From 4994d43883590afd68ce47332ca3fc5fc7caf28d Mon Sep 17 00:00:00 2001
From: Jan Eitzinger <jan.eitzinger@fau.de>
Date: Wed, 19 Aug 2020 10:04:34 +0200
Subject: [PATCH] Add documentation for options.

---
 README.md | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 8c03130..6c86ead 100644
--- a/README.md
+++ b/README.md
@@ -17,4 +17,10 @@ Currently all settings are hard-coded in `main.c`.
 
 ## Run the benchmark
 
-Just execute the binary. There are no options.
+Without any options 200 steps with system size 32x32x32 is used.
+
+The default can be changed using the following options:
+```
+-n / --nsteps <int>:  set number of timesteps for simulation
+-nx/-ny/-nz <int>:    set linear dimension of systembox in x/y/z direction
+```