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fix cuda device not found error when LLM is initialized in ray actor #3198

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fix cuda device not found error when LLM is initialized in ray actor #3198

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14 changes: 2 additions & 12 deletions vllm/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -495,18 +495,8 @@ def _verify_args(self) -> None:

class DeviceConfig:

def __init__(self, device: str = "auto") -> None:
if device == "auto":
# Automated device type detection
if torch.cuda.is_available():
self.device_type = "cuda"
elif is_neuron():
self.device_type = "neuron"
else:
raise RuntimeError("No supported device detected.")
else:
# Device type is assigned explicitly
self.device_type = device
def __init__(self, device: str = "cuda") -> None:
self.device_type = device

# Some device types require processing inputs on CPU
if self.device_type in ["neuron"]:
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4 changes: 2 additions & 2 deletions vllm/engine/arg_utils.py
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Expand Up @@ -46,7 +46,7 @@ class EngineArgs:
lora_extra_vocab_size: int = 256
lora_dtype = 'auto'
max_cpu_loras: Optional[int] = None
device: str = 'auto'
device: str = 'cuda'
ray_workers_use_nsight: bool = False

def __post_init__(self):
Expand Down Expand Up @@ -285,7 +285,7 @@ def add_cli_args(
parser.add_argument("--device",
type=str,
default=EngineArgs.device,
choices=["auto", "cuda", "neuron"],
choices=["cuda", "neuron"],
help='Device type for vLLM execution.')
return parser

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