<html dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" id="owaParaStyle"></style>
</head>
<body fpstyle="1" ocsi="0">
<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hello!
<div><br>
</div>
<div>I am running into a problem when using petsc 3.1 and SuperLU.
<div><br>
</div>
<div>
<div>KSP Object:</div>
<div> type: preonly</div>
<div> maximum iterations=5000, initial guess is zero</div>
<div> tolerances: relative=1e-06, absolute=1e-50, divergence=10000</div>
<div> left preconditioning</div>
<div> using PRECONDITIONED norm type for convergence test</div>
<div>PC Object:</div>
<div> type: lu</div>
<div> LU: out-of-place factorization</div>
<div> tolerance for zero pivot 1e-12</div>
<div> matrix ordering: natural</div>
<div> factor fill ratio given 0, needed 0</div>
<div> Factored matrix follows:</div>
<div> Matrix Object:</div>
<div> type=mpiaij, rows=13608, cols=13608</div>
<div> package used to perform factorization: superlu_dist</div>
<div> total: nonzeros=0, allocated nonzeros=27216</div>
<div> SuperLU_DIST run parameters:</div>
<div> Process grid nprow 8 x npcol 8 </div>
<div> Equilibrate matrix TRUE </div>
<div> Matrix input mode 1 </div>
<div> Replace tiny pivots TRUE </div>
<div> Use iterative refinement FALSE </div>
<div> Processors in row 8 col partition 8 </div>
<div> Row permutation LargeDiag </div>
</div>
<div>
<div>[59]PETSC ERROR: --------------------- Error Message ------------------------------------</div>
<div>[60]PETSC ERROR: Petsc Release Version 3.1.0, Patch 5, Mon Sep 27 11:51:54 CDT 2010</div>
<div>[62]PETSC ERROR: [53]PETSC ERROR: Unknown column permutation!</div>
<div>See docs/changes/index.html for recent updates.</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>I googled around and found that a similar problem had been reported to the Petsc folks before. The answer was as follows:</div>
<div><br>
</div>
<div>
<div>On Wed, 15 Dec 2010, Satish Balay wrote:</div>
<div><br>
</div>
<div>> Can you try the attached patch - and see if this goes away?</div>
<div>> </div>
<div>> patch -Np1 < superlu_dist.patch</div>
<div>> </div>
</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Is the patch above included in the SLU that is part of the petsc 3.1 distribution? If not, could we get it?</div>
<div><br>
</div>
<div>Thanks so much in advance and best regards,</div>
<div>Gabriele</div>
</div>
</body>
</html>