[Getdp] Questions on solver parameters
hypsin at gmail.com
hypsin at gmail.com
Fri Feb 21 19:55:50 CET 2020
Hello,
I am just learning to use GetDP as I have adopted some code, and would very
much appreciate a few pointers on the solver options!
According to the manual, GetDP uses linear solvers from PETSc by default,
and I can change solver options/parameters in the command lines or .petscrc
file. I have a few questions about this:
1) I ran a simple electrostatic model and it showed, "preonly lu mumps"
during processing, I think, that meant the direct LU solver from MUMPS was
used? Is this the default solver option within PETSc?
2) How I can find the default tolerance settings? Oddly I can't seem to
find a .petscrc file within my directories... I am using the precompiled
GetDP 3.0 version download from the website.
Thank you for your help!
Regards,
Shin
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