<a href="http://petsc.cs.iit.edu/petsc/petsc-dev/rev/c3192eb7cd93">http://petsc.cs.iit.edu/petsc/petsc-dev/rev/c3192eb7cd93</a><div><br></div><div>I would rather not delete this example because it is the example code accompanying a paper that I like. I wrote essentially the same thing in ts/examples/tutorials/ex26.c (which uses TSPseudo), but having the simple, executable example that exactly reproduces the figure in the paper is still useful. Using TS is somewhat less clear because you have to look at library code to see the algorithm, but I could also live with simply documenting how to get the same results with ts/.../ex26.c.</div>
<div><br></div><div>Preference?</div><div><br></div><div>As a general rule, many elliptic problems arise as the steady state of some dynamical system. If we write the code using the TS interface, then we can always solve the steady problem by taking an infinite step size with nonlinearly implicit Euler. Should we recommend that all such problems be written using the TS interface?</div>