[Platform] Let EPD work with non-cuda platform (#30225)

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

vllm/distributed/ec_transfer/ec_connector/example_connector.py

@@ -73,6 +73,7 @@ class ECExampleConnector(ECConnectorBase):
                 data hashes (`mm_hash`) to encoder cache tensors.
             kwargs (dict): Additional keyword arguments for the connector.
         """
+        from vllm.platforms import current_platform
 
         # Get the metadata
         metadata: ECConnectorMetadata = self._get_connector_metadata()
@@ -91,7 +92,9 @@ class ECExampleConnector(ECConnectorBase):
             if mm_data.mm_hash in encoder_cache:
                 continue
             filename = self._generate_filename_debug(mm_data.mm_hash)
-            ec_cache = safetensors.torch.load_file(filename)["ec_cache"].cuda()
+            ec_cache = safetensors.torch.load_file(
+                filename, device=current_platform.device_type
+            )["ec_cache"]
             encoder_cache[mm_data.mm_hash] = ec_cache
             logger.debug("Success load encoder cache for hash %s", mm_data.mm_hash)