Generalized Preconditioned Locally Harmonic Residual Eigensolver (GPLHR) v0.1

Software · Tue Apr 25 00:00:00 EDT 2017

DOI:https://doi.org/10.11578/dc.20210521.109· OSTI ID:1353033 · Code ID:57356

Vecharynski, Eugene; Yang, Chao

The software contains a MATLAB implementation of the Generalized Preconditioned Locally Harmonic Residual (GPLHR) method for solving standard and generalized non-Hermitian eigenproblems. The method is particularly useful for computing a subset of eigenvalues, and their eigen- or Schur vectors, closest to a given shift. The proposed method is based on block iterations and can take advantage of a preconditioner if it is available. It does not need to perform exact shift-and-invert transformation. Standard and generalized eigenproblems are handled in a unified framework.

• Short Name / Acronym: GPLHR v.0.1
• Project Type: Open Source, No Publicly Available Repository
• Site Accession Number: 7467; 2017-055
• Software Type: Scientific
• License(s): Other
• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE

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  Primary Award/Contract Number:

  AC02-05CH11231
• DOE Contract Number: AC02-05CH11231
• Code ID: 57356
• OSTI ID: 1353033
• Country of Origin: United States