Fix issues related to torch device lookup for non-CUDA GPU devices, c…

…loses #551

src/python/txtai/pipeline/hfmodel.py

@@ -31,7 +31,7 @@ def __init__(self, path=None, quantize=False, gpu=False, batch=64):
 
         # Get tensor device reference
         self.deviceid = Models.deviceid(gpu)
-        self.device = Models.reference(self.deviceid)
+        self.device = Models.device(self.deviceid)
 
         # Process batch size
         self.batchsize = batch

src/python/txtai/pipeline/hfpipeline.py

@@ -36,8 +36,9 @@ def __init__(self, task, path=None, quantize=False, gpu=False, model=None, **kwa
             # Check if input model is a Pipeline or a HF pipeline
             self.pipeline = model.pipeline if isinstance(model, HFPipeline) else model
         else:
-            # Get device id
+            # Get device
             deviceid = Models.deviceid(gpu) if "device_map" not in kwargs else None
+            device = Models.device(deviceid) if deviceid is not None else None
 
             # Split into model args, pipeline args
             modelargs, kwargs = self.parseargs(**kwargs)
@@ -50,9 +51,9 @@ def __init__(self, task, path=None, quantize=False, gpu=False, model=None, **kwa
                 # Load model
                 model = Models.load(path[0], config, task)
 
-                self.pipeline = pipeline(task, model=model, tokenizer=path[1], device=deviceid, model_kwargs=modelargs, **kwargs)
+                self.pipeline = pipeline(task, model=model, tokenizer=path[1], device=device, model_kwargs=modelargs, **kwargs)
             else:
-                self.pipeline = pipeline(task, model=path, device=deviceid, model_kwargs=modelargs, **kwargs)
+                self.pipeline = pipeline(task, model=path, device=device, model_kwargs=modelargs, **kwargs)
 
             # Model quantization. Compresses model to int8 precision, improves runtime performance. Only supported on CPU.
             if deviceid == -1 and quantize:

src/python/txtai/vectors/transformers.py

@@ -41,7 +41,7 @@ def load(self, path):
             raise ImportError('sentence-transformers is not available - install "similarity" extra to enable')
 
         # Build embeddings with sentence-transformers
-        return SentenceTransformer(path, device=Models.reference(deviceid))
+        return SentenceTransformer(path, device=Models.device(deviceid))
 
     def encode(self, data):
         # Encode data using vectors model