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add num_device check for set_auto_device_map_for_block_with_tuning #1021

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Merged
merged 1 commit into from
Nov 12, 2025
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add num_device check for set_auto_device_map_for_block_with_tuning #1021

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16 changes: 9 additions & 7 deletions auto_round/utils/device.py
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Original file line number Diff line number Diff line change
Expand Up @@ -987,20 +987,22 @@ def set_auto_device_map_for_block_with_tuning(
Note:
This function is intended for internal use in device memory management and tuning.
"""
if not (device_map == "auto" or ((isinstance(device_map, str) and "," in device_map))):
block = block.to(output_device)
card_0_in_high_risk = False # card 0 contains weight, clear_memory will not help much
loss_device = output_device
return card_0_in_high_risk, loss_device

card_0_in_high_risk, loss_device = False, output_device
if torch.cuda.is_available():
num_devices = torch.cuda.device_count()
device_name = "cuda"
elif torch.xpu.is_available():
num_devices = torch.xpu.device_count()
device_name = "xpu"
else:
return
return card_0_in_high_risk, loss_device

if not (
device_map == "auto" or ((isinstance(device_map, str) and "," in device_map)) or num_devices > 1
): # Only 1 card is available or non-auto device map
block = block.to(output_device)
return card_0_in_high_risk, loss_device

device_list = None
if isinstance(device_map, str) and "," in device_map:
device_list = [int(dev) for dev in device_map.split(",") if dev.isdigit()]
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