render lerf but torch.cuda.OutOfMemoryError: CUDA out of memory

[jiachen0212]

ns-render camera-path --load-config outputs/xxx/lerf-big/2024-02-02_095634/config.yml --camera-path-filename camera_paths/2024-01-23_154844.json --output-path renders/xxx/lerf.mp4 i use 4090, why oom???