[petsc-users] GAMG and linear elasticity

[Umut Tabak]

On 09/01/2013 02:37 PM, Tabrez Ali wrote:
> I am using solid elements and here's what I get for the smallest 
> problem with -pc_type svd -pc_svd_monitor
>
>     SVD: condition number 4.184203727999e+13, 0 of 2187 singular 
> values are (nearly) zero
I am quite surprised with this condition number by the use of solid 
elements. Do degrees of freedom include rotations also which might 
explain the difference in scaling?