<div dir="ltr">Thank you Barry. I will try this.<div>Should I provide a test in src/binding/petsc4py/test/test_snes.py ?</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le jeu. 22 juin 2023 à 20:41, Barry Smith <<a href="mailto:bsmith@petsc.dev">bsmith@petsc.dev</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div><br></div> You are not missing anything. The petsc4py stub for SNESNASMSetSubdomains() has not been written. You could add it by adding to<div><p style="margin:0px;font-style:normal;font-variant:normal;font-stretch:normal;line-height:normal;font-kerning:auto;font-feature-settings:normal"><span style="font-variant-ligatures:no-common-ligatures">src/petsc4py/PETSc/SNES.pyx and </span>src/petsc4py/PETSc/petscsnes.pxi and then make a merge request <a href="https://petsc.org/release/developers/contributing/" target="_blank">https://petsc.org/release/developers/contributing/</a> to get it into PETSc.</p><div><br><blockquote type="cite"><div>On Jun 22, 2023, at 1:54 PM, Karin&NiKo <<a href="mailto:niko.karin@gmail.com" target="_blank">niko.karin@gmail.com</a>> wrote:</div><br><div><div dir="ltr">Dear PETSc team,<div><br></div><div>I would like to play with aspin-type nonlinear solvers. I have found several tests like snes/tutorials/ex19.c but they all use DA, which I don't want to use since I need to stick at the algebraic level.</div><div>Then, I started looking at petsc4py/demo/ode/heat.py and tried to set up things.</div><div>Unfortunately, I get the error "DM has no default decomposition defined. Set subsolves manually with SNESNASMSetSubdomains()" which, I think, I do understand.</div><div>But I do not find any implementation of the SNESNASMSetSubdomains in petsc4py. </div><div>Am I missing something ? </div><div>Thanks,</div><div>Nicolas</div></div>
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