Barry Smith <[email protected]> writes: >> On Oct 3, 2017, at 5:54 AM, zakaryah . <[email protected]> wrote: >> >> I'm still working on this. I've made some progress, and it looks like the >> issue is with the KSP, at least for now. The Jacobian may be >> ill-conditioned. Is it possible to use -snes_test_display during an >> intermediate step of the analysis? I would like to inspect the Jacobian >> after several solves have already completed, > > No, our currently code for testing Jacobians is poor quality and poorly > organized. Needs a major refactoring to do things properly. Sorry
You can use -snes_compare_explicit or -snes_compare_coloring to output differences on each Newton step.
