Merge branch release-2016

[alexxy/gromacs.git] / docs / dev-manual / build-system.rst

diff --git a/docs/dev-manual/build-system.rst b/docs/dev-manual/build-system.rst
index a6762a5d8315a1d86e6a606688da8c57eb6ac9f3..ae313c1bfbf1d1340de416bd147c46d3a12cceb2 100644 (file)
--- a/docs/dev-manual/build-system.rst
+++ b/docs/dev-manual/build-system.rst
@@ -202,6 +202,12 @@ Variables affecting compilation/linking
 
 .. cmake:: GMX_CYCLE_SUBCOUNTERS
 
+   If set to ``ON``, enables performance subcounters that offer more
+   fine-grained mdrun performance measurement and evaluation than the default
+   counters. See :doc:`/user-guide/mdrun-performance` for the description of
+   subcounters which are available.
+   Defaults to ``OFF``.
+
 .. cmake:: GMX_DATA_INSTALL_DIR
 
    Sets the directory under :file:`share/` where data files are installed.