backend_snapshot/scripts/inference/run_sfp4_single.sh

#!/bin/bash
#SBATCH --job-name=sfp4-s0
#SBATCH --account=nvr_elm_llm
#SBATCH --partition=interactive
#SBATCH --nodes=1
#SBATCH --gres=gpu:1
#SBATCH --cpus-per-task=16
#SBATCH --mem=64G
#SBATCH --time=00:30:00
#SBATCH --output=slurm_logs/sfp4_s0_%j.out
#SBATCH --error=slurm_logs/sfp4_s0_%j.err

set -ex
cd /lustre/fsw/portfolios/nvr/projects/nvr_elm_llm/users/yitongl/code/FastVideo
source .venv/bin/activate
export PYTHONPATH=fastvideo-kernel/python:fastvideo-kernel:$PYTHONPATH
export FASTVIDEO_ATTENTION_BACKEND=SPARSE_FP4_ATTN

mkdir -p outputs_sfp4_s0

# Same prompt, seed, params as dense FP4 run
fastvideo generate \
    --model-path Wan-AI/Wan2.1-T2V-1.3B-Diffusers \
    --sp-size 1 --tp-size 1 --num-gpus 1 \
    --dit-cpu-offload False --vae-cpu-offload False \
    --text-encoder-cpu-offload True --pin-cpu-memory False \
    --height 480 --width 832 --num-frames 81 \
    --num-inference-steps 50 --fps 16 \
    --guidance-scale 6.0 --flow-shift 8.0 \
    --prompt "Will Smith casually eats noodles, his relaxed demeanor contrasting with the energetic background of a bustling street food market. The scene captures a mix of humor and authenticity. Mid-shot framing, vibrant lighting." \
    --seed 1024 \
    --VSA-sparsity 0.0 \
    --output-path outputs_sfp4_s0/

echo "=== Done ==="
ls -lh outputs_sfp4_s0/*.mp4
echo "--- Dense FP4 reference ---"
ls -lh outputs_dense_fp4/*.mp4