<div dir="ltr"><div dir="ltr">On Mon, Jan 24, 2022 at 4:42 PM Matthew Knepley <<a href="mailto:knepley@gmail.com">knepley@gmail.com</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Okay, I can run your example and get an error. I am looking at it. Not sure if it is us or Hypre yet.</div></blockquote><div><br></div><div>This is failing inside Hypre. It appears that the A_diag offset array does not match the matrix. Are you giving Hypre</div><div>a rectangular matrix? If so, it appears that the code cannot handle it and accidentally indexes out of the array.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div> Thanks,</div><div><br></div><div> Matt</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 24, 2022 at 12:39 PM Nicolas Alejandro Barnafi <<a href="mailto:nicolas.barnafi@unimi.it" target="_blank">nicolas.barnafi@unimi.it</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>Please let me know if you were able to run the example (or anyone else). Thanks for the help. </div><div>Kind regards<br><br><span>Il 21/01/22 18:05, <b>"Nicolas Alejandro Barnafi" </b> <<a href="mailto:nicolas.barnafi@unimi.it" target="_blank">nicolas.barnafi@unimi.it</a>> ha scritto:</span><blockquote style="border-left:1px solid rgb(0,0,255);padding-left:13px;margin-left:0px" type="cite"><div>Thank you Matt, I have trimmed down ex10 (a lot) to do as required, and it indeed reproduces the error. <div>You may find it attached and it can be reproduced with </div><div>./ex10 -fA Amat -fP Pmat -fG Gmat -ksp_type gmres -pc_type hypre -pc_hypre_type ams</div><div><br></div><div>Thank you!<br><br><span>Il 21/01/22 16:35, <b>Matthew Knepley </b> <<a href="mailto:knepley@gmail.com" target="_blank">knepley@gmail.com</a>> ha scritto:</span><blockquote style="border-left:1px solid rgb(0,0,255);padding-left:13px;margin-left:0px" type="cite"><div><div dir="ltr"><div dir="ltr">On Fri, Jan 21, 2022 at 9:50 AM Nicolas Alejandro Barnafi <<a href="mailto:nicolas.barnafi@unimi.it" target="_blank">nicolas.barnafi@unimi.it</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Dear community, <div><br></div><div>I'm giving the discrete gradient to a PC object (sub PC of a fieldsplit) but HYPRE internally gives a segmentation violation error. The matrix has been adequately set, as I have added it to the program output for inspection. Has this happened to anyone? </div></blockquote><div><br></div><div>Is there a chance of sending us something that we can run? Alternatively, can you run</div><div><br></div><div> <a href="https://gitlab.com/petsc/petsc/-/blob/main/src/ksp/ksp/tutorials/ex10.c" rel="noopener noreferrer" target="_blank">https://gitlab.com/petsc/petsc/-/blob/main/src/ksp/ksp/tutorials/ex10.c</a></div><div><br></div><div>loading your matrix and giving options to select Hypre? Then we can do the same thing here with your matrix.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><div><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>I have attached the error below together with the discrete gradient, in case you see something I am missing.</div><div><br></div><div>The code is currently running in serial, so I don't expect communication/partitioning to be an issue (although it could be in the future). </div><div><br></div><div>Thanks in advance, </div><div>Nicolas</div><div><br></div><div><br></div><div>------------------------------ PETSc output ------------------------------------</div><div><br></div><div><div>Mat Object: 1 MPI processes</div><div> type: seqaij</div><div> -1.00000e+00 1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 </div><div> 1.00000e+00 0.00000e+00 -1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 </div><div> -1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 </div><div> 0.00000e+00 -1.00000e+00 0.00000e+00 1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 </div><div> 0.00000e+00 1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 -1.00000e+00 0.00000e+00 0.00000e+00 </div><div> 0.00000e+00 0.00000e+00 1.00000e+00 -1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 </div><div> 0.00000e+00 0.00000e+00 1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 -1.00000e+00 0.00000e+00 </div><div> 0.00000e+00 0.00000e+00 0.00000e+00 -1.