Cant Run VLLM using https://github.com/vllm-project/vllm/blob/main/benchmarks/README.md

[SSWAMIN1SSS]

Installed VLLM from source : https://github.com/vllm-project/vllm/blob/main/README.md#getting-started
Tried running Benchmark offline by following the link : https://github.com/vllm-project/vllm/blob/main/benchmarks/README.md#example---offline-throughput-benchmark .
Even after installing datasets, i was getting
Traceback (most recent call last):
File "vllm/benchmarks/benchmark_throughput.py", line 608, in
main(args)
File "vllm/benchmarks/benchmark_throughput.py", line 362, in main
elapsed_time, request_outputs = run_vllm(
File "vllm/benchmarks/benchmark_throughput.py", line 39, in run_vllm
llm = LLM(**dataclasses.asdict(engine_args))
File ".local/lib/python3.10/site-packages/vllm/utils.py", line 1031, in inner
return fn(*args, **kwargs)
File ".local/lib/python3.10/site-packages/vllm/entrypoints/llm.py", line 242, in init
self.llm_engine = LLMEngine.from_engine_args(
File ".local/lib/python3.10/site-packages/vllm/engine/llm_engine.py", line 513, in from_engine_args
vllm_config = engine_args.create_engine_config(usage_context)
File ".local/lib/python3.10/site-packages/vllm/engine/arg_utils.py", line 1205, in create_engine_config
device_config = DeviceConfig(device=self.device)
File ".local/lib/python3.10/site-packages/vllm/config.py", line 1798, in init
raise RuntimeError("Failed to infer device type")
RuntimeError: Failed to infer device type

Can anyone help me in resolving it