Update

README.md

@@ -73,10 +73,10 @@ print(result.state())
 </pre>
 
 ## Multi-Node
-Multi-node is enabled by setting either the MPI or NCCL enabled flag to True in the computation settings. Below shows the script to launch multi node on 4 GPU in cluster. 
+Multi-node is enabled by setting either the MPI or NCCL enabled flag to True in the computation settings. Below shows the script to launch on 2 nodes with 2 GPUs each. $node_list contains the IP of the nodes assigned.
 
 <pre>
 ```
-mpirun -n 4 --mca opal_common_ucx_opal_mem_hooks 1 --mca orte_base_help_aggregate 0 -mca btl ^openib  -hostfile $node_list python test.py
+mpirun -n 4 -hostfile $node_list python test.py
 ```
 </pre>