update readme

Author: qingquansong

examples/pytorch/custom_handler_fp8_fsdp1n2_compile/README.md

@@ -15,13 +15,21 @@ sh setup.sh
 In this example we present
 
 ```bash
+# # config the PYTHONPATH if needed
+# export PYTHONPATH=/teamspace/studios/this_studio/pytorch-lightning/examples/pytorch/custom_handler_fp8_fsdp1n2_compile:$PYTHONPATH
+cd pytorch-lightning/examples/pytorch/custom_handler_fp8_fsdp1n2_compile
+
+# fsdp1 + fp8 + torch compile + gradient checkpointing + cpu offloading
+python train.py  --enable_fp8 --enable_torch_compile --enable_gradient_checkpointing --enable_cpu_offload
 
+# fsdp2 + fp8 + torch compile + gradient checkpointing (the example does not implement fsdp2 cpu offloading currently)
+python train.py --enable_fsdp2 --enable_fp8 --enable_torch_compile --enable_gradient_checkpointing
 ```
 
 ## Test the handlers
 
 ```bash
-# config the PYTHONPATH if needed
+# # config the PYTHONPATH if needed
 # export PYTHONPATH=/teamspace/studios/this_studio/pytorch-lightning/examples/pytorch/custom_handler_fp8_fsdp1n2_compile:$PYTHONPATH
 cd pytorch-lightning/examples/pytorch/custom_handler_fp8_fsdp1n2_compile
 pytest tests/*