From: Martin Kronbichler <kronbichler@lnm.mw.tum.de>
Date: Thu, 19 Sep 2019 07:21:25 +0000 (+0200)
Subject: Changelog
X-Git-Tag: v9.2.0-rc1~883^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F8797%2Fhead;p=dealii.git

Changelog
---

diff --git a/doc/news/changes/minor/20190919MartinKronbichler b/doc/news/changes/minor/20190919MartinKronbichler
new file mode 100644
index 0000000000..670054045b
--- /dev/null
+++ b/doc/news/changes/minor/20190919MartinKronbichler
@@ -0,0 +1,8 @@
+New: MGTransferMatrixFree::build() now takes an optional second argument to
+specify partitioner objects for LinearAlgebra::distributed::Vector types in
+use elsewhere. If the ghost indices required by the multigrid algorithm are
+contained in the ghosts of the given partitioners, they can be used, saving
+some vector copy operations during MGTransferMatrixFree::restrict_and_add()
+and MGTransferMatrixFree::prolongate().
+<br>
+(Martin Kronbichler, 2019/09/18)