70 lines
2.6 KiB
Bash
Executable File
70 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
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source "${SCRIPT_DIR}/lib/train-common.sh"
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TRAIN_JOB_NAME="${TRAIN_JOB_NAME:?TRAIN_JOB_NAME is required}"
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CHECKPOINT_ROOT="${CHECKPOINT_ROOT:-/checkpoints}"
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CHECKPOINT_DIR="${CHECKPOINT_ROOT}/${TRAIN_JOB_NAME}"
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BASE_MODEL="${BASE_MODEL:-/models/base}"
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TRAIN_CONFIG="${TRAIN_CONFIG:-}"
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TRAIN_GPU_COUNT="${TRAIN_GPU_COUNT:-all}"
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TRAIN_PARALLEL_MODE="${TRAIN_PARALLEL_MODE:-auto}"
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validate_job_name "${TRAIN_JOB_NAME}"
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if [[ "${TRAIN_GPU_COUNT}" == "all" ]]; then
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TRAIN_GPU_COUNT="$(python -c 'import torch; print(torch.cuda.device_count())')"
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fi
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[[ "${TRAIN_GPU_COUNT}" =~ ^[1-9][0-9]*$ ]] || die "No visible GPU found"
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if [[ "${TRAIN_PARALLEL_MODE}" == "auto" ]]; then
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if (( TRAIN_GPU_COUNT > 1 )); then
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TRAIN_PARALLEL_MODE=ddp
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else
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TRAIN_PARALLEL_MODE=none
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fi
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fi
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[[ "${TRAIN_PARALLEL_MODE}" =~ ^(none|ddp|fsdp)$ ]] || die "Invalid parallel mode: ${TRAIN_PARALLEL_MODE}"
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if [[ "${TRAIN_PARALLEL_MODE}" == "none" ]] && (( TRAIN_GPU_COUNT != 1 )); then
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die "Parallel mode none requires exactly one GPU"
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fi
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if [[ "${TRAIN_PARALLEL_MODE}" != "none" ]] && (( TRAIN_GPU_COUNT < 2 )); then
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die "Parallel mode ${TRAIN_PARALLEL_MODE} requires at least two GPUs"
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fi
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if [[ -n "${TRAIN_CONFIG}" ]]; then
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[[ -f "${TRAIN_CONFIG}" ]] || die "Training config not found: ${TRAIN_CONFIG}"
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fi
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[[ -r /data ]] || die "Training data directory is not readable: /data"
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mkdir -p "${CHECKPOINT_DIR}"
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[[ -w "${CHECKPOINT_DIR}" ]] || die "Checkpoint directory is not writable: ${CHECKPOINT_DIR}"
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latest_checkpoint="$(find_latest_checkpoint "${CHECKPOINT_DIR}" || true)"
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train_args=(
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python scripts/tools/train.py
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--ckpt_dir "${CHECKPOINT_DIR}"
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--nprocs "${TRAIN_GPU_COUNT}"
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)
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if [[ -n "${TRAIN_CONFIG}" ]]; then
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train_args+=(--config "${TRAIN_CONFIG}")
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fi
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train_args+=(--parallel_mode "${TRAIN_PARALLEL_MODE}")
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if [[ -n "${latest_checkpoint}" ]]; then
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log_info "Resuming ${TRAIN_JOB_NAME} from ${latest_checkpoint}"
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train_args+=(--param_path "${latest_checkpoint}" --resume)
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else
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[[ -s "${BASE_MODEL}/config.json" ]] || die "Base model config not found: ${BASE_MODEL}/config.json"
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[[ -s "${BASE_MODEL}/model.safetensors" ]] || die "Base model weights not found: ${BASE_MODEL}/model.safetensors"
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log_info "Starting ${TRAIN_JOB_NAME} from ${BASE_MODEL}"
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train_args+=(--param_path "${BASE_MODEL}")
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fi
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log_info "GPUs=${TRAIN_GPU_COUNT}, parallel=${TRAIN_PARALLEL_MODE}, checkpoints=${CHECKPOINT_DIR}"
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# Replace the shell so the container init forwards SIGTERM to the trainer.
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exec "${train_args[@]}" "$@"
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