Block nonsymmetric Lanczos iteration

nekStab / LightKrylov

Lightweight implementation of Krylov subspace techniques in Fortran.

BSD 3-Clause "New" or "Revised" License

18 stars 0 forks source link

Block nonsymmetric Lanczos iteration #7

Closed loiseaujc closed 8 months ago

loiseaujc commented 1 year ago

Implementation of the block-version of the nonsymmetric Lanczos iteration. Use cases:

Moment-matching ROM of MIMO LTI systems.

Low-priority since development of the new package has not even started.

loiseaujc commented 8 months ago

Given how numerically unstable the standard nonsymmetric Lanczos factorization, I expect the block version of be even more sensitive. Closing this issue in favor of #6 and its two-sided variant.