[petsc-users] LDL^T Decomposition and matrix rows/columns reordering

[Sonya Blade]

Dear All,

I'd like to know is there a function in Petsc or in Slepc for calculating the 
LTL^T decomposition?

Aside from that If I want to perform the rows and column reordering which function 
or function set should I use in Petsc? I haven't see any vector extraction 
from matrices on the manual. 

How can I perform the gauss elimination method in Petsc?

Your help will be appreciated.

Regards,