2]PETSC ERROR: #4 KSPSetUp() line 332 in /Users/Taylor/Documents/SOFTWARES/PETSc-BitBucket/PETSc/src/ksp/ksp/interface/itfunc.c
[2]PETSC ERROR: #5 KSPSolve() line 546 in /Users/Taylor/Documents/SOFTWARES/PETSc-BitBucket/PETSc/src/ksp/ksp/interface/itfunc.c
[2]PETSC ERROR: #6 solveSystem() line 229 in ../../../IBAMR/ibtk/lib/../src/solvers/impls/PETScLevelSolver.cpp
P=00002:Program abort called in file ``../../../IBAMR/ibtk/lib/../src/solvers/impls/PETScLevelSolver.cpp'' at line 229
P=00002:ERROR MESSAGE:
P=00002:
application called MPI_Abort(MPI_COMM_WORLD, -1) - process 2
*** Warning, AutoPtr is deprecated and will be removed in a future library version! ./include/libmesh/auto_ptr.h, line 271, compiled Feb  3 2016 at 10:29:17 ***


— Amneet


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