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Improve HF download speed #1899

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merged 3 commits into from
Jan 8, 2025
Merged

Improve HF download speed #1899

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7c27a1e
Improve HF download speed
rasbt Jan 7, 2025
ce5d0fe
Update litgpt/scripts/download.py
rasbt Jan 7, 2025
d1103db
update pr
rasbt Jan 7, 2025
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17 changes: 10 additions & 7 deletions litgpt/scripts/download.py
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Original file line number Diff line number Diff line change
Expand Up @@ -70,14 +70,17 @@ def download_from_hub(
else:
raise ValueError(f"Couldn't find weight files for {repo_id}")

# Get and set env variable to improve download speed
user_env_value = os.environ.get("HF_HUB_ENABLE_HF_TRANSFER")

if user_env_value is None:
os.environ["HF_HUB_ENABLE_HF_TRANSFER"] = "1"
print("Setting HF_HUB_ENABLE_HF_TRANSFER=1 by default")

import huggingface_hub._snapshot_download as download
import huggingface_hub.constants as constants

previous = constants.HF_HUB_ENABLE_HF_TRANSFER
if _HF_TRANSFER_AVAILABLE and not previous:
print("Setting HF_HUB_ENABLE_HF_TRANSFER=1")
constants.HF_HUB_ENABLE_HF_TRANSFER = True
download.HF_HUB_ENABLE_HF_TRANSFER = True
previous_flag = constants.HF_HUB_ENABLE_HF_TRANSFER # this may be redundant
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directory = checkpoint_dir / repo_id
with gated_repo_catcher(repo_id, access_token):
Expand All @@ -88,8 +91,8 @@ def download_from_hub(
token=access_token,
)

constants.HF_HUB_ENABLE_HF_TRANSFER = previous
download.HF_HUB_ENABLE_HF_TRANSFER = previous
constants.HF_HUB_ENABLE_HF_TRANSFER = previous_flag
download.HF_HUB_ENABLE_HF_TRANSFER = previous_flag

if convert_checkpoint and not tokenizer_only:
print("Converting checkpoint files to LitGPT format.")
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