#!/bin/bash
#SBATCH --job-name=sa_test_set
#SBATCH --mail-type=FAIL,END
#SBATCH --mail-user=dingqy@umich.edu
#SBATCH --nodes=1
#SBATCH --ntasks-per-node=1
#SBATCH --cpus-per-task=4
#SBATCH --mem-per-cpu=11GB
#SBATCH --time=4:00:00
#SBATCH --account=ahowens1
#SBATCH --partition=spgpu
#SBATCH --qos=foe
#SBATCH --reservation=spgpu_foe_nodes
#SBATCH --gres=gpu:a40:1
#SBATCH --output=/nfs/turbo/coe-ahowens-nobackup/dingqy/sa_test_set-%j.log
#
# Stable Audio Open bulk inference on the full 3919-pair test set.
#
# Best ckpt picked from the full lbkb1h5z + dbdxldk4 chain (combined steps
# 1 → 37743). Smoothed (200-step rolling mean) train/loss minimum lives at
# lbkb1h5z step ~9601 (mean=0.610), vs dbdxldk4's plateau ~0.62. Closest
# saved ckpt = lbkb1h5z step 10000. The earlier best_ckpts.json picked
# dbdxldk4 step 30000 (test MSE 0.283), but that eval may have only
# considered dbdxldk4-era ckpts.
#
# Output: /nfs/turbo/coe-ahowens-nobackup/dingqy/inference_demo/sa_test_set/<rel_path>/{bg,fg_pred,mix}.wav
# LUFS protocol: bg=-30 (FIXED), mix=-23 (binary search on fg gain).
set -eu

source /nfs/turbo/coe-ahowens-nobackup/dingqy/miniforge3/etc/profile.d/conda.sh
source /home/dingqy/.hf_token

export HF_CACHE=/nfs/turbo/coe-ahowens-nobackup/dingqy/.cache/huggingface

conda activate stable-audio

# Override SA_CKPT_PATH on sbatch CLI to swap ckpts (e.g. for A/B comparison).
: "${SA_CKPT_PATH:=sa_open_bg2fg_rebalance/lbkb1h5z/epoch=0-step=10000.ckpt}"
export SA_CKPT_PATH

# Download from HF (cached, so re-runs are free).
SA_CKPT=$(python - <<'PYEOF'
from huggingface_hub import hf_hub_download
import os
p = hf_hub_download(repo_id="AE-W/ckpt",
                    filename=os.environ["SA_CKPT_PATH"],
                    repo_type="dataset",
                    cache_dir=os.environ["HF_CACHE"])
print(p, end="")
PYEOF
)
echo "ckpt: $SA_CKPT"

# OUT_DIR overridable so A/B comparison runs (e.g. step 10000 vs 30000) write
# to separate folders without overwriting each other.
: "${OUT_DIR:=/nfs/turbo/coe-ahowens-nobackup/dingqy/inference_demo/sa_test_set}"

python /nfs/turbo/coe-ahowens-nobackup/dingqy/infer_sa_test_set.py \
    --ckpt "$SA_CKPT" \
    --out "$OUT_DIR" \
    --steps 100 --cfg-scale 1.0 \
    --batch-size 4

echo ""
echo "=== sample subfolder check ==="
SAMPLE_DIR=$(find "$OUT_DIR" -name "mix.wav" 2>/dev/null | head -1 | xargs dirname 2>/dev/null)
echo "first subfolder: $SAMPLE_DIR"
[ -n "$SAMPLE_DIR" ] && ls -la "$SAMPLE_DIR"
echo ""
echo "=== count ==="
find "$OUT_DIR" -name "mix.wav" 2>/dev/null | wc -l
echo "done"