> On 21 May 2021, at 6:03 PM, Stefano Zampini <[email protected]> wrote: > > Emmanuel > > thanks for reporting this. > I believe we have a regression in MatChop from > https://gitlab.com/petsc/petsc/-/commit/038df967165af8ac6c3de46a36f650566a7db07c > > <https://gitlab.com/petsc/petsc/-/commit/038df967165af8ac6c3de46a36f650566a7db07c> > (cc'ing Pierre) > We call MatAssemblyBegin/End within the row loop. Also. I don't understand > why we need to check for r < rend herre > https://gitlab.com/petsc/petsc/-/blob/038df967165af8ac6c3de46a36f650566a7db07c/src/mat/utils/axpy.c#L513 > > <https://gitlab.com/petsc/petsc/-/blob/038df967165af8ac6c3de46a36f650566a7db07c/src/mat/utils/axpy.c#L513>. > nor why we need to allocate newCols (can use cols)
That part is from the initial 8-year old implementation from Matt (https://gitlab.com/petsc/petsc/-/commit/4325cce7191c5c61f4f090c59eaf6773fdee7b48#9d78409dea8190bffda8b68fee5aef233dc1c677 <https://gitlab.com/petsc/petsc/-/commit/4325cce7191c5c61f4f090c59eaf6773fdee7b48#9d78409dea8190bffda8b68fee5aef233dc1c677>). You need the check otherwise this error is raised: https://www.mcs.anl.gov/petsc/petsc-current/src/mat/interface/matrix.c.html#line566 <https://www.mcs.anl.gov/petsc/petsc-current/src/mat/interface/matrix.c.html#line566>. Thanks, Pierre > Pierre, can you take a look? > > Il giorno ven 21 mag 2021 alle ore 18:49 Emmanuel Ayala <[email protected] > <mailto:[email protected]>> ha scritto: > Hi everybody, > > I just updated petsc from version 13 to 15. Before the update everything > works well, then my code give me an error: > > [9]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > [9]PETSC ERROR: Invalid argument > [9]PETSC ERROR: Setting off process row 53484 even though > MatSetOption(,MAT_NO_OFF_PROC_ENTRIES,PETSC_TRUE) was set > [9]PETSC ERROR: See https://www.mcs.anl.gov/petsc/documentation/faq.html > <https://www.mcs.anl.gov/petsc/documentation/faq.html> for trouble shooting. > [9]PETSC ERROR: Petsc Release Version 3.15.0, Mar 30, 2021 > [9]PETSC ERROR: ./comp on a arch-linux-c-opt-O2-superlud_mumps_hyp named > eayala by ayala Fri May 21 10:40:36 2021 > [9]PETSC ERROR: Configure options --with-debugging=0 COPTFLAGS="-O2 > -march=native -mtune=native" CXXOPTFLAGS="-O2 -march=native -mtune=native" > FOPTFLAGS="-O2 -march=native -mtune=native" --download-mpich --download-hypre > --download-mumps --download-scalapack --download-parmetis --download-metis > --download-superlu_dist --download-cmake --download-fblaslapack=1 > --with-cxx-dialect=C++11 > > The error appears after a matrix assembly, the matrix was created with > DMCreateMatrix and updated with MatSetValuesLocal. > > A Little work around I found the solution, avoid using MatChop on this > matrix, but I still need to use MatChop. There is any reason to have this > problem? > > Thanks in advance. > > > > > > > -- > Stefano
