Move neuron_parallel_compile outside of bash script

[jgray-aws]

Currently, the tutorial call neuron_parallel_compile inside of the bash script. Because neuron_parallel_compile is responsible for setting $NEURON_EXTRACT_GRAPHS_ONLY, this causes the MAX_STEPS set to -1, causing compilation to run for >1 hour.

if [ "$NEURON_EXTRACT_GRAPHS_ONLY" = "1" ]; then
    MAX_STEPS=$((LOGGING_STEPS + 5))
else
    MAX_STEPS=-1
fi

optimum-neuron/docs/source/training_tutorials/sft_lora_finetune_llm.mdx

Lines 215 to 262 in 3748a06

	```bash
	#!/bin/bash
	set -ex
	export NEURON_FUSE_SOFTMAX=1
	export NEURON_RT_ASYNC_EXEC_MAX_INFLIGHT_REQUESTS=3
	export MALLOC_ARENA_MAX=64
	export NEURON_CC_FLAGS="--model-type=transformer --distribution-strategy=llm-training --enable-saturate-infinity --cache_dir=/home/ubuntu/cache_dir_neuron/"
	PROCESSES_PER_NODE=8
	NUM_EPOCHS=1
	TP_DEGREE=2
	PP_DEGREE=1
	BS=1
	GRADIENT_ACCUMULATION_STEPS=8
	LOGGING_STEPS=1
	MODEL_NAME="meta-llama/Meta-Llama-3-8B"
	OUTPUT_DIR=output-$SLURM_JOB_ID
	if [ "$NEURON_EXTRACT_GRAPHS_ONLY" = "1" ]; then
	MAX_STEPS=$((LOGGING_STEPS + 5))
	else
	MAX_STEPS=-1
	fi
	XLA_USE_BF16=1 neuron_parallel_compile torchrun --nproc_per_node $PROCESSES_PER_NODE docs/source/training_tutorials/sft_lora_finetune_llm.py \
	--model_id $MODEL_NAME \
	--num_train_epochs $NUM_EPOCHS \
	--do_train \
	--learning_rate 5e-5 \
	--warmup_ratio 0.03 \
	--max_steps $MAX_STEPS \
	--per_device_train_batch_size $BS \
	--per_device_eval_batch_size $BS \
	--gradient_accumulation_steps $GRADIENT_ACCUMULATION_STEPS \
	--gradient_checkpointing true \
	--bf16 \
	--zero_1 false \
	--tensor_parallel_size $TP_DEGREE \
	--pipeline_parallel_size $PP_DEGREE \
	--logging_steps $LOGGING_STEPS \
	--save_total_limit 1 \
	--output_dir $OUTPUT_DIR \
	--lr_scheduler_type "constant" \
	--overwrite_output_dir
	```

We need to refactor the tutorial to call neuron_parallel_compile on the training script.

Example can be found here:

https://awsdocs-neuron.readthedocs-hosted.com/en/latest/libraries/neuronx-distributed/tutorials/training_llama_tp_zero1.html