From ff356b5cd9f1bed9f0982c5fed61c756d0389f59 Mon Sep 17 00:00:00 2001 From: Martin Kronbichler Date: Mon, 23 May 2022 14:15:06 +0200 Subject: [PATCH] Changelog --- doc/news/changes/minor/20220523Kronbichler | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 doc/news/changes/minor/20220523Kronbichler diff --git a/doc/news/changes/minor/20220523Kronbichler b/doc/news/changes/minor/20220523Kronbichler new file mode 100644 index 0000000000..ba66241dce --- /dev/null +++ b/doc/news/changes/minor/20220523Kronbichler @@ -0,0 +1,7 @@ +New: PreconditionChebyshev can now also estimate eigenvalues with the power +method, rather than the Lanczos algorithm underlying the SolverCG +estimation. This is useful for matrices that are slightly non-symmetric such +that the eigenvalue estimate of SolverCG breaks down, but not too much so that +the Chebyshev iteration is still a useful iteration. +
+(Martin Kronbichler, 2022/05/23) -- 2.39.5