Research Article
Residual-Based Simpler Block GMRES for Nonsymmetric Linear Systems with Multiple Right-Hand Sides
Algorithm 5
Determination of (
, , ) or (
, , ).
Choose a relative deflation threshold . | Compute the SVD of as , with , | ā, ; or the SVD of as , with | ā, , . | Select singular values of , such that ; or singular values of such that . | Define as ; or as . |
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