Allow using CPU PME with DD and GPU update

[alexxy/gromacs.git] / docs / release-notes / 2021 / 2021.2.rst

diff --git a/docs/release-notes/2021/2021.2.rst b/docs/release-notes/2021/2021.2.rst
index fbcdafdde05b763343dca1842fc9d36ad10fdf3a..00f1b31d4e01415ba4c224fc556a4da881c87b3f 100644 (file)
--- a/docs/release-notes/2021/2021.2.rst
+++ b/docs/release-notes/2021/2021.2.rst
@@ -82,3 +82,14 @@ Fix bond type in GROMOS force fields
 The bond type for C and +N in [ACE] was incorrect.
 
 :issue:`3995`
+
+
+Allow PME on CPU in runs with domain decomposition and GPU update
+"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+Relaxed a limitation which prevented running parallel runs with domain
+decomposition and GPU update to use the CPU for PME (as long as combined
+PP-PME ranks are used). This allows parallel runs to scale when the CPU
+resources are sufficient for PME.
+
+:issue:`4035`