added benchmark communication mode comparison supermuc sb

halo_exchange/README.md

@@ -154,6 +154,22 @@ the output should look similar to
 
     Validation successful.
 
+## Benchmarks
+### Communication mode comparison Supermuc Phase 1 Sandybridge
+
+Communication mode comparison test on Supermuc with 10M mesh cells per proc with different communication modes and different number of cores.
+
+Hardware: Supermuc Phase 1 Thin Nodes. Intel Sandy Bridge-EP Xeon E5-2680 8C @2.7GHz, 16 Cores per node.
+
+Commandline: 
+
+	mpiexec -n {ranks} ./8_unstructured_haloex {flags} -v1 -n 10M -i100
+	
+where `{ranks}` is the number of cores, `{flags}` is [`collective`, `p2p`, `p2p-sync`, `p2p-ready`].
+As Supermuc Phase 1 Thin nodes are 8 core dual socket systems, 16 tasks per node are used.
+
+![chart](hpc_kernel_samples/unstructured_grids/halo_exchange/benchmarks/SupermucChart.PNG)
+
 
 ## Known issues