<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi All,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I get a very strange error after upgrading PETSc version to 3.18.3, indicating some object is already free. The error is begin and does not crash the code. There is no error before PETSc 3.17.5 versions. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> </span><span style='font-size:10.5pt;font-family:Consolas;color:#6A9955'>!Check coordinates</span><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'><o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> </span><span style='font-size:10.5pt;font-family:Consolas;color:#C586C0'>call</span><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> DMGetCoordinateDM(dmda_flow%da,cda,ierr)<o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> CHKERRQ(ierr)<o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> </span><span style='font-size:10.5pt;font-family:Consolas;color:#C586C0'>call</span><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> DMGetCoordinates(dmda_flow%da,gc,ierr)<o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> CHKERRQ(ierr)<o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> </span><span style='font-size:10.5pt;font-family:Consolas;color:#C586C0'>call</span><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> DMGetLocalBoundingBox(dmda_flow%da,lmin,lmax,ierr)<o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> CHKERRQ(ierr)<o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> </span><span style='font-size:10.5pt;font-family:Consolas;color:#C586C0'>call</span><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> DMGetBoundingBox(dmda_flow%da,gmin,gmax,ierr)<o:p></o:p></span></p><p class=MsoNormal style='line-height:14.25pt;background:#1E1E1E'><span style='font-size:10.5pt;font-family:Consolas;color:#D4D4D4'> CHKERRQ(ierr)<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: Corrupt argument: https://petsc.org/release/faq/#valgrind<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: Object already free: Parameter # 1<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: See https://petsc.org/release/faq/ for trouble shooting.<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: Petsc Release Version 3.18.3, Dec 28, 2022<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: ../min3p-hpc-mpi-petsc-3.18.3 on a linux-gnu-dbg named starblazer by dsu Fri Mar 3 16:26:03 2023<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ --with-fc=gfortran --download-mpich --download-scalapack --download-parmetis --download-metis --download-mumps --download-ptscotch --download-chaco --download-fblaslapack --download-hypre --download-superlu_dist --download-hdf5=yes --download-ctetgen --download-zlib --download-pnetcdf --download-cmake --with-hdf5-fortran-bindings --with-debugging=1<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: #1 VecGetArrayRead() at /home/dsu/Soft/petsc/petsc-3.18.3/src/vec/vec/interface/rvector.c:1928<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: #2 DMGetLocalBoundingBox() at /home/dsu/Soft/petsc/petsc-3.18.3/src/dm/interface/dmcoordinates.c:897<o:p></o:p></p><p class=MsoNormal>[0]PETSC ERROR: #3 /home/dsu/Work/min3p-dbs-backup/src/project/makefile_p/../../solver/solver_ddmethod.F90:2140<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any suggestion on this?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Danyang<o:p></o:p></p></div></body></html>