ABLE: An Adaptive Block Lanczos Method for Non-Hermitian Eigenvalue Problems
ABLE: An Adaptive Block Lanczos Method for Non-Hermitian Eigenvalue Problems
This work presents an adaptive block Lanczos method for large-scale non-Hermitian Eigenvalue problems (henceforth the ABLE method). The ABLE method is a block version of the non-Hermitian Lanczos algorithm. There are three innovations. First, an adaptive blocksize scheme cures (near) breakdown and adapts the blocksize to the order of multiple …