#!/bin/bash
set -e
ENV=$1
CURRENT_DIR="$( cd "$( dirname "$0" )" && pwd )"
MEGATRON_PATH=$( dirname $( dirname ${CURRENT_DIR}))
export PYTHONPATH=${MEGATRON_PATH}:${MEGATRON_PATH}/Megatron-LM-250328:$PYTHONPATH
export CUDA_DEVICE_MAX_CONNECTIONS=1
export TORCH_FORCE_NO_WEIGHTS_ONLY_LOAD=true # for PyTorch >= 2.6

if [ $ENV = dsw ]; then
    export CUDA_VISIBLE_DEVICES=0,1,2,3,4,5,6,7
    MASTER_ADDR=localhost
    MASTER_PORT=$(shuf -n 1 -i 10000-65535)
    NNODES=1
    NODE_RANK=0
    GPUS_PER_NODE=8
elif [ $ENV = dlc ]; then
    NNODES=${WORLD_SIZE}
    NODE_RANK=${RANK}
    GPUS_PER_NODE=${KUBERNETES_CONTAINER_RESOURCE_GPU}
fi


DISTRIBUTED_ARGS="--nproc_per_node $GPUS_PER_NODE --nnodes $NNODES --node_rank $NODE_RANK --master_addr $MASTER_ADDR --master_port $MASTER_PORT"

### BASE CONFIG ###
MODEL_SIZE=$2
BATCH_SIZE=$3
GLOBAL_BATCH_SIZE=$4
LR=$5
MIN_LR=$6
SEQ_LEN=$7
PAD_LEN=$8
PR=$9
### BASE CONFIG ###

### PARALLEL / BOOL OPTION ###
TP=${10}
PP=${11}
CP=${12}
ETP=${13}
EP=${14}
SP=${15}
DO=${16}
FL=${17}
SFT=${18}
### PARALLEL / BOOL OPTION ###

### OTHERS ###
AC=${19}
OPTIMIZER_OFFLOAD=${20}
SAVE_INTERVAL=${21}
DATASET_PATH=${22}
VALID_DATASET_PATH=${23}
PRETRAIN_CHECKPOINT_PATH=${24}

# the following two values will not be used when SFT is true
TRAIN_TOKENS=${25}
WARMUP_TOKENS=${26}
###############################

OUTPUT_BASEPATH=${27}
### OTHERS ###


if [ $FL = true ]; then
    export NVTE_FLASH_ATTN=1 NVTE_FUSED_ATTN=0
    attn_backend_option=" \
        --attention-backend flash
    "
elif [ $FL = false ]; then
    export NVTE_FLASH_ATTN=0 NVTE_FUSED_ATTN=1
    attn_backend_option=" \
        --attention-backend fused
    "
fi

if [ $MODEL_SIZE = A14B ]; then

HIDDEN_SIZE=3584
NUM_ATTENTION_HEADS=28
NUM_LAYERS=28
INTERMEDIATE_SIZE=18944
MOE_INTERMEDIATE_SIZE=2560
MAX_POSITION_EMBEDDINGS=131072
EXTRA_VOCAB_SIZE=293
NUM_KEY_VALUE_HEADS=4
ROPE_THETA=1000000
NUM_EXPERTS=64
ROUTER_TOPK=8
NUM_SHARED_EXPERTS=1
RMS_NORM_EPS=1e-6
SHARED_EXPERT_INTERMEDIATE_SIZE=20480

moe_options=" \
    --moe-grouped-gemm \
    --moe-token-dispatcher-type alltoall \
    --moe-router-topk ${ROUTER_TOPK} \
    --num-experts ${NUM_EXPERTS} \
    --expert-tensor-parallel-size ${ETP} \
    --expert-model-parallel-size ${EP} \
    --moe-ffn-hidden-size ${MOE_INTERMEDIATE_SIZE} \
    --moe-router-load-balancing-type seq_aux_loss \
    --moe-aux-loss-coeff 0.001 \
    --moe-layer-freq '([1]*28)' \
    --moe-shared-expert-intermediate-size ${SHARED_EXPERT_INTERMEDIATE_SIZE} \
    --moe-layer-recompute \
    --moe-shared-expert-overlap \
    "

fi

# Here are some configs controled by env
if [ -z ${MP_DATASET_TYPE} ];then
    MP_DATASET_TYPE="idxmap"
fi

if [ -z ${MP_AC_LAYERS} ];then
    MP_AC_LAYERS=1
fi

if [ -z ${MP_VP} ]; then
    vp_option=""
else
    vp_option=" \
        --num-layers-per-virtual-pipeline-stage ${MP_VP}"
fi

if [ -z ${MP_SFT_PACKING} ]; then
    MP_SFT_PACKING=false
fi

TP_COMM_OVERLAP=$(( ($TP > 1) ? 1 : 0 ))
comm_overlap_option="\
    --overlap-grad-reduce \
    --overlap-param-gather"


