Have a look at the options related functions in the system section of the man pages: https://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/index.html You can get options from the petsc option database and pass them to your user code. You can also use petscBag to pass a C struct or a fortran derived type to your user code.
Regards, Blaise > On Dec 20, 2020, at 10:03 AM, sthavishtha bhopalam <[email protected]> > wrote: > > Hello PETSc users! > > I wanted to know how one could parse user-defined variables (not the inbuilt > PETSc options) in a PETSc code using YAML? Any suggestions? To my knowledge, > the existing YAML parser in PETSc solely reads the PETSc options like snes, > ksp, pc etc. as described here > (https://lists.mcs.anl.gov/mailman/htdig/petsc-users/2020-August/042074.html) > but is incapable to read user-defined variables, which may be specific to a > code. > > Thanks > ------------------------------------------- > Regards > > Sthavishtha > > > > -- A.K. & Shirley Barton Professor of Mathematics Adjunct Professor of Mechanical Engineering Adjunct of the Center for Computation & Technology Louisiana State University, Lockett Hall Room 344, Baton Rouge, LA 70803, USA Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 Web http://www.math.lsu.edu/~bourdin
