<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Are there any built in routines for freezing variables in SNES, or will that need to be handled by hand.</div><div class=""><br class=""></div><div class="">Also, I remain curious about the starting guess that the grid sequence uses during each refinement. Is there a way to dump those to disk for inspection?</div><br class=""><div class="">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; ">-gideon</span>
</div>
<br class=""><div><blockquote type="cite" class=""><div class="">On Sep 11, 2015, at 4:05 PM, Matthew Knepley <<a href="mailto:knepley@gmail.com" class="">knepley@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div class="gmail_extra"><div class="gmail_quote">On Fri, Sep 11, 2015 at 1:05 PM, Gideon Simpson<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:gideon.simpson@gmail.com" target="_blank" class="">gideon.simpson@gmail.com</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class="">Since the problem has not only the two components in the DM, but the second component has 4 degrees of freedom per mesh point, I thought it best to do the post processing separately. See attached</div></blockquote><div class=""><br class=""></div><div class="">So the whole thing is being controlled by 1 variable.</div><div class=""><br class=""></div><div class="">We should try freezing everything else, and just solving that scalar equation I guess.</div><div class=""><br class=""></div><div class=""> Matt</div><div class=""> </div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class=""><div class=""><div class=""><span style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class="">-gideon</span></div><span id="cid:BF4790E3-D677-4C00-8F31-13D1D0831207@princeton.org"><Screen Shot 2015-09-11 at 2.04.25 PM.png></span><br class=""><div class=""><blockquote type="cite" class=""><div class="">On Sep 11, 2015, at 10:16 AM, Matthew Knepley <<a href="mailto:knepley@gmail.com" target="_blank" class="">knepley@gmail.com</a>> wrote:</div><br class=""><div class=""><div dir="ltr" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class=""><div class="gmail_extra"><div class="gmail_quote">On Fri, Sep 11, 2015 at 9:08 AM, Gideon Simpson<span class=""> </span><span dir="ltr" class=""><<a href="mailto:gideon.simpson@gmail.com" target="_blank" class="">gideon.simpson@gmail.com</a>></span><span class=""> </span>wrote:<br class=""><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class="">Following up on the previous thread, for my dm composite problem, I find that at the end of the first grid sequence,where it fails to converge, the distribution of the norms between the two pieces are:<div class=""><br class=""></div><div class=""><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 39 SNES Function norm 2.253098577796e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 40 SNES Function norm 2.253098577331e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 41 SNES Function norm 2.253098577228e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 42 SNES Function norm 2.253098577212e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 43 SNES Function norm 2.253098577174e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 44 SNES Function norm 2.253098577166e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 45 SNES Function norm 2.253098577158e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 46 SNES Function norm 2.253098577157e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 47 SNES Function norm 2.253098577156e+02 </span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> 48 SNES Function norm 2.253098577156e+02 </span></div><div class=""><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class="">Nonlinear solve did not converge due to DIVERGED_LINE_SEARCH iterations 48</span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> ||r|| = 225.31, 7999 entries</span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> ||rp|| = 140.021, 3 entries</span></div><div style="margin: 0px; font-family: Menlo;" class=""><span style="font-size: 12px;" class=""> ||rQ|| = 176.518, 7996 entries</span></div></div><div class=""><br class=""></div><div class="">Since I think we were convinced that this was intrinsic to the problem, and not a function of the Jacobian function, I am using my Jacobian.</div></div></div></blockquote><div class=""><br class=""></div><div class="">Okay, I see no pattern in the fields. Lets plot these 2 vectors, -vec_view draw, and screenshot.</div><div class=""><br class=""></div><div class=""> <span class="Apple-converted-space"> </span>Matt</div><div class=""> </div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;" class=""><div class=""><span class=""><font color="#888888" class="">-gideon<br class=""></font></span></div></div></blockquote></div><br class=""><br clear="all" class=""><span class="HOEnZb"><font color="#888888" class=""><div class=""><br class=""></div>--<span class=""> </span><br class=""><div class="">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br class="">-- Norbert Wiener</div></font></span></div></div></div></blockquote></div><br class=""></div></div></blockquote></div><br class=""><br clear="all" class=""><div class=""><br class=""></div>--<span class="Apple-converted-space"> </span><br class=""><div class="gmail_signature">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br class="">-- Norbert Wiener</div></div></div></div></blockquote></div><br class=""></body></html>