Hi,
I am running ex5 and ex20 under $PETSC_DIR/src/snes/examples/tutorials.
I need to see some non-converged cases. For ex5, I tried different values for
"par" while for ex20, "beta" was varied (to create different inputs thus
different problems to solve). Now it seems that no matter which solver+pc I
used, all cases converged for both applications. Let me explain what I need
using an example...For ex5, par=xxx, using "-ksp_type gmres -pc_type ilu" will
make the solution converge while using "-ksp_type cg -pc_type jacobi" cannot
(all ksp's and pc's are just randomly picked...they may not make sense). What
would this "xxx" value be? Or is there any input parameters I am missing out
for these applications?
Thanks a lot!
Qian
Qian Zhu, Ph.D.
Mathematics and Computer Science Division
Argonne National Laboratory
9700 S.Cass Avenue
Argonne, IL 60439-4844
Phone: 630-252-0086
