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5f4e9ea | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | #!/usr/bin/env bash
# Interactive 2xH100 LoRA SFT. Run this on the compute node, not the login node.
# Effective batch = 1 * 16 * 2 = 32
set -euo pipefail
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"
export PYTHONPATH="$ROOT/src${PYTHONPATH:+:$PYTHONPATH}"
export HF_HOME="${HF_HOME:-$ROOT/.cache/huggingface}"
export TOKENIZERS_PARALLELISM=false
if [[ -n "${PHYSICS_SFT_CONDA_ENV:-}" ]]; then
# shellcheck disable=SC1091
source ~/.bashrc
conda activate "$PHYSICS_SFT_CONDA_ENV"
elif [[ -x "$ROOT/.venv/bin/python" ]]; then
# shellcheck disable=SC1091
source "$ROOT/.venv/bin/activate"
fi
PYTHON="$(command -v python)"
echo "cwd=$(pwd) python=$PYTHON CUDA_VISIBLE_DEVICES=${CUDA_VISIBLE_DEVICES:-all}"
nvidia-smi -L || true
# DDP, not ZeRO-3: LoRA 7B fits on one H100; ZeRO-3 made the first step take many minutes.
"$PYTHON" -m accelerate.commands.launch --num_processes 2 \
--config_file configs/accelerate_ddp_2gpu.yaml \
src/physics_model/sft.py --config configs/sft_qwen25vl_7b_2gpu.yaml \
--skip-length-scan
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