under test, not sure no errors

vllm/platforms/tpu.py

@@ -0,0 +1,33 @@
+import os
+
+import torch
+
+import vllm.envs as envs
+from vllm.compilation.levels import CompilationLevel
+from vllm.plugins import set_torch_compile_backend
+
+from .interface import Platform, PlatformEnum
+
+if "VLLM_TORCH_COMPILE_LEVEL" not in os.environ:
+    os.environ["VLLM_TORCH_COMPILE_LEVEL"] = str(CompilationLevel.DYNAMO_ONCE)
+
+assert envs.VLLM_TORCH_COMPILE_LEVEL < CompilationLevel.INDUCTOR,\
+     "TPU does not support Inductor."
+
+set_torch_compile_backend("openxla")
+
+
+class TpuPlatform(Platform):
+    _enum = PlatformEnum.TPU
+
+    @classmethod
+    def get_device_name(cls, device_id: int = 0) -> str:
+        raise NotImplementedError
+
+    @classmethod
+    def get_device_total_memory(cls, device_id: int = 0) -> int:
+        raise NotImplementedError
+
+    @classmethod
+    def inference_mode(cls):
+        return torch.no_grad()