[petsc-users] MatAssemblyBegin does not return.

Matthew Knepley knepley at gmail.com
Wed Apr 27 17:29:29 CDT 2016

On Wed, Apr 27, 2016 at 5:27 PM, Seungbum Koo <doougsini at gmail.com> wrote:

> Is there anyone who is experiencing the same problem as mine?
> My code worked fine with PETSc-3.4.5 but the same code does not work after
> upgrading to 3.6.3. Call to MatAssemblyBegin does not return.I waited 10+
> hours and quit it. It used to return within a minute with 3.4.5. When I
> downgrade to 3.4.5, everything works fine again.

Can you run in the debugger and get a stack trace, so that we can see where
it might be hanging? We have not
had any other reports of this, and 3.6 has been out for a year.



> Is there anyone had the same problem and resolved?
> Thanks in advance.
> Seungbum

What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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