Reproducible environment

• use Dockerfile to maintain reproducible environments & performance
• separate build-dependencies from release images by multi-stage Docker build
• use --rm containers for testing, all changes to the persistent environment should be done inside Dockerfile, not in container.

audio_length_adjuster.py

a Python tool generated using deepseek.

# adjust audio file length to 600 seconds by truncating or repeating
audio_length_adjuster.py input.mp3 output.mp3 600

test_fast_whisper.py

pip install viztracer
# use viztracer to generate python profiling json log
viztracer test_fast_whisper.py

# use Nsight System to generate CUDA API & kernel tracing log
/opt/nvidia/nsight-systems/2025.5.1/bin/nsys profile --trace=cuda python3 test_fast_whisper.py