Great, thanks! On Sun, 25 Sep 2022, 17:55 Barry Smith, <[email protected]> wrote:
> > Thanks for the bug report; your fix is correct. I have corrected it in > PETSc and also added support for multiple block per MPI rank in > https://gitlab.com/petsc/petsc/-/merge_requests/5678 > > Barry > > > > > ---------- Forwarded message ---------- > Date: Thu, 22 Sep 2022 02:31:37 +0300 > From: Abylay Zhumekenov <[email protected]> > To: [email protected] > Subject: [petsc-users] PCApplySymmetricRight for PCBJACOBI > > Hello, > > I have been playing around with a block Jacobi preconditioner (PCJACOBI) > with an incomplete Cholesky (PCICC) sub-preconditioner. Although you cannot > set KSPSetPCSide to PC_SYMMETRIC for PCBJACOBI, you still can do it for > PCICC. I was surprised to find that PCApplySymmetricLeft is properly > applied to a vector. However, PCApplySymmetricRight throws an error: > ... > [0]PETSC ERROR: Object is in wrong state > [0]PETSC ERROR: VecPlaceArray() was already called on this vector, > without a call to VecResetArray() > ... > [0]PETSC ERROR: #3 PCApplySymmetricLeft_BJacobi_Singleblock() at > /home/abylay/KAUST/Libraries/C/petsc/src/ksp/pc/impls/bjacobi/bjacobi.c:660 > [0]PETSC ERROR: #4 PCApplySymmetricLeft() at > /home/abylay/KAUST/Libraries/C/petsc/src/ksp/pc/interface/precon.c:532 > ... > The problem goes away if I add: > ... > PetscCall(VecResetArray(bjac->x)); > PetscCall(VecResetArray(bjac->y)); > ... > at line 698 in source file bjacobi.c. I don't know if it is a bug, and how > I should report it, just wanted let someone know if it is. > Thanks. > > Abylay Zhumekenov > > >
