Re: [deal.II] Condition number and Eigen Values of a Matrix

2020-12-04 Thread Reza Rastak
Thank you so much Jean-Paul. I was able to use SolverCG::connect_condition_number_slot() successfully in my code. Best, Reza On Thursday, December 3, 2020 at 10:57:23 AM UTC-8 Jean-Paul Pelteret wrote: > If it's of any help, our CG and GMRES solvers (and maybe some of the > others?) can

Re: [deal.II] Condition number and Eigen Values of a Matrix

2020-12-03 Thread Jean-Paul Pelteret
If it's of any help, our CG and GMRES solvers (and maybe some of the others?) can return the estimated condition number during / after a call to solve(). https://dealii.org/developer/doxygen/deal.II/classSolverCG.html#a52f1fd3d41765ec06d2d0add1a74a37c

Re: [deal.II] Condition number and Eigen Values of a Matrix

2020-12-02 Thread Wolfgang Bangerth
On 12/2/20 9:30 PM, Reza Rastak wrote: I am trying to calculate the condition number of a Trilinos Block Sparse matrix. Is there an example of that in the documentation that you can point me to? No, and that's actually a quite difficult task because you have to estimate eigenvalues. The

Re: [deal.II] Condition number and Eigen Values of a Matrix

2020-12-02 Thread Reza Rastak
Dear Wolfgang, I am trying to calculate the condition number of a Trilinos Block Sparse matrix. Is there an example of that in the documentation that you can point me to? Thank you, Reza On Sunday, January 31, 2016 at 5:23:31 PM UTC-8 Wolfgang Bangerth wrote: > On 01/31/2016 12:18 PM,

Re: [deal.II] condition number

2016-11-15 Thread Wolfgang Bangerth
Anup, I wanted to know the condition number of my system_matrix and hence I have used the line in blue (below) in my CG solve function. It shows the condition number. But in the documentation the definition of this is not mentioned. You mean the documentation is missing a definition of what

[deal.II] condition number

2016-11-15 Thread Anup Basak
Hello all, I wanted to know the condition number of my system_matrix and hence I have used the line in blue (below) in my CG solve function. It shows the condition number. But in the documentation the definition of this is not mentioned. I mean when I store my system matrix and calculate its