Clean up pick_nbnxn_resources

[alexxy/gromacs.git] / docs / user-guide / environment-variables.rst

diff --git a/docs/user-guide/environment-variables.rst b/docs/user-guide/environment-variables.rst
index 86ce9dd2658f6aa9a5b72fb63e5ad3ca3626d990..43016daf1a941d9a2d70dc4d77ea5ba0b4fe7e99 100644 (file)
--- a/docs/user-guide/environment-variables.rst
+++ b/docs/user-guide/environment-variables.rst
@@ -195,8 +195,6 @@ Performance and Run Control
 ``GMX_EMULATE_GPU``
         emulate GPU runs by using algorithmically equivalent CPU reference code instead of
         GPU-accelerated functions. As the CPU code is slow, it is intended to be used only for debugging purposes.
-        The behavior is automatically triggered if non-bonded calculations are turned off using ``GMX_NO_NONBONDED``
-        case in which the non-bonded calculations will not be called, but the CPU-GPU transfer will also be skipped.
 
 ``GMX_ENX_NO_FATAL``
         disable exiting upon encountering a corrupted frame in an :ref:`edr`
@@ -284,6 +282,7 @@ Performance and Run Control
         skip non-bonded calculations; can be used to estimate the possible
         performance gain from adding a GPU accelerator to the current hardware setup -- assuming that this is
         fast enough to complete the non-bonded calculations while the CPU does bonded force and PME computation.
+        Freezing the particles will be required to stop the system blowing up.
 
 ``GMX_NO_PULLVIR``
         when set, do not add virial contribution to COM pull forces.