oofem-wiki

Summary of OOFEM command-line options:

-v prints oofem version
-f (string) input file name
-r (int) restarts analysis from given step
-ar (int) restarts adaptive analysis from given step
-l (int) sets treshold for log messages (Errors=0, Warnings=1, Relevant=2, Info=3, Debug=4)
-rn turns on renumbering (Sloan algorithm)
-qo (string) redirects the standard output stream to given file
-qe (string) redirects the standard error stream to given file
-c creates context file for each solution step

Use command line -ksp_type to choose the PETSc solver kind.
- Options are: richardson, chebychev, cg, gmres, tcqmr, bcgs, cgs, tfqmr, cr, lsqr, bicg, or preonly.
Use -ksp_gmres_restart with gmres and -ksp_richardson_scale for richardson.
Use command line -pc_type to choose the PETSc preconditioner.
- Options are: jacobi, bjacobi, sor, eisenstat, icc, ilu, asm, ksp, lu, or cholesky
- Loads of options exist for using these preconditioners as well. See most recent PETSc manual.
- Loads of externally supplied solvers as well that need to be hooked in.
Use command line -log_summary to get lots of PETSc information about your run.
Use -ksp_rtol, -ksp_atol, -ksp_divtol, and -ksp_max_it for setting other options.
Monitor convergence with -ksp_monitor and see info about preconditioners etc. with -ksp_view.