File size: 3,739 Bytes
48ecd01 | 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | #!/usr/bin/env bash
# =============================================================================
# launch_sft.sh — 8-GPU FP8 SFT launcher for 1B Korean LLM
#
# Usage:
# bash scripts/launch_sft.sh
# bash scripts/launch_sft.sh --max_steps 500 # quick test
# bash scripts/launch_sft.sh --resume checkpoints/korean_1b_sft/checkpoint-0001000
#
# Base model: checkpoints/korean_1b_fp8_run1/checkpoint-0034000
# SFT data: data/sft/train.jsonl
# =============================================================================
set -euo pipefail
# ---- Configurable defaults --------------------------------------------------
RUN_NAME="${RUN_NAME:-korean_1b_sft}"
BASE_CHECKPOINT="${BASE_CHECKPOINT:-checkpoints/korean_1b_fp8_run1/checkpoint-0034000}"
SFT_DATA="${SFT_DATA:-data/sft/train.jsonl}"
VAL_DATA="${VAL_DATA:-data/sft/val.jsonl}"
CKPT_DIR="checkpoints/${RUN_NAME}"
LOG_FILE="${CKPT_DIR}/train.log"
NPROC=8
MASTER_PORT="${MASTER_PORT:-29502}"
MAX_STEPS=9000
BATCH_SIZE=4
GRAD_ACCUM=2
LR="2.0e-5"
WARMUP_STEPS=300
SEED=42
EXTRA_ARGS="$@"
# ---- B200 / NVSwitch NCCL tuning (same as pretrain) -------------------------
export NCCL_IB_DISABLE=1
export NCCL_ALGO=Ring
export NCCL_PROTO=Simple
export NCCL_MIN_NCHANNELS=16
export NCCL_MAX_NCHANNELS=16
export NCCL_BUFFSIZE=67108864
export OMP_NUM_THREADS=4
export MKL_NUM_THREADS=4
cd "$(dirname "$0")/.."
# ---- Pre-flight checks ------------------------------------------------------
if [[ ! -d "${BASE_CHECKPOINT}" ]]; then
echo "ERROR: Base checkpoint not found: ${BASE_CHECKPOINT}"
exit 1
fi
if [[ ! -f "${SFT_DATA}" ]]; then
echo "=================================================================="
echo " ERROR: SFT training data not found: ${SFT_DATA}"
echo ""
echo " Run the data preparation script first:"
echo " python data/prepare_sft_data.py"
echo "=================================================================="
exit 1
fi
mkdir -p "${CKPT_DIR}"
echo "=================================================================="
echo " SFT Fine-Tuning"
echo " Run name : ${RUN_NAME}"
echo " Base checkpoint : ${BASE_CHECKPOINT}"
echo " SFT data : ${SFT_DATA}"
echo " CKPT dir : ${CKPT_DIR}"
echo " Log file : ${LOG_FILE}"
echo " Max steps : ${MAX_STEPS}"
echo " Batch size : ${BATCH_SIZE} (local) × ${NPROC} GPU × ${GRAD_ACCUM} grad_accum"
echo " Learning rate : ${LR}"
echo " Warmup : ${WARMUP_STEPS} steps"
echo " Master port : ${MASTER_PORT}"
echo " Started : $(date)"
echo "=================================================================="
export PYTHONWARNINGS="ignore::UserWarning:torch.library"
torchrun \
--nproc_per_node=${NPROC} \
--master_port=${MASTER_PORT} \
train/sft.py \
--base_checkpoint "${BASE_CHECKPOINT}" \
--sft_data "${SFT_DATA}" \
--checkpoint_dir "${CKPT_DIR}" \
--log_file "${LOG_FILE}" \
--max_steps ${MAX_STEPS} \
--batch_size ${BATCH_SIZE} \
--grad_accum ${GRAD_ACCUM} \
--lr ${LR} \
--warmup_steps ${WARMUP_STEPS} \
--seed ${SEED} \
--use_fp8 \
--val_data "${VAL_DATA}" \
${EXTRA_ARGS} \
2>&1 | grep -v "UserWarning" \
| grep -v "Warning only once" \
| grep -v "Overriding a previously" \
| grep -v "dispatch key:" \
| grep -v "previous kernel:" \
| grep -v "new kernel:" \
| grep -v "operator: flash_attn" \
| grep -v "registered at /usr/local" \
| grep -v "self.m.impl" \
| tee -a "${LOG_FILE}"
echo "=================================================================="
echo " SFT Done : $(date)"
echo "=================================================================="
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