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#!/bin/bash

# ํ•œ๊ตญ์–ด ํ•™์Šต ๋ฐ์ดํ„ฐ ํ˜„ํ™ฉ ํ™•์ธ ์Šคํฌ๋ฆฝํŠธ
# ์šฉ๋„: ํ•œ๊ตญ์–ด ๋ฐ์ดํ„ฐ์…‹ ์ƒํƒœ, ํ† ํฌ๋‚˜์ด์ €, ์›๋ณธ ๋ฐ์ดํ„ฐ ํŒŒ์ผ ํ™•์ธ

set -e

# ํ”„๋กœ์ ํŠธ ๋ฃจํŠธ (์ด ์Šคํฌ๋ฆฝํŠธ ์‹คํ–‰ ์œ„์น˜ ๊ธฐ์ค€)
PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "${PROJECT_ROOT}"

echo "=== ํ•œ๊ตญ์–ด ํ•™์Šต ๋ฐ์ดํ„ฐ ํ˜„ํ™ฉ ==="
echo ""

# ============================================================================
# 1. ํ•™์Šต์šฉ ๋ฐ”์ด๋„ˆ๋ฆฌ ๋ฐ์ดํ„ฐ ํ™•์ธ
# ============================================================================
echo "[ ํ•™์Šต ๋ฐ”์ด๋„ˆ๋ฆฌ ๋ฐ์ดํ„ฐ ]"

check_binary_data() {
    local file=$1
    local name=$2

    if [ -f "$file" ]; then
        local size=$(du -h "$file" | cut -f1)

        # Python + numpy memmap์œผ๋กœ ํ† ํฐ ์ˆ˜ ๊ณ„์‚ฐ
        # ๋ฐ”์ด๋„ˆ๋ฆฌ๋Š” uint32 ํ˜•ํƒœ๋กœ ์ €์žฅ๋˜์–ด ์žˆ์Œ (4 bytes per token)
        local token_count=$(python3 -c "
import numpy as np
try:
    data = np.memmap('$file', dtype=np.uint32, mode='r')
    print(len(data))
except Exception as e:
    print('error')
" 2>/dev/null || echo "error")

        if [ "$token_count" != "error" ] && [ ! -z "$token_count" ]; then
            # ํ† ํฐ ์ˆ˜๋ฅผ ํฌ๋งทํŒ… (์ฒœ ๋‹จ์œ„ ์‰ผํ‘œ)
            local formatted_tokens=$(printf "%'d" "$token_count")

            # 1B ๋ชจ๋ธ ํ•™์Šต ์Šคํ… ๊ณ„์‚ฐ
            # tokens_per_step = batch_size * grad_accum * seq_len * num_gpus
            #                 = 8 * 4 * 4096 * 8 = 1,048,576 tokens/step
            local tokens_per_step=1048576
            local estimated_steps=$((token_count / tokens_per_step))

            printf "  %-20s : ์กด์žฌ (%s, %'d ํ† ํฐ, ~%'d steps)\n" \
                "$name" "$size" "$token_count" "$estimated_steps"
        else
            printf "  %-20s : ์กด์žฌ (%s, ํ† ํฐ ๊ณ„์‚ฐ ์‹คํŒจ)\n" "$name" "$size"
        fi
    else
        printf "  %-20s : ์—†์Œ\n" "$name"
    fi
}

check_binary_data "data/korean_train.bin" "korean_train.bin"
check_binary_data "data/korean_val.bin" "korean_val.bin"
check_binary_data "data/train.bin" "train.bin"
check_binary_data "data/val.bin" "val.bin"

echo ""

# ============================================================================
# 2. ํ† ํฌ๋‚˜์ด์ € ํ™•์ธ
# ============================================================================
echo "[ ํ† ํฌ๋‚˜์ด์ € ]"

check_tokenizer() {
    local dir=$1
    local name=$2

    if [ -d "$dir" ]; then
        local files=$(find "$dir" -type f | wc -l)
        printf "  %-20s : ์กด์žฌ (%d๊ฐœ ํŒŒ์ผ)\n" "$name" "$files"
    else
        printf "  %-20s : ์—†์Œ\n" "$name"
    fi
}

check_tokenizer "tokenizer/korean_sp" "korean_sp"
check_tokenizer "tokenizer" "default tokenizer"

echo ""

# ============================================================================
# 3. ์›๋ณธ ๋ฐ์ดํ„ฐ ๋””๋ ‰ํ† ๋ฆฌ ํ™•์ธ
# ============================================================================
echo "[ ์›๋ณธ ๋ฐ์ดํ„ฐ ]"

check_raw_data() {
    local dir=$1
    local name=$2

    if [ -d "$dir" ]; then
        local file_count=$(find "$dir" -maxdepth 1 -type f | wc -l)
        local total_size=$(du -sh "$dir" 2>/dev/null | cut -f1)

        if [ $file_count -eq 0 ]; then
            printf "  %-20s : ์—†์Œ (๋””๋ ‰ํ† ๋ฆฌ๋งŒ ์กด์žฌ, 0 ํŒŒ์ผ)\n" "$name"
        else
            printf "  %-20s : %'d ํŒŒ์ผ (%s)\n" "$name" "$file_count" "$total_size"
        fi
    else
        printf "  %-20s : ์—†์Œ\n" "$name"
    fi
}

check_raw_data "data/raw/cc100_ko" "cc100_ko/"
check_raw_data "data/raw/c4_ko" "c4_ko/"
check_raw_data "data/raw/namuwiki_ko" "namuwiki_ko/"

