#!/bin/bash

export HSA_FORCE_FINE_GRAIN_PCIE=1
export MIOPEN_FIND_MODE=3

MODEL_NAME=gpt2-4tp
DATA_OUTPUT_PATH=./
LOGS_PATH=$DATA_OUTPUT_PATH/logs
CHECKPOINT_PATH=output-module/$MODEL_NAME
DATA_PATH="my-gpt2_text_document"

TENSORBOARD_PATH=output_dir/tensorboard/$MODEL_NAME
CODECARBON_PATH=output_dir/codecarbon/$MODEL_NAME

N_GPUS=8

TP_SIZE=4   # always fixed to the size of a single node
PP_SIZE=1 #128 #96    # NLAYERS must be a multiple of PP_SIZE here


MICRO_BATCH_SIZE=2
GLOBAL_BATCH_SIZE=32 #256 #1536
NLAYERS=24
NHIDDEN=1024 #12480
NHEADS=16
SEQ_LEN=1024
SAVE_INTERVAL=200

#rampup-batch-size 16 16 5859375
OPTIMIZER_ARGS=" \
    --optimizer adam \
    --adam-beta1 0.9 \
    --adam-beta2 0.95 \
    --adam-eps 1e-8 \
    --lr 6.0e-5 \
    --min-lr 6.0e-6 \
    --lr-decay-style cosine \
    --clip-grad 1.0 \
    --weight-decay 1e-1 \
    "


GPT_ARGS=" \
    --num-layers $NLAYERS \
    --hidden-size $NHIDDEN \
    --num-attention-heads $NHEADS \
    --seq-length $SEQ_LEN \
    --max-position-embeddings $SEQ_LEN \
    --micro-batch-size $MICRO_BATCH_SIZE \
    --global-batch-size $GLOBAL_BATCH_SIZE \
    --train-samples  3782590 \
    --loss-scale 12 \
    --vocab-file gpt2-vocab.json \
    --merge-file gpt2-merges.txt \
    --clip-grad 1.0 \
    --fp16 \
    --checkpoint-activations \
    --seed 42
    $OPTIMIZER_ARGS \
    "

OUTPUT_ARGS=" \
    --log-interval 1 \
    --save-interval $SAVE_INTERVAL \
    --eval-interval 1000 \
    --eval-iters 40 \
    --tensorboard-dir $TENSORBOARD_PATH \
    --tensorboard-queue-size 5 \
    --log-timers-to-tensorboard \
    --log-batch-size-to-tensorboard \
    --log-validation-ppl-to-tensorboard \
    "

DATA_ARGS=" \
    --save $CHECKPOINT_PATH \
    --load $CHECKPOINT_PATH \
    --data-path $DATA_PATH \
    "
ZERO_STAGE=1
config_json="./${MODEL_NAME}_ds_config.json"

cat <<EOT > $config_json
{
  "train_micro_batch_size_per_gpu": $MICRO_BATCH_SIZE,
  "train_batch_size": $GLOBAL_BATCH_SIZE,
  "gradient_clipping": 1.0,
  "zero_optimization": {
    "stage": $ZERO_STAGE
  },
  "fp16": {
    "enabled": true,
    "loss_scale": 0,
    "loss_scale_window": 500,
    "hysteresis": 2,
    "min_loss_scale": 1,
    "initial_scale_power": 12
  },
  "steps_per_print": 2000,
  "wall_clock_breakdown": false
}
EOT

DEEPSPEED_ARGS=" \
    --deepspeed \
    --deepspeed_config ${config_json} \
    --zero-stage ${ZERO_STAGE} \
    --deepspeed-activation-checkpointing \
    "
export CMD="pretrain_gpt.py \
    --tensor-model-parallel-size $TP_SIZE \
    --pipeline-model-parallel-size $PP_SIZE \
    $GPT_ARGS \
    $DATA_ARGS \
    $OUTPUT_ARGS \
    --data-impl mmap \
    --split 949,50,1 \
    --distributed-backend nccl \
     $DEEPSPEED_ARGS \
    "

deepspeed --num_gpus $N_GPUS $CMD
