On Mon, Dec 26, 2011 at 12:37 AM, behzad baghapour <span dir="ltr"><<a href="mailto:behzad.baghapour@gmail.com">behzad.baghapour@gmail.com</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">
Dear all,<br><br>I used "-snes_ksp_ew_conv" to inexactly solve the linear system with Petsc prescribed forcing term BUT I didn't catch any difference or improvement. I just screen out the "rtol" of KSP during<br>
SNES iteration and found out It is constant (1e-5) in both exact and inexact cases. Please let me know how I should implement "inexact" method in SNES and what is the relation between KSP tolerances and inexact setup?<br>
</blockquote><div><br></div><div>-snes_view will tell you if it is being used, and the option is wrong</div><div><br></div><div> <a href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/SNES/SNESKSPSetUseEW.html">http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/SNES/SNESKSPSetUseEW.html</a></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">Merry Xmas,<br>BehZad<br>
</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>