<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Fri, May 27, 2016 at 10:39 AM, Lulu Liu <span dir="ltr"><<a href="mailto:lulu.liu@kaust.edu.sa" target="_blank">lulu.liu@kaust.edu.sa</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><div>I am trying to solve a nonlinear problem using NASM, and see the code in petsc/src/snes/impls/nasm/nasm.c. However, I feel confused about how subsnes for each subdomain gets its own function, and I can not find anything like SNESSetFunction(subsnes,......). Could you show me which line subsnes gets its own function in nasm.c? </div></div></blockquote><div><br></div><div>The function is coming from the DM. The subDMs get the same SNESDM structures as the original DM, and then</div><div>SNESSetDM() is called on them.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>In addition, I would like to set up something using SNESNASMSetSubdomains_NASM (). Is there any example showing how to set subsnes, iscatter, oscatter,gscatter? Thanks!</div></div></blockquote><div><br></div><div>Unfortunately there are no examples. I am not a big fan of this interface which is only really intelligible for Cartesian grids.</div><div>I am going to try and rework it this fall.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>PetscErrorCode SNESNASMSetSubdomains_NASM(SNES snes,PetscInt n,SNES subsnes[],VecScatter iscatter[],VecScatter oscatter[],VecScatter gscatter[])</div><div><br></div></div>
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