The PETSc options all begin with a single dash, so it is -options_file input/main.in
> On Sep 18, 2025, at 3:44 PM, Riousset, Jeremy via petsc-users > <[email protected]> wrote: > > Hi, > > I’m updating a code from PETSc 3.4 to run with the latest PETSc. Here is my > status: > I read the parameters via: mpiexec -n 1 bin/./M4 --options_file input/main.in > I’m not opening main.in correctly > None of the options are retrieved by e.g., PetscOptionsGetReal > Do you have a suggestion to test what file the code is actually trying to > access? > > Thanks > > Jeremy A. Riousset, Ph.D. (he, him, his) > Associate Professor of Engineering Physics > Physical Science > > 1 Aerospace Boulevard > Daytona Beach, FL 32114 > +1 (386) 226-6407 > [email protected] <mailto:[email protected]> > https://urldefense.us/v3/__https://orcid.org/0000-0003-1516-5337__;!!G_uCfscf7eWS!daPHuppUEFVq0MXFucwjQfHajb2F7k9SacXGc97wyrP0Y6xe_NMmBuGL3VWZlGslDIwvXhNegAOGwWLhjspnvIo$ > > <https://urldefense.us/v3/__https://orcid.org/0000-0003-1516-5337__;!!G_uCfscf7eWS!YiGxTKiNGs8EnS4pzFoO1YK18z4fx-sCtisUBloRO8dd6sUuh3kfUkimanAH5cJ-jgPhYw-Qk_8q8BBxAtPO0s_6$> > Embry-Riddle Aeronautical University > Florida | Arizona | Worldwide > >
