On Thu, 15 Apr 2010 21:17:19 +0800, "=?gb2312?B?s8LA1sa9?=" <chenleping at yahoo.cn> wrote: > petsc teams, > > for following definitions: > > double precision u(n) > Vec v > > then, how can I actualize mutual updating between u(n) and v?
I'm not sure what you mean, if these are the same quantity then they shouldn't be stored in separate locations. See VecGetArray: http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/Vec/VecGetArray.html Jed