if [ $TP_COMM_OVERLAP -eq 1 ]; then
    comm_overlap_option="\
        --tp-comm-overlap \
        --overlap-grad-reduce \
        --overlap-param-gather"
fi

if [ $AC = full ]; then
    _check=$(( ($NUM_LAYERS / $PP) % ${MP_AC_LAYERS} ))
    if [ $_check != 0 ]; then
        echo "the num layers per pp rank must be a multiple of the recompute layers."
        exit -1
    fi
    activation_checkpoint_options=" \
		    --recompute-method uniform \
            --recompute-num-layers ${MP_AC_LAYERS} \
		    --recompute-granularity full"
elif [ $AC = sel ]; then
    activation_checkpoint_options=" \
        --recompute-activations"
elif [ $AC = none ]; then
    activation_checkpoint_options=" \
    "
elif [ $AC = offload ]; then
    activation_checkpoint_options=" \
		    --cpu-offloading \
		    --cpu-offloading-num-layers ${MP_AC_LAYERS}"
    if [ $TP_COMM_OVERLAP -eq 1 ]; then
        echo "Disable --overlap-grad-reduce and --overlap-param-gather when cpu offloading is on..."
        comm_overlap_option="\
            --tp-comm-overlap"
    else
        echo "Disable --overlap-grad-reduce and --overlap-param-gather when cpu offloading is on..."
        comm_overlap_option=""
    fi
fi

if [ $PR = fp16 ]; then
    pr_options=" \
		    --fp16 \
            --apply-query-key-layer-scaling"
    export NVTE_APPLY_QK_LAYER_SCALING=1
elif [ $PR = bf16 ]; then
    pr_options=" \
        --bf16"
elif [ $PR = fp8 ]; then
    pr_options=" \
        --bf16 \
        --fp8-format hybrid \
        --fp8-amax-compute-algo max \
        --fp8-amax-history-len 1024"
fi

if [ $OPTIMIZER_OFFLOAD != false ] && [ $DO = false ]; then
    echo "Offload optimizer is valid only if \$DO=true"
    DO=true
fi

if [ $DO = true ]; then
    do_option=" \
		    --use-distributed-optimizer"

elif [ $DO = false ]; then
    do_option=" \
                    "
fi


if [ $SP = true ] && [ $TP -gt 1 ]; then
    sp_option=" \
		    --sequence-parallel"

elif [ $SP = false ]; then
    sp_option=" \
                    "
fi

if [ -z ${MP_PP0_LAYERS} ];then
    uneven_split_option=""
elif [ ${PP} -gt 1 ]; then
    _check=$(( ( $NUM_LAYERS - ${MP_PP0_LAYERS} ) % ( ${PP} - 1 ) ))
    if [ $_check != 0 ]; then
        echo "With uneven pipelineing the left over layers must be divisible by left over stages."
        exit -1
    fi

    uneven_split_option=" \
        --decoder-first-pipeline-num-layers ${MP_PP0_LAYERS}
    "
else
    echo "uneven pipeline split must be used when PP > 1"
    exit -1
fi

if [ $PRETRAIN_CHECKPOINT_PATH != none ]; then
    load_option=" \
            --load $PRETRAIN_CHECKPOINT_PATH"
fi

if [ $OPTIMIZER_OFFLOAD != false ]; then
    offload_option=" \
        --optimizer-cpu-offload \
        --use-precision-aware-optimizer \
        --optimizer-offload-fraction ${OPTIMIZER_OFFLOAD}"
fi

if [ $SFT = true ]; then
    TRAIN_ITERS=${25}
    LR_WARMUP_ITERS=${26}
    LR_DECAY_ITERS=$(( ${TRAIN_ITERS} - ${LR_WARMUP_ITERS}))
    PREFIX="finetune-mcore-qwen2-megatron-${MODEL_SIZE}-lr-${LR}-minlr-${MIN_LR}-bs-${BATCH_SIZE}-gbs-${GLOBAL_BATCH_SIZE}-seqlen-${SEQ_LEN}"
    sft_options=" \
         --eod-mask-loss \
         --calculate-per-token-loss \
         --train-mode finetune"
else
    TRAIN_ITERS=$(( ${TRAIN_TOKENS} / ${GLOBAL_BATCH_SIZE} / ${SEQ_LEN} ))
    LR_WARMUP_ITERS=$(( ${WARMUP_TOKENS}  / ${GLOBAL_BATCH_SIZE} / ${SEQ_LEN} ))
    LR_DECAY_ITERS=$(( ${TRAIN_TOKENS} /  ${GLOBAL_BATCH_SIZE} / ${SEQ_LEN} ))
    PREFIX="pretrain-mcore-qwen2-megatron-${MODEL_SIZE}-lr-${LR}-minlr-${MIN_LR}-bs-${BATCH_SIZE}-gbs-${GLOBAL_BATCH_SIZE}-seqlen-${SEQ_LEN}"
    sft_options=" \
        --train-mode pretrain"
fi

if [ ${MP_DATASET_TYPE} = "raw" ]; then
    dataset_options=" \
        --train-data-path ${DATASET_PATH} \
        --valid-data-path ${VALID_DATASET_PATH} \
        --dataloader-type cyclic \
        --dataset JSON-SFT"
else 
    dataset_options=" \
        --data-path ${DATASET_PATH} \
        --split 99,1,0 \
        --dataset MMAP"
fi

if [ ${MP_SFT_PACKING} = true ]; then
    packing_options=" \
      --reset-position-ids \
      --no-create-attention-mask-in-dataloader
    "
else
    packing_options=""
fi

