<div dir="ltr">I'm experiencing error when doing mesh refinement(mesh x2 for X, Y and Z direction) for 3D poisson problem. <div>PETSc produces no errors when no mesh refinement. I've pasted some debugging info here. Please advise.</div><div><br></div><div><br></div><div><div>[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------</div><div>[0]PETSC ERROR: Invalid argument</div><div>[0]PETSC ERROR: Scalar value must be same on all processes, argument # 3</div><div>[0]PETSC ERROR: See <a href="http://www.mcs.anl.gov/petsc/documentation/faq.html">http://www.mcs.anl.gov/petsc/documentation/faq.html</a> for trouble shooting.</div><div>[0]PETSC ERROR: Petsc Release Version 3.5.4, May, 23, 2015 </div><div>[0]PETSC ERROR: /home/haozhang/FT.NO.FULL/iFluid/iFluid on a arch-linux2-c-debug named vn18 by haozhang Thu Sep 28 23:47:39 2017</div><div>[0]PETSC ERROR: Configure options --with-mpi-dir=/cm/shared/apps/openmpi/gcc/64/1.8.5/ --download-fblaslapack=/home/haozhang/tmp/fblaslapack-3.4.2.tar.gz --download-hypre=/home/haozhang/tmp/hypre-2.9.1a.tar.gz --with-valgrind-include=/home/haozhang/include/valgrind/</div><div>[0]PETSC ERROR: #1 VecAXPBYPCZ() line 731 in /home/haozhang/tmp/petsc-3.5.4_HYPRE/src/vec/vec/interface/rvector.c</div><div>[0]PETSC ERROR: #2 KSPSolve_BCGS() line 87 in /home/haozhang/tmp/petsc-3.5.4_HYPRE/src/ksp/ksp/impls/bcgs/bcgs.c</div><div>[0]PETSC ERROR: #3 KSPSolve() line 460 in /home/haozhang/tmp/petsc-3.5.4_HYPRE/src/ksp/ksp/interface/itfunc.c</div><div>[vn18:99838] *** Process received signal ***</div><div>[vn18:99838] Signal: Aborted (6)</div><div>[vn18:99838] Signal code:  (-6)</div><div>[vn18:99848] *** Process received signal ***</div><div>[vn18:99849] *** Process received signal ***</div><div>[vn18:99849] Signal: Aborted (6)</div><div>[vn18:99849] Signal code:  (-6)</div><div>[vn18:99848] Signal: Aborted (6)</div><div>[vn18:99848] Signal code:  (-6)</div><div>[vn18:99838] [ 0] /lib64/libpthread.so.0(+0xf790)[0x2aaaadbb4790]</div><div>[vn18:99838] [ 1] [vn18:99848] [ 0] /lib64/libpthread.so.0(+0xf790)[0x2aaaadbb4790]</div><div>[vn18:99848] [ 1] /lib64/libc.so.6(gsignal+0x35)[0x2aaaaddf5625]</div><div>[vn18:99838] [ 2] /lib64/libc.so.6(abort+0x175)[0x2aaaaddf6e05]</div><div>[vn18:99838] [ 3] [vn18:99849] [ 0] /lib64/libpthread.so.0(+0xf790)[0x2aaaadbb4790]</div><div>[vn18:99849] [ 1] [vn15:122106] *** Process received signal ***</div><div>[vn15:122106] Signal: Aborted (6)</div><div>[vn15:122106] Signal code:  (-6)</div><div>/lib64/libc.so.6(gsignal+0x35)[0x2aaaaddf5625]</div><div>[vn18:99848] [ 2] /lib64/libc.so.6(abort+0x175)[0x2aaaaddf6e05]</div><div>[vn18:99848] [ 3] /home/haozhang/tmp/petsc-3.5.4_HYPRE/arch-linux2-c-debug/lib/libpetsc.so.3.5(PetscTraceBackErrorHandler+0x503)[0x2aaaaae1d7e1]</div><div>[vn18:99838] [ 4] /lib64/libc.so.6(gsignal+0x35)[0x2aaaaddf5625]</div><div>[vn18:99849] [ 2] /lib64/libc.so.6(abort+0x175)[0x2aaaaddf6e05]</div><div>[vn18:99849] [ 3] [vn15:122107] *** Process received signal ***</div><div>[vn15:122107] Signal: Aborted (6)</div><div>[vn15:122107] Signal code:  (-6)</div><div>[vn16:86295] *** Process received signal ***</div><div>[vn16:86295] Signal: Aborted (6)</div><div>[vn16:86295] Signal code:  (-6)</div><div>[vn18:99824] *** Process received signal ***</div><div>[vn18:99824] Signal: Aborted (6)</div><div>[vn18:99824] Signal code:  (-6)</div><div>[vn18:99844] *** Process received signal ***</div><div>[vn18:99844] Signal: Aborted (6)</div><div>[vn18:99844] Signal code:  (-6)</div><div>/home/haozhang/tmp/petsc-3.5.4_HYPRE/arch-linux2-c-debug/lib/libpetsc.so.3.5(PetscError+0x338)[0x2aaaaae183b3]</div><div><br></div><div><br></div><div><br></div>-- <br><div class="gmail-m_-1122274038155948328gmail_signature">Hao Zhang<br>Dept. of Applid Mathematics and Statistics,<br>Stony Brook University, <br>Stony Brook, New York, 11790</div></div></div>