[petsc-users] RCM for ILU?

[Qin Lu]

Thanks a lot!
 
Qin



On Friday, February 14, 2014 11:16 AM, Jed Brown <jed at jedbrown.org> wrote:
  
Qin Lu <lu_qin_2000 at yahoo.com> writes:


> Barry and Jed,
>  
> Nice to know that! Is there a corresponding function call to set RCM?

$ ./ex2 -pc_factor_mat_ordering_type rcm -help | grep -A1 mat_ordering
  -pc_factor_mat_ordering_type <natural>: Reordering to reduce nonzeros in factored matrix (one of) natural nd 1wd rcm qmd rowlength wbm spectral
      (PCFactorSetMatOrderingType)

Looks like you should check out

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