<div dir="ltr"><div dir="ltr">On Mon, Sep 28, 2020 at 10:10 PM Ji Zhang <<a href="mailto:gotofd@gmail.com">gotofd@gmail.com</a>> wrote:<br></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"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><font size="2" face="System"><span><span>Dear all, </span></span></font></div><div dir="ltr"><font size="2" face="System"><span><span><br></span></span></font></div><div dir="ltr"><font size="2" face="System"><span><span>I'm studying physics. Now I have a group of ordinary differential equations (kinetic equations) and I solve them using the Runge-Kutta method implied in PETSc. </span></span></font></div><div dir="ltr"><font size="2" face="System"><span><span><br></span></span></font></div><div dir="ltr"><font size="2" face="System"><span><span>My question is, is there any solver or efficient method in PETSc that can solve stochastic differential equations (i.e. Langevin equation)? </span></span></font></div></div></div></div></blockquote><div><br></div><div>We do not currently have anything that will integrate stochastic differential equations directly. I think we have pieces you would need to build the method.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><font size="2" face="System"><span><span>Thanks a lot. <br><br></span></span></font><div><font size="2" face="System">Best, </font></div><div><font size="2" face="System">Regards, </font></div><div><font size="2" face="System"><span style="background-color:rgba(0,0,0,0);color:rgb(80,0,80)">Zhang Ji, PhD student</span><br></font></div><div><font size="2" face="System"><span style="color:rgb(80,0,80);background-color:rgba(0,0,0,0)">Beijing Computational Science Research Center <br>Zhongguancun Software Park II, No. 10 Dongbeiwang West Road, Haidian District, Beijing 100193, China <br></span></font></div><font size="2"></font></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>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</div><div><br></div><div><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div>