# ์œ„ํ‚ค ๋ฐ์ดํ„ฐ๋Š” raw/ ์ง์ ‘ ํ•˜์œ„
echo ""
echo "[ ์œ„ํ‚คํ”ผ๋””์•„ ๋ฐ์ดํ„ฐ ]"
ko_wiki_count=$(find "data/raw" -maxdepth 1 -name "ko_wiki_*.txt" | wc -l)
en_wiki_count=$(find "data/raw" -maxdepth 1 -name "en_wiki_*.txt" | wc -l)
ko_wiki_size=$(du -sh "data/raw" 2>/dev/null | cut -f1)

if [ $ko_wiki_count -gt 0 ]; then
    printf "  %-20s : %'d ํŒŒ์ผ\n" "ko_wiki" "$ko_wiki_count"
fi

if [ $en_wiki_count -gt 0 ]; then
    printf "  %-20s : %'d ํŒŒ์ผ\n" "en_wiki" "$en_wiki_count"
fi

echo ""

# ============================================================================
# 4. ์ข…ํ•ฉ ์ƒํƒœ ์š”์•ฝ
# ============================================================================
echo "[ ์ข…ํ•ฉ ์ƒํƒœ ]"

# ํ•™์Šต์šฉ ๋ฐ”์ด๋„ˆ๋ฆฌ ๋ฐ์ดํ„ฐ ํ™•์ธ
binary_ready=false
if [ -f "data/korean_train.bin" ] && [ -f "data/korean_val.bin" ]; then
    binary_ready=true
elif [ -f "data/train.bin" ] && [ -f "data/val.bin" ]; then
    binary_ready=true
fi

# ํ† ํฌ๋‚˜์ด์ € ํ™•์ธ
tokenizer_ready=false
if [ -d "tokenizer/korean_sp" ] && [ -f "tokenizer/korean_sp/tokenizer.model" ]; then
    tokenizer_ready=true
fi

# ์›๋ณธ ๋ฐ์ดํ„ฐ ํ™•์ธ
raw_ready=false
if [ -d "data/raw/c4_ko" ] || [ -d "data/raw/namuwiki_ko" ] || [ -d "data/raw/cc100_ko" ]; then
    count=$(find "data/raw/c4_ko" -maxdepth 1 -type f 2>/dev/null | wc -l)
    count=$((count + $(find "data/raw/namuwiki_ko" -maxdepth 1 -type f 2>/dev/null | wc -l)))
    count=$((count + $(find "data/raw/cc100_ko" -maxdepth 1 -type f 2>/dev/null | wc -l)))
    if [ $count -gt 0 ]; then
        raw_ready=true
    fi
fi

printf "  ํ•™์Šต์šฉ ๋ฐ”์ด๋„ˆ๋ฆฌ     : %s\n" "$([ "$binary_ready" = true ] && echo "โœ“ ์ค€๋น„๋จ" || echo "โœ— ๋ฏธ์ค€๋น„")"
printf "  ํ† ํฌ๋‚˜์ด์ €          : %s\n" "$([ "$tokenizer_ready" = true ] && echo "โœ“ ์ค€๋น„๋จ" || echo "โœ— ๋ฏธ์ค€๋น„")"
printf "  ์›๋ณธ ๋ฐ์ดํ„ฐ         : %s\n" "$([ "$raw_ready" = true ] && echo "โœ“ ์ค€๋น„๋จ" || echo "โœ— ๋ฏธ์ค€๋น„")"

echo ""

# ============================================================================
# 5. ํ•™์Šต ์„ค์ • ํŒŒ๋ผ๋ฏธํ„ฐ ์ •๋ณด
# ============================================================================
echo "[ ํ•™์Šต ์„ค์ • (1B ๋ชจ๋ธ ๊ธฐ์ค€) ]"
echo "  ๋ฐฐ์น˜ ์‚ฌ์ด์ฆˆ         : 8"
echo "  ์‹œํ€€์Šค ๊ธธ์ด         : 4096"
echo "  GPU ์ˆ˜              : 8"
echo "  ๊ทธ๋ž˜๋””์–ธํŠธ ๋ˆ„์      : 4"
echo "  ํ† ํฐ/์Šคํ…           : 8 ร— 4 ร— 4096 ร— 8 = 1,048,576"
echo ""

echo "=== ๊ฒ€์‚ฌ ์™„๋ฃŒ ==="