[petsc-users] How rto use multigrid?

Jed Brown jedbrown at mcs.anl.gov
Thu Nov 1 09:00:28 CDT 2012

Yes, it's faster to understand this error message than to have
"mysteriously slow performance".

** Preallocation routines now automatically set
MAT_NEW_NONZERO_ALLOCATION_ERR, if you intentionally preallocate less than
necessary then use
error generation.

On Thu, Nov 1, 2012 at 8:57 AM, w_ang_temp <w_ang_temp at 163.com> wrote:

> Do you mean that the two versions have a different in this point? If I use
> the new version, I have to
> make some modifications on my codes?
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