[petsc-users] Copy X in ksp solver

[Longxiang Chen]

Dear all,

Running with ./ex23 -ksp_type cg, everything works well.
If running with mpi: mpiexec -n 4  ./ex23 -ksp_type cg
In /src/ksp/ksp/impls/cg/cg.c, when I try to make a copy of the solution
vector X by VecCopy(X, myX), the following error comes out.

[1]PETSC ERROR: --------------------- Error Message
------------------------------------
[1]PETSC ERROR: Object is in wrong state!
[1]PETSC ERROR: Not for unassembled vector!
[1]PETSC ERROR:
------------------------------------------------------------------------
[1]PETSC ERROR: Petsc Release Version 3.4.2, Jul, 02, 2013
[1]PETSC ERROR: See docs/changes/index.html for recent updates.
[1]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
[1]PETSC ERROR: See docs/index.html for manual pages.
[1]PETSC ERROR:
------------------------------------------------------------------------
[1]PETSC ERROR: ./ex23 on a ksp-intel named head.cluster by lchen Fri Aug
23 11:57:49 2013
[1]PETSC ERROR: Libraries linked from
/home/lchen/petsc-3.4.2/ftksp-intel/lib
[1]PETSC ERROR: Configure run at Mon Aug 19 18:32:17 2013
[1]PETSC ERROR: Configure options PETSC_ARCH=ksp-intel
--with-shared-libraries=0
--with-blas-lib=/opt/acml5.3.0/gfortran64/lib/libacml.a
--with-lapack-lib=/opt/acml5.3.0/gfortran64/lib/libacml.a
[1]PETSC ERROR:
------------------------------------------------------------------------
[1]PETSC ERROR: VecCopy() line 1686 in
/home/lchen/petsc-3.4.2/src/vec/vec/interface/vector.c

But VecCopy(myX, X) works.
Any problem with my copy?
Are there any methods to copy X to myX?
Thanks,

Longxiang
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