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Make it possible to define the root temporary directory for composer #3784

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Make it possible to define the root temporary directory for composer #3784

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Using TMPDIR env var as a temporary directory. If it's not set, check…
mshtelma Mar 19, 2025
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mshtelma Mar 19, 2025
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mshtelma Mar 19, 2025
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8 changes: 7 additions & 1 deletion composer/callbacks/checkpoint_saver.py
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Original file line number Diff line number Diff line change
Expand Up @@ -274,7 +274,13 @@ def __init__(

is_remote_folder = backend != ''
if is_remote_folder: # If uploading to a remote path, use a temporary directory to save local checkpoints.
local_folder = os.path.join(tempfile.mkdtemp(), local_folder)
root_temp_folder = None
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I believe this is already how mkdtemp works? https://docs.python.org/3/library/tempfile.html#tempfile.mkdtemp. The first place it should look to decide the tmpdir folder is whatever is specified by the TMPDIR env var.

if os.environ.get('TMPDIR') is not None:
root_temp_folder = os.environ.get('TMPDIR')
elif os.path.exists('/local_disk0/'): # Probably we are on MLR, so we have to use /local_disk0
root_temp_folder = '/local_disk0/temp'
os.makedirs(root_temp_folder, exist_ok=True)
local_folder = os.path.join(tempfile.mkdtemp(prefix=root_temp_folder), local_folder)

filename = str(filename)
remote_file_name = str(remote_file_name) if remote_file_name is not None else None
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