##### Prepare logdirs #######
NAME="${PREFIX}-pr-${PR}-tp-${TP}-pp-${PP}-cp-${CP}-ac-${AC}-do-${DO}-sp-${SP}-ti-${TRAIN_ITERS}-wi-${LR_WARMUP_ITERS}"
mkdir -p "${OUTPUT_BASEPATH}/tensorboard/"
mkdir -p "${OUTPUT_BASEPATH}/checkpoint/"
mkdir -p "${OUTPUT_BASEPATH}/log/"
current_time=$(date "+%Y.%m.%d-%H.%M.%S")
TENSORBOARD_DIR="${OUTPUT_BASEPATH}/tensorboard/${NAME}_${current_time}"
mkdir -p ${TENSORBOARD_DIR}
SAVED_PRETRAIN_CHECKPOINT_PATH="${OUTPUT_BASEPATH}/checkpoint/${NAME}"

mkdir -p ${SAVED_PRETRAIN_CHECKPOINT_PATH}
find -L ${PRETRAIN_CHECKPOINT_PATH} -maxdepth 1 -type f -name "*.json" -print0 | xargs -0 cp -t ${SAVED_PRETRAIN_CHECKPOINT_PATH}
#find -L ${PRETRAIN_CHECKPOINT_PATH} -maxdepth 1 -type f -name "merges.txt" -print0 | xargs -0 cp -t ${SAVED_PRETRAIN_CHECKPOINT_PATH}

megatron_options="  \
        --save ${SAVED_PRETRAIN_CHECKPOINT_PATH} \
        --lr ${LR} \
        --min-lr ${MIN_LR} \
        --lr-decay-style cosine \
        --weight-decay 0.01 \
        --adam-beta1 0.9 \
        --adam-beta2 0.95 \
        --clip-grad 1.0 \
        --init-method-std 0.008 \
        --attention-dropout 0.0 \
        --hidden-dropout 0.0 \
        --lr-decay-iters ${LR_DECAY_ITERS} \
        --lr-warmup-iters ${LR_WARMUP_ITERS} \
        --train-iters ${TRAIN_ITERS} \
        --micro-batch-size ${BATCH_SIZE} \
        --global-batch-size ${GLOBAL_BATCH_SIZE} \
        --num-layers ${NUM_LAYERS} \
        --hidden-size ${HIDDEN_SIZE} \
        --num-attention-heads ${NUM_ATTENTION_HEADS} \
        --ffn-hidden-size ${INTERMEDIATE_SIZE} \
        --seq-length ${SEQ_LEN} \
        --max-position-embeddings ${MAX_POSITION_EMBEDDINGS} \
        --max-padding-length ${PAD_LEN} \
        --log-interval 1 \
        --log-throughput \
        --eval-interval 10000 \
        --eval-iters 10 \
        --save-interval ${SAVE_INTERVAL} \
        --tensorboard-queue-size 1 \
        --tensorboard-dir ${TENSORBOARD_DIR} \
        --log-timers-to-tensorboard \
        --log-validation-ppl-to-tensorboard \
        --tensor-model-parallel-size ${TP} \
        --pipeline-model-parallel-size ${PP} \
        --context-parallel-size ${CP} \
        --no-load-optim \
        --no-load-rng \
        --num-workers 32 \
        --extra-vocab-size ${EXTRA_VOCAB_SIZE} \
        --patch-tokenizer-type Qwen2Tokenizer \
        --swiglu \
        --normalization RMSNorm \
        --norm-epsilon ${RMS_NORM_EPS} \
        --use-rotary-position-embeddings \
        --position-embedding-type rope \
        --untie-embeddings-and-output-weights \
        --disable-bias-linear \
        --rotary-base ${ROPE_THETA} \
        --no-save-optim \
        --ckpt-format torch \
        --transformer-impl transformer_engine \
        --group-query-attention \
        --num-query-groups ${NUM_KEY_VALUE_HEADS} \
        --add-qkv-bias \
        --cross-entropy-loss-fusion \
        "

#        --no-rope-fusion \
#        --no-bias-swiglu-fusion \


run_cmd="torchrun $DISTRIBUTED_ARGS pretrain_qwen2_moe.py
 ${megatron_options} ${dataset_options} ${pr_options} ${load_option} ${activation_checkpoint_options} \
 ${do_option} ${sp_option} ${moe_options} ${offload_option} ${sft_options} ${vp_option} ${packing_options} ${uneven_split_option} ${attn_backend_option}"

echo ${run_cmd}
eval ${run_cmd}
set +x
