Create osu_benchmark.md

Author: hpjeonGIT

Diff for: osu_benchmark.md

@@ -0,0 +1,11 @@
+## Testing latency b/w 2 nodes
+- Prepare a template file
+- bash orchestrator.sh
+```sh
+#!/bin/bash
+for i in {004,005,006}
+do 
+echo -n "$i"
+sed "s/XXX/${i}/" template > $i.host
+mpirun -np 2 -machinefile ./$i.host /opt/osu_benchmark/bin/pt2pt/osu_latency |& tee log.$i
+```