[petsc-users] A question on "-pc_factor_mat_ordering_type"

[Zou (Non-US), Ling]

Hi All,

I found many available options for PCILU on this webpage:

http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/PC/PCILU.html

There is an option named -pc_factor_mat_ordering_type, with possible values
such as <natural,nd,1wd,rcm,qmd>. I wonder if anyone has brief descriptions
for these values.

Best,

Ling