On Thu, May 24, 2012 at 2:14 PM, Abdul Hanan Sheikh <hanangul12 at yahoo.co.uk>wrote:
> Dear all, > I am quit beginner in PETSc. > I wrote a code for multigrid Vcycle (as preconditioer) by following the > instructions on manual page. > I want to see how much memory a Vcycle allocates by default in terms of > number of matrices and vectors. > I made a try to see by comparing with jacobi preconditioner, which surely > allocates 1 vector ONLY. > It turns out that a VCycle for FIVE (5) levels including coarsest level > allocates memory for 53 vectors and > subsequently it destroys too. > Some of those vectors are very small due to being on the coarse level. There are also the vectors used by the outer Krylov method. > > Is it normal ?? > > > Thanks in advance, > Abdul > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120524/00c486ad/attachment.html>
