Add initial oneAPI support

tortoise/api.py

@@ -680,9 +680,17 @@ class TextToSpeech:
             auto_conditioning = migrate_to_device( auto_conditioning, self.device )
             text_tokens = migrate_to_device( text_tokens, self.device )
 
-            with torch.autocast(device_type='cuda', dtype=torch.float16, enabled=half_p):
+            if self.device.type == 'xpu': # The following autocasts were hardcoded for CUDA
+                _device_type = 'xpu'
+                _dtype = torch.bfloat16 # float16 support for oneAPI was missing / is worse?
+            else:
+                _device_type = 'cuda' # Should these be changed to just use the device directly? Unsure how this will do for dml/rocm
+                _dtype = torch.float16
+
+            with torch.autocast(device_type=_device_type, dtype=_dtype, enabled=half_p):
                 for b in tqdm_override(range(num_batches), verbose=verbose, progress=progress, desc="Generating autoregressive samples"):
                     check_for_kill_signal()
+                    do_gc() # oneAPI VRAM
                     codes = self.autoregressive.inference_speech(auto_conditioning, text_tokens,
                                                                  do_sample=True,
                                                                  top_p=top_p,
@@ -710,7 +718,7 @@ class TextToSpeech:
             if auto_conds is not None:
                 auto_conditioning = migrate_to_device( auto_conditioning, self.device )
 
-            with torch.autocast(device_type='cuda', dtype=torch.float16, enabled=half_p):
+            with torch.autocast(device_type=_device_type, dtype=_dtype, enabled=half_p):
                 if not self.preloaded_tensors:
                     self.autoregressive = migrate_to_device( self.autoregressive, 'cpu' )
                     self.clvp = migrate_to_device( self.clvp, self.device )

tortoise/models/diffusion_decoder.py

@@ -309,7 +309,11 @@ class DiffusionTts(nn.Module):
             else:
                 # First and last blocks will have autocast disabled for improved precision.
                 # x.device.type
-                with autocast(device_type='cuda', enabled=self.enable_fp16 and i != 0):
+                if self.device.type == 'xpu': # The following autocast was hardcoded for CUDA
+                    _device_type = 'xpu'
+                else:
+                    _device_type = 'cuda' # Should these be changed to just use the device directly? Unsure how this will do for dml/rocm
+                with autocast(device_type=_device_type, enabled=self.enable_fp16 and i != 0):
                     x = lyr(x, time_emb)
 
         x = x.float()

tortoise/utils/device.py

@@ -8,6 +8,10 @@ DEVICE_BATCH_SIZE_MAP = [(14, 16), (10,8), (7,4)]
 from inspect import currentframe, getframeinfo
 import gc
 
+def xpu_get_mem(device=0):
+    total_memory = ipex.xpu.get_device_properties(device).total_memory
+    return total_memory, total_memory - torch.xpu.memory_allocated(device)
+
 def do_gc():
     gc.collect()
     try:
@@ -15,6 +19,11 @@ def do_gc():
     except Exception as e:
         pass
 
+    try:
+        torch.xpu.empty_cache()
+    except Exception as e:
+        pass
+
 def print_stats(collect=False):
     cf = currentframe().f_back
     msg = f'{getframeinfo(cf).filename}:{cf.f_lineno}'
@@ -36,6 +45,16 @@ def has_dml():
     import torch_directml
     return torch_directml.is_available()
 
+def has_ipex():
+    loader = importlib.find_loader('intel_extension_for_pytorch')
+    if loader is None:
+        return False
+    
+    import intel_extension_for_pytorch
+    global ipex
+    ipex = intel_extension_for_pytorch # Could doing this over and over be an issue?
+    return torch.xpu.is_available()
+
 def set_device_name(name):
     global DEVICE_OVERRIDE
     DEVICE_OVERRIDE = name
@@ -51,6 +70,10 @@ def get_device_name(attempt_gc=True):
         name = 'cuda'
         if attempt_gc:
             torch.cuda.empty_cache() # may have performance implications
+    elif has_ipex():
+        name = 'xpu'
+        if attempt_gc:
+            torch.xpu.empty_cache()
     elif has_dml():
         name = 'dml'
 
@@ -76,6 +99,8 @@ def get_device_vram( name=get_device_name() ):
 
     if name == "cuda":
         _, available = torch.cuda.mem_get_info()
+    elif name == "xpu":
+        _, available = xpu_get_mem()
     elif name == "cpu":
         available = psutil.virtual_memory()[4]
 

tortoise/utils/diffusion.py

@@ -1271,7 +1271,10 @@ def _extract_into_tensor(arr, timesteps, broadcast_shape):
                             dimension equal to the length of timesteps.
     :return: a tensor of shape [batch_size, 1, ...] where the shape has K dims.
     """
-    res = th.from_numpy(arr).to(device=timesteps.device)[timesteps].float()
+    if timesteps.device.type == 'xpu': # TODO: Arc currently does not support FP64 broadly, and this will change eventually. Remove when this happens?
+        res = th.from_numpy(arr).float().to(device=timesteps.device)[timesteps]
+    else:
+        res = th.from_numpy(arr).to(device=timesteps.device)[timesteps].float()
     while len(res.shape) < len(broadcast_shape):
         res = res[..., None]
     return res.expand(broadcast_shape)