analyze_cc100.py

import os
from math import ceil

def calculate_shards_for_billion(file_path, target_sentences_per_shard=1_000_000_000):
    # Get file size
    file_size = os.path.getsize(file_path)
    file_size_gb = file_size / (1024**3)
    
    # Your provided metrics
    total_sentences = 12_643_262
    non_empty_sentences = 11_977_669
    total_chars = 1_508_593_606
    
    # Calculate metrics
    gb_per_million_sentences = file_size_gb / (total_sentences / 1_000_000)
    chars_per_sentence = total_chars / non_empty_sentences
    
    # Calculate how many more sentences needed for one full shard
    sentences_needed_for_shard = target_sentences_per_shard - total_sentences
    
    print("\nShard Analysis for 1B Sentences per Shard:")
    print("-" * 50)
    print(f"Current metrics:")
    print(f"- File size: {file_size_gb:.2f} GB")
    print(f"- Total sentences: {total_sentences:,}")
    print(f"- Non-empty sentences: {non_empty_sentences:,}")
    print(f"- Average characters per sentence: {chars_per_sentence:.1f}")
    print(f"- GB per million sentences: {gb_per_million_sentences:.2f}")
    
    print(f"\nFor reaching 1B sentences per shard:")
    print(f"- Additional sentences needed: {sentences_needed_for_shard:,}")
    print(f"- Scaling factor needed: {target_sentences_per_shard / total_sentences:.1f}x more data")
    
    # Estimate storage requirements
    estimated_gb_for_billion = gb_per_million_sentences * 1000  # for 1B sentences
    print(f"\nStorage estimates for 1B sentences:")
    print(f"- Estimated size needed: {estimated_gb_for_billion:.1f} GB")
    
    # Recommendations
    print(f"\nRecommendations:")
    print(f"1. You need approximately {target_sentences_per_shard / total_sentences:.1f}x more data to reach 1B sentences")
    print(f"2. Current data would be ~{(total_sentences/target_sentences_per_shard*100):.2f}% of one full shard")
    print(f"3. For a full 1B-sentence shard, you'd need to collect about {sentences_needed_for_shard:,} more sentences")

if __name__ == "__main__":
    file_path = "si.txt"
    calculate_shards_for_billion(file_path)