[petsc-users] any good references on matrix scaling

[Umut Tabak]

Dear all,

I am looking for some references for matrix scaling where I would like 
to improve the conditioning of a block representation such as

A C
C^T B

where the terms in A and B blocks are of very different orders, such as 
A is of 1e+8 and B for instance is of order 1e-4 . The ratios can get 
even worse but not better on the problems I tried.

I am trying have an overview for some cheap conditioning approaches for 
this problem.

Any ideas/references are appreciated.

BR,
Umut