From: Martin Kronbichler Date: Mon, 23 May 2022 12:15:06 +0000 (+0200) Subject: Changelog X-Git-Tag: v9.4.0-rc1~167^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff356b5cd9f1bed9f0982c5fed61c756d0389f59;p=dealii.git Changelog --- 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)