Alex, If you are ok with plan text you can also put all your "command line arguments" in a text file (using # for comment lines) like
-ksp_rtol 1.e-3 # very tight tolerance for SNES -snes_rtol 1.e-12 and provide the file to PETSc via the command line argument :-) -options_file filename a file with a standard name petscrc in the running directory or PetscOptionsInsertFile() https://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscOptionsInsertFile.html <https://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/PetscOptionsInsertFile.html> Barry > On Aug 20, 2020, at 11:44 PM, Alex Fleeter <luis.satur...@gmail.com> wrote: > > Thanks, we will try that. I have never used YAML before. > > Anyway, we feel using command line arguments is a bit old fashioned. It can > be quite desirable to set parameters from a human-readable file. > > On Thu, Aug 20, 2020 at 9:38 PM Jed Brown <j...@jedbrown.org > <mailto:j...@jedbrown.org>> wrote: > You can read from a YAML file with -options_file_yaml file.yaml or via > > https://www.mcs.anl.gov/petsc/petsc-master/docs/manualpages/Sys/PetscOptionsInsertFileYAML.html > > <https://www.mcs.anl.gov/petsc/petsc-master/docs/manualpages/Sys/PetscOptionsInsertFileYAML.html> > > Would this work for you or do you really want XML? > > Alex Fleeter <luis.satur...@gmail.com <mailto:luis.satur...@gmail.com>> > writes: > > > Hi: > > > > Does PETSc have or plan to enable reading arguments from an XML file? > > Something like the Teuchos package in Trilinos. > > > > Thanks, > > > > AF
