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Optimize calibrate_draft_vocab to read only required lines when calib… #618

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Optimize calibrate_draft_vocab to read only required lines when calib…
Nov 27, 2025
cdd0be5
Merge branch 'main' into feature/optimize-calibrate-vocab-reading
Ofir408 Dec 1, 2025
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6 changes: 3 additions & 3 deletions examples/speculative_decoding/scripts/calibrate_draft_vocab.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
import argparse
import json
import os
from itertools import islice

import torch
from transformers import AutoTokenizer
Expand Down Expand Up @@ -47,9 +48,8 @@ def main():
print("Calibrating vocab...")
tokenizer = AutoTokenizer.from_pretrained(args.model)
with open(args.data) as f:
conversations = [json.loads(line)["conversations"] for line in f]
if args.calibrate_size:
conversations = conversations[: args.calibrate_size]
lines = islice(f, args.calibrate_size) if args.calibrate_size else f
conversations = [json.loads(line)["conversations"] for line in lines]
conversations = [item for sublist in conversations for item in sublist]

d2t = calibrate_frequent_vocab(tokenizer, conversations, args.draft_vocab_size)
Expand Down