<div dir="ltr">Oh, SOR probably grabs the iteration ...<div><br></div><div>Never mind.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Dec 19, 2014 at 10:20 AM, Mark Adams <span dir="ltr"><<a href="mailto:mfadams@lbl.gov" target="_blank">mfadams@lbl.gov</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Richardson damping factor does not seem to do anything. I set it to zero and the solve was fine.</div><div><br></div><div>Am I missing something?</div><div><br></div><div>Thanks,</div><div>Mark</div><div><br></div><div> Down solver (pre-smoother) on level 3 -------------------------------</div><div> KSP Object: (mg_levels_3_) 1024 MPI processes</div><div> type: richardson</div><div> Richardson: damping factor=0</div><div> maximum iterations=4</div><div> tolerances: relative=1e-05, absolute=1e-50, divergence=10000</div><div> left preconditioning</div><div> using nonzero initial guess</div><div> using NONE norm type for convergence test</div><div> PC Object: (mg_levels_3_) 1024 MPI processes</div><div> type: sor</div><div> SOR: type = local_symmetric, iterations = 1, local iterations = 1, omega = 1</div><div> linear system matrix followed by preconditioner matrix:</div><div> Mat Object: 1024 MPI processes</div><div> type: shell</div><div> rows=33427584, cols=33427584</div><div> Mat Object: 1024 MPI processes</div><div> type: mpiaij</div><div> rows=33427584, cols=33427584</div><div> total: nonzeros=1.7272e+09, allocated nonzeros=3.4544e+09</div><div> total number of mallocs used during MatSetValues calls =0</div><div> not using I-node (on process 0) routines</div><div><br></div></div>
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