<div dir="ltr"><div>Hi Barry, thanks for the help, I've done as you suggested. Now, I get an error that I'm unfamiliar with that goes away if I comment out SNESSetUpdate(). This error pops up after several successful iterations, so I'm not sure what's goin on here. The full message is copied below.</div><div><br></div><div>mpirun -n 1 a -snes_type vinewtonrsls -snes_monitor -snes_mf -snes_converged_reason</div><div><br></div><div> 0 SNES Function norm 1.319957381248e+02 <br> 1 SNES Function norm 3.164228677282e+01 <br> 2 SNES Function norm 5.157408019535e+00 <br> 3 SNES Function norm 2.290604723696e-01 <br>[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------<br>[0]PETSC ERROR: Corrupt argument: <a href="https://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind">https://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind</a><br>[0]PETSC ERROR: Object already free: Parameter # 2<br>[0]PETSC ERROR: See <a href="https://www.mcs.anl.gov/petsc/documentation/faq.html">https://www.mcs.anl.gov/petsc/documentation/faq.html</a> for trouble shooting.<br>[0]PETSC ERROR: Petsc Release Version 3.13.2, unknown <br>[0]PETSC ERROR: a on a arch-linux2-c-debug named alexprescott-ThinkPad-T420s by alexprescott Fri Sep 11 16:49:38 2020<br>[0]PETSC ERROR: Configure options <br>[0]PETSC ERROR: #1 SNESComputeJacobian() line 2676 in /home/alexprescott/Documents/petsc/src/snes/interface/snes.c<br>[0]PETSC ERROR: #2 SNESSolve_VINEWTONRSLS() line 386 in /home/alexprescott/Documents/petsc/src/snes/impls/vi/rs/virs.c<br>[0]PETSC ERROR: #3 SNESSolve() line 4519 in /home/alexprescott/Documents/petsc/src/snes/interface/snes.c<br>[0]PETSC ERROR: #4 PetscWrapperFcn() line 222 in petscshell_leq9nodes.c<br>[0]PETSC ERROR: #5 main() line 285 in petscshell_leq9nodes.c<br>[0]PETSC ERROR: PETSc Option Table entries:<br>[0]PETSC ERROR: -snes_converged_reason<br>[0]PETSC ERROR: -snes_mf<br>[0]PETSC ERROR: -snes_monitor<br>[0]PETSC ERROR: -snes_type vinewtonrsls<br>[0]PETSC ERROR: ----------------End of Error Message -------send entire error message to petsc-maint@mcs.anl.gov----------</div><div><br></div><div>Best,</div><div>Alexander<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Sep 10, 2020 at 4:27 PM Barry Smith <<a href="mailto:bsmith@petsc.dev">bsmith@petsc.dev</a>> wrote:<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 style="overflow-wrap: break-word;"><p style="text-align:center"><font color="red"><strong>External Email</strong><br></font></p><div><br></div> Yes, it should be simple to write the code to do this.<div><br></div><div> Provide a function that calls SNESVISetVariableBounds() using your criteria then call SNESSetUpdate() to have that function called on each iteration of SNES to reset the bounds.</div><div><br></div><div> If this will converge to what you desire I have no clue. But each step will find a result that satisfies the current bounds you set.</div><div><br></div><div> Barry</div><div><br></div><div> <br><div><br><div><br><blockquote type="cite"><div>On Sep 10, 2020, at 5:15 PM, Alexander B Prescott <<a href="mailto:alexprescott@email.arizona.edu" target="_blank">alexprescott@email.arizona.edu</a>> wrote:</div><br><div><div dir="ltr"><div>Hi there,</div><div><br></div><div>I have a quick question (hopefully) that I didn't find addressed in the documentation or user list archives. Is it possible to change the SNES Variational Inequality bounds from one solver iteration to the next?</div><div>My goal is to update the bounds such that a specific entry in the solution vector remains the supremum throughout the entire execution.</div><div><br></div><div>Best,</div><div>Alexander<br></div><div><br>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:12.8px"><span style="font-family:arial,sans-serif">Alexander</span><span style="font-family:arial,sans-serif"> </span><span style="font-family:arial,sans-serif">Prescott</span><br></div><div style="font-size:12.8px"><span style="font-family:arial,sans-serif"><a href="mailto:alexprescott@email.arizona.edu" target="_blank">alexprescott@email.arizona.edu</a></span></div><div style="font-size:12.8px"><div style="font-family:arial,sans-serif"><span>PhD</span> <span>Candidate</span>, The University of Arizona</div><div style="font-family:arial,sans-serif">Department of Geosciences</div><div style="font-family:arial,sans-serif">1040 E. 4th Street</div><div style="font-family:arial,sans-serif">Tucson, AZ, 85721</div></div></div></div></div></div></div></div></div></div>
</div></blockquote></div><br></div></div></div></blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="font-size:12.8px"><span style="font-family:arial,sans-serif">Alexander</span><span style="font-family:arial,sans-serif"> </span><span style="font-family:arial,sans-serif">Prescott</span><br></div><div style="font-size:12.8px"><span style="font-family:arial,sans-serif"><a href="mailto:alexprescott@email.arizona.edu" target="_blank">alexprescott@email.arizona.edu</a></span></div><div style="font-size:12.8px"><div style="font-family:arial,sans-serif"><span>PhD</span> <span>Candidate</span>, The University of Arizona</div><div style="font-family:arial,sans-serif">Department of Geosciences</div><div style="font-family:arial,sans-serif">1040 E. 4th Street</div><div style="font-family:arial,sans-serif">Tucson, AZ, 85721</div></div></div></div></div></div></div></div>