<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><br class=""></div> It is documented in the manual page for SNESConvergedDefault<div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Sep 29, 2020, at 12:41 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" class=""><div dir="ltr" class="">On Tue, Sep 29, 2020 at 9:21 AM Oliver Zacharias <<a href="mailto:olz@freenet.de" class="">olz@freenet.de</a>> wrote:<br class=""></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Dear Sir or Madam,<br class="">
<br class="">
regarding your SNES-Tool one can specifiy at least three types of<br class="">
accuracy which force the code to terminate. I would like know how you<br class="">
have defined (and implemented) the following quantities:<br class="">
<br class="">
a) "rtol"<br class=""></blockquote><div class=""><br class=""></div><div class="">This means a relative tolerance, or bound on ||F(x_n)||/||F(x_0)||</div><div class=""> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
b) "abstol"<br class=""></blockquote><div class=""><br class=""></div><div class="">This mean an absolute tolerance, or a bound on ||F(x_n)||</div><div class=""><br class=""></div><div class=""> Thanks,</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:1px solid rgb(204,204,204);padding-left:1ex">
The definition of the quantity "stol" is already described on one of<br class="">
your manual pages. Would you also like to present a cite where to find<br class="">
those definitions?<br class="">
Thanks in advance,<br class="">
Oliver Zacharias<br class="">
<br class="">
</blockquote></div><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div dir="ltr" class="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" 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><div class=""><br class=""></div><div class=""><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank" class="">https://www.cse.buffalo.edu/~knepley/</a><br class=""></div></div></div></div></div></div></div></div>
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