<div class="gmail_quote">On Tue, Nov 9, 2010 at 12:49, Tim Kroeger <span dir="ltr"><<a href="mailto:tim.kroeger@cevis.uni-bremen.de">tim.kroeger@cevis.uni-bremen.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div id=":3gl">Well, as you know, I'm using PETSc only via libMesh. Creating a standalone PETSc test case is non-trivial for me. But I'll keep to this and will either find out that I did something wrong or produce a test case for you.<br>
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It might be imporant to know that the original matrix is a ShellMatrix.</div></blockquote></div><br><div>Yes, this is important. Check the implementation of MatMultAdd for the Shell.</div><div><br></div><div>Jed</div>