<html><head><base href="x-msg://3888/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Jin,<div> If you are working on integrating power grid DAE equations then you should use petsc-dev instead as we've added an example for it. petsc-dev/src/ts/examples/tutorials/power_grid/stabiltiy_9bus/ex9bus.c. There are other examples in the power_grid directory.</div><div> </div><div>Shri</div><div><br><div><div>On Feb 20, 2013, at 12:19 PM, Jin, Shuangshuang wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; 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; font-size: medium; "><div><font face="Calibri, sans-serif" size="2"><div>Hi, I’m trying to use PETSc to solve a set of first-order differential and algebraic equations such as:</div><div>x' = f(x,y) </div><div>0 = g(x,y)</div><div><font face="Times New Roman, serif"> </font></div><div>The resources I can find online so far are</div><ol style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 36pt; "><li>PETSc Manual: Chapter 6 TS: Scalable ODE and DAE Solvers</li><li>petsc-3.3-p6/src/ts/examples/tutorials</li></ol><div>which still seems vague to me at this moment.</div><div><font face="Times New Roman, serif"> </font></div><div>Can anyone tell me if there’s any more specific references I can refer to as a starting point to tackle this problem?</div><div><font face="Times New Roman, serif"> </font></div><div>Thanks,</div><div>Shuangshuang</div><div><font face="Times New Roman, serif"> </font></div></font></div></span></blockquote></div><br></div></body></html>