“Balancing” the Block Davidson–Liu Algorithm
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We describe a simple modification (“balancing”) of the block Davidson–Liu eigenvalue algorithm which allows the norms of the Krylov search directions to decrease naturally as convergence is approached. In the context of integral-direct configuration interaction singles and time-dependent density functional theory, this provides for efficient utilization of density-based screening. Tests within the TeraChem GPGPU code exhibit speedups of ∼2× on systems with up to 1500 atoms, with negligible loss in accuracy.
创建时间：
2016-07-06
