<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Thu, Jan 23, 2014 at 5:35 AM, Garth N. Wells <span dir="ltr"><<a href="mailto:gnw20@cam.ac.uk" target="_blank">gnw20@cam.ac.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Is there are command line option to set the number of iterations used for the eigenvalue estimation inside the Chebyshev preconditioner? "-gamg_est_ksp_max_it" does the trick with GAMG, but I'd also like to change the number of iterations when using Chebyshev smoothing with ML.</blockquote>
<div><br></div><div>In GAMG, we use PETSc itself to do the estimate, and give it the prefix gamg_est_. In ML, as far as I can see from the code, we use the internal</div><div>estimator, and I don't think they give us this knob.</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>
Garth<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
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