Re: [deal.II] Possible Mistake and improvement in QMRS implementation

2017-01-31 Thread Wolfgang Bangerth
On 01/31/2017 11:24 AM, Ingo Kligge wrote: during my work with the Krylov subspace method QMRS in deal.ii I met some problems: the implementation of the method is, as stated in the class description, adapted from Algorithm 5.1 in /Freund/Nachtigal: Software for simplified Lanczos and QMR algorit

[deal.II] Possible Mistake and improvement in QMRS implementation

2017-01-31 Thread Ingo Kligge
Hello everyone, during my work with the Krylov subspace method QMRS in deal.ii I met some problems: the implementation of the method is, as stated in the class description, adapted from Algorithm 5.1 in *Freund/Nachtigal: Software for simplified Lanczos and QMR algorithms, Appl. Num. Math. 19 (