<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="">Dear Jed and Emil, <div class="">your suggestion to use L-stable time integrators gave great results, since the SNES now converges with higher timestep values. </div><div class="">The arkimex 2e performs very well, in particular with the extrapolation of the initial guess. </div><div class=""><br class=""></div><div class="">Thank you for your time</div><div class=""><br class=""></div><div class="">Francesco</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">Il giorno 11/feb/2016, alle ore 02:13, Emil Constantinescu <<a href="mailto:emconsta@mcs.anl.gov" class="">emconsta@mcs.anl.gov</a>> ha scritto:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; 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; float: none; display: inline !important;" class="">-ts_arkimex_initial_guess_extrapolate</span></div></blockquote></div><br class=""></div></body></html>