X-Git-Url: http://biod.pnpi.spb.ru/gitweb/?p=alexxy%2Fgromacs.git;a=blobdiff_plain;f=docs%2Fuser-guide%2Fenvironment-variables.rst;fp=docs%2Fuser-guide%2Fenvironment-variables.rst;h=1698fcedb260d307b15f8c9c182f17e920165895;hp=026654d36988a1309164adcebbd62c3573a7bb68;hb=5a6c3b3a5ada87dcc7ede0dc79f7e925376745b5;hpb=31ad1552d0e654c8d59363d5e94fb8a573e4d69b

diff --git a/docs/user-guide/environment-variables.rst b/docs/user-guide/environment-variables.rst
index 026654d369..1698fcedb2 100644
--- a/docs/user-guide/environment-variables.rst
+++ b/docs/user-guide/environment-variables.rst
@@ -423,6 +423,7 @@ compilation of OpenCL kernels, but they are also used in device selection.
 
 ``GMX_OCL_DISABLE_FASTMATH``
         Prevents the use of ``-cl-fast-relaxed-math`` compiler option.
+        Not: fast math is always disabled on Intel devices due to instability.
 
 ``GMX_OCL_DUMP_LOG``
         If defined, the OpenCL build log is always written to the
@@ -442,8 +443,8 @@ compilation of OpenCL kernels, but they are also used in device selection.
         ``GMX_OCL_NOGENCACHE``).
 
             - NVIDIA GPUs: PTX code is saved in the current directory
-	      with the name ``device_name.ptx``
-	    - AMD GPUs: ``.IL/.ISA`` files will be created for each OpenCL
+              with the name ``device_name.ptx``
+            - AMD GPUs: ``.IL/.ISA`` files will be created for each OpenCL
               kernel built.  For details about where these files are
               created check AMD documentation for ``-save-temps`` compiler
               option.