Feat(readme): improve docs on multi-gpu

Author: NanoCode012

Diff for: README.md

@@ -36,8 +36,6 @@ git clone https://github.com/OpenAccess-AI-Collective/axolotl
 pip3 install -e .
 pip3 install -U git+https://github.com/huggingface/peft.git
 
-accelerate config
-
 # finetune lora
 accelerate launch scripts/finetune.py examples/openllama-3b/lora.yml
 
@@ -525,6 +523,21 @@ Run
 accelerate launch scripts/finetune.py configs/your_config.yml
 ```
 
+#### Multi-GPU Config
+
+- llama FSDP
+```yaml
+fsdp:
+  - full_shard
+  - auto_wrap
+fsdp_config:
+  fsdp_offload_params: true
+  fsdp_state_dict_type: FULL_STATE_DICT
+  fsdp_transformer_layer_cls_to_wrap: LlamaDecoderLayer
+```
+
+- llama Deepspeed: append `ACCELERATE_USE_DEEPSPEED=true` in front of finetune command
+
 ### Inference
 
 Pass the appropriate flag to the train command:
@@ -575,6 +588,10 @@ Try set `fp16: true`
 
 Try to turn off xformers.
 
+> Message about accelerate config missing
+
+It's safe to ignore it.
+
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