> On 21 May 2021, at 7:17 PM, Pierre Jolivet <[email protected]> wrote: > > > >> On 21 May 2021, at 6:03 PM, Stefano Zampini <[email protected] >> <mailto:[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>.
I see, anyway you do not need the check if the loop range [rStart,rEnd). So now I don’t understand why the loop must be [rStart,rStart+maxRows], Matt? > > 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 >