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 1.00000e+00 </div><div> 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 1.00000e+00 -1.00000e+00 0.00000e+00 0.00000e+00 </div><div> 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 -1.00000e+00 0.00000e+00 1.00000e+00 0.00000e+00 </div><div> 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 1.00000e+00 0.00000e+00 -1.00000e+00 </div><div> 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 0.00000e+00 -1.00000e+00 1.00000e+00 </div><div>[0]PETSC ERROR: ------------------------------------------------------------------------</div><div>[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, probably memory access out of range</div><div>[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger</div><div>[0]PETSC ERROR: or see <a href="https://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind" rel="noopener noreferrer" target="_blank">https://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind</a></div><div>[0]PETSC ERROR: or try <a href="http://valgrind.org" rel="noopener noreferrer" target="_blank">http://valgrind.org</a> on GNU/linux and Apple Mac OS X to find memory corruption errors</div><div>[0]PETSC ERROR: likely location of problem given in stack below</div><div>[0]PETSC ERROR: --------------------- Stack Frames ------------------------------------</div><div>[0]PETSC ERROR: Note: The EXACT line numbers in the stack are not available,</div><div>[0]PETSC ERROR: INSTEAD the line number of the start of the function</div><div>[0]PETSC ERROR: is given.</div><div>[0]PETSC ERROR: [0] jac->setup line 408 /home/ubuntu/petsc/src/ksp/pc/impls/hypre/hypre.c</div><div>[0]PETSC ERROR: [0] PCSetUp_HYPRE line 223 /home/ubuntu/petsc/src/ksp/pc/impls/hypre/hypre.c</div><div>[0]PETSC ERROR: [0] PCSetUp line 971 /home/ubuntu/petsc/src/ksp/pc/interface/precon.c</div><div>[0]PETSC ERROR: [0] KSPSetUp line 319 /home/ubuntu/petsc/src/ksp/ksp/interface/itfunc.c</div><div>[0]PETSC ERROR: [0] KSPSolve_Private line 615 /home/ubuntu/petsc/src/ksp/ksp/interface/itfunc.c</div><div>[0]PETSC ERROR: [0] KSPSolve line 884 /home/ubuntu/petsc/src/ksp/ksp/interface/itfunc.c</div><div>[0]PETSC ERROR: [0] PCApply_FieldSplit line 1241 /home/ubuntu/petsc/src/ksp/pc/impls/fieldsplit/fieldsplit.c</div><div>[0]PETSC ERROR: [0] PCApply line 426 /home/ubuntu/petsc/src/ksp/pc/interface/precon.c</div><div>[0]PETSC ERROR: [0] KSP_PCApply line 281 /home/ubuntu/petsc/include/petsc/private/kspimpl.h</div><div>[0]PETSC ERROR: [0] KSPInitialResidual line 40 /home/ubuntu/petsc/src/ksp/ksp/interface/itres.c</div><div>[0]PETSC ERROR: [0] KSPSolve_GMRES line 233 /home/ubuntu/petsc/src/ksp/ksp/impls/gmres/gmres.c</div><div>[0]PETSC ERROR: [0] KSPSolve_Private line 615 /home/ubuntu/petsc/src/ksp/ksp/interface/itfunc.c</div><div>[0]PETSC ERROR: [0] KSPSolve line 884 /home/ubuntu/petsc/src/ksp/ksp/interface/itfunc.c</div><div>[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------</div><div>[0]PETSC ERROR: Signal received</div><div>[0]PETSC ERROR: See <a href="https://www.mcs.anl.gov/petsc/documentation/faq.html" rel="noopener noreferrer" target="_blank">https://www.mcs.anl.gov/petsc/documentation/faq.html</a> for trouble shooting.</div><div>[0]PETSC ERROR: Petsc Release Version 3.14.6, unknown </div><div>[0]PETSC ERROR: Unknown Name on a arch-linux-c-debug named ubuntu-ThinkPad-L14-Gen-1 by ubuntu Fri Jan 21 15:37:45 2022</div><div>[0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ --with-fc=gfortran --download-mpich --download-fblaslapack --with-mpi=1 --download-superlu_dist --download-mumps --download-hypre --with-debugging=1 COPTFLAGS="-O3 -march=native -mtune=native" CXXOPTFLAGS="-O3 -march=native -mtune=native" FOPTFLAGS="-O3 -march=native -mtune=native" --download-scalapack --download-hpddm</div><div>[0]PETSC ERROR: #1 User provided function() line 0 in unknown file</div><div>[0]PETSC ERROR: Checking the memory for corruption.</div><div>application called MPI_Abort(MPI_COMM_WORLD, 50176059) - process 0</div><div>[unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=50176059</div><div>:</div><div>system msg for write_line failure : Bad file descriptor</div></div></blockquote></div><br><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.cse.buffalo.edu/~knepley/" rel="noopener noreferrer" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div></div></blockquote></div>
</div></blockquote></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div>