It is likely the u vector that is not assembled not the u_abs; the complete error message has this information. If the monitor is called from TS then I cannot imagine how the u could possibly be unassembled. Please send the complete error message.
Barry > On Jan 17, 2019, at 1:18 PM, Sajid Ali via petsc-users > <petsc-users@mcs.anl.gov> wrote: > > Hi, > > I have the following 2 lines in a function in my code : > > ierr = VecDuplicate(u,&u_abs);CHKERRQ(ierr); > ierr = VecCopy(u,u_abs);CHKERRQ(ierr); > > The VecCopy fails with the error message : > [0]PETSC ERROR: Object is in wrong state > [0]PETSC ERROR: Not for unassembled vector > > adding the following statements doesn't help either : > ierr = VecAssemblyBegin(u_abs);CHKERRQ(ierr); > ierr = VecAssemblyEnd(u_abs);CHKERRQ(ierr); > > If needed, the entire file is at : > https://github.com/s-sajid-ali/xwp_petsc/blob/master/1d/free_space/ex_modify.c > > Thank You, > Sajid Ali > Applied Physics > Northwestern University
