[petsc-users] Must call MatXXXSetPreallocation() or MatSetUp() on argument 1 "mat" before MatGetFactorAvailable()

[Hong]

Mehrzad :
The error occurs at MatCreateNormal(A,&N), a function rarely used and not
well tested. We will fix it.

Do you need this function?

Hong

Hello everyone,
>
> I'm really new to Petsc and when I try to run
> ksp/ksp/examples/tutorials/ex27
>
> I get this error
>
> [0]PETSC ERROR: Object is in wrong state
> [0]PETSC ERROR: Must call MatXXXSetPreallocation() or MatSetUp() on
> argument 1 "mat" before MatGetFactorAvailable()
> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
> for trouble shooting.
> [0]PETSC ERROR: Petsc Release Version 3.6.0, unknown
> [0]PETSC ERROR: ./ex27 on a arch-linux2-cxx-debug named scourge by
> mehrzads Wed Jul 15 11:27:48 2015
> [0]PETSC ERROR: Configure options --with-mpi=1 --prefix=/opt/petsc
> --with-clanguage=cxx
> [0]PETSC ERROR: #1 MatGetFactorAvailable() line 4199 in /../matrix.c
> [0]PETSC ERROR: #2 PCGetDefaultType_Private() line 27 in /../precon.c
> [0]PETSC ERROR: #3 PCSetFromOptions() line 159 in /../pcset.c
> [0]PETSC ERROR: #4 KSPSetFromOptions() line 358 in /../itcl.c
>
>
> Can you help me identify the problem?
>
> Best,
> Mehrzad
>
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