fixed a lot of things and actually got it to work

wyoming_glados/__main__.py

@@ -24,6 +24,10 @@ async def main() -> None:
                         help="Directory containing model files (config.json, *.safetensors, