<div dir="ltr">Greg, I am forwarding this to the PETSc mailing list. <div><br></div><div>Please send the entire output from this run. As I recall you were getting a message that all values were not the same on all processors in GMRES. I have seen this when I get NaNs in the system.<div><br></div><div>While you are doing this you should use a simple solver like change:</div><div><br></div><div><pre class="">-pressure_pc_type gamg</pre><pre class="">to</pre><pre class=""><pre class="">-pressure_pc_type jacobi</pre></pre></div><div><div><br></div><div>And add:</div><div><br></div><div><b style="color:rgb(0,0,0);font-family:Times;font-size:medium">-</b>pressure_<b style="color:rgb(0,0,0);font-family:Times;font-size:medium">ksp_monitor_true_residual</b></div><div><div><br></div><div>Mark<br><div><br></div><div><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Greg Miller</b> <span dir="ltr"><<a href="mailto:grgmiller@ucdavis.edu">grgmiller@ucdavis.edu</a>></span><br>Date: Mon, Jul 13, 2015 at 2:08 PM<br>Subject: same petsc problem<br>To: Mark Adams <<a href="mailto:mfadams@lbl.gov">mfadams@lbl.gov</a>><br>Cc: David Trebotich <<a href="mailto:treb@hpcrd.lbl.gov">treb@hpcrd.lbl.gov</a>><br><br><br>Hi Mark. I'm still stuck on the same petsc problem. Would you please try the attached minimal example and advise me?<br>
<br>
I'm running this without MPI:<br>
make DIM=2 DEBUG=TRUE MPI=FALSE USE_PETSC=TRUE test<br>
<br>
There is no input file.<br>
<br>
Thank you,<br>
Greg<br>
<span class=""><font color="#888888"><br>
--<br>
Greg Miller<br>
Department of Chemical Engineering and Materials Science<br>
University of California, Davis<br>
One Shields Avenue<br>
Davis, CA 95616<br>
<a href="mailto:grgmiller@ucdavis.edu">grgmiller@ucdavis.edu</a><br>
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