Restore script for tutorial

docs/source/training_tutorials/sft_lora_finetune_llm.py

@@ -11,7 +11,6 @@
 from optimum.neuron import NeuronHfArgumentParser as HfArgumentParser
 from optimum.neuron import NeuronSFTConfig, NeuronSFTTrainer, NeuronTrainingArguments
 from optimum.neuron.distributed import lazy_load_for_parallelism
-from optimum.neuron.trainers import NeuronTrainer
 
 
 def format_dolly(examples):
@@ -24,38 +23,19 @@ def format_dolly(examples):
         output_text.append(prompt)
     return output_text
 
-def format_dolly(example):
-    instruction = f"### Instruction\n{example['instruction']}"
-    context = f"### Context\n{example['context']}" if len(example["context"]) > 0 else None
-    response = f"### Answer\n{example['response']}"
-    prompt = "\n\n".join([i for i in [instruction, context, response] if i is not None])
-    return {"text": prompt}
-
 
 def training_function(script_args, training_args):
     dataset = load_dataset("databricks/databricks-dolly-15k", split="train")
 
     tokenizer = AutoTokenizer.from_pretrained(script_args.model_id)
     tokenizer.pad_token = tokenizer.eos_token
 
-    # TODO: remove, we try to overfit.
-    dataset = dataset.select([0] * 10000)
-    dataset = dataset.map(format_dolly)
-
-    def tokenize(example):
-        output = tokenizer(example["text"], padding="max_length", max_length=1024, truncation=True)
-        output["labels"] = output["input_ids"]
-        return output
-
-    dataset = dataset.map(tokenize)
-
-
     with lazy_load_for_parallelism(tensor_parallel_size=training_args.tensor_parallel_size):
         model = AutoModelForCausalLM.from_pretrained(script_args.model_id)
 
     config = LoraConfig(
         r=16,
-        lora_alpha=32,
+        lora_alpha=16,
         lora_dropout=0.05,
         target_modules=["q_proj", "gate_proj", "v_proj", "o_proj", "k_proj", "up_proj", "down_proj"],
         bias="none",
@@ -66,24 +46,17 @@ def tokenize(example):
     sft_config = NeuronSFTConfig(
         max_seq_length=1024,
         packing=False,
-        dataset_text_field="text",
         **args,
     )
 
-    trainer = NeuronTrainer(
+    trainer = NeuronSFTTrainer(
+        args=sft_config,
         model=model,
-        args=training_args, 
-        train_dataset=dataset,
+        peft_config=config,
         tokenizer=tokenizer,
+        train_dataset=dataset,
+        formatting_func=format_dolly,
     )
-    #trainer = NeuronSFTTrainer(
-    #    args=sft_config,
-    #    model=model,
-    #    # peft_config=config,
-    #    tokenizer=tokenizer,
-    #    train_dataset=dataset,
-    #    # formatting_func=format_dolly,
-    #)
 
     # Start training
     trainer.train()