<div class="gmail_extra">On Thu, Apr 26, 2012 at 9:33 AM, Dominik Szczerba <span dir="ltr"><<a href="mailto:dominik@itis.ethz.ch" target="_blank">dominik@itis.ethz.ch</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
> You can use -pc_type lu to test for a rank deficient preconditioning matrix.<br>
><br>
> Matt<br>
<br>
I get:<br>
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<br>
[0]PETSC ERROR: No support for this operation for this object type!<br>
[0]PETSC ERROR: Matrix format mpiaij does not have a built-in PETSc LU!</blockquote><div><br></div><div>What are you doing trying to debug something in parallel that has nothing to do with that?</div><div>Run in serial, on a small problem. Just messing around will not find the problem.</div>
<div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="HOEnZb"><font color="#888888"><br>
Dominik<br>
</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener<br>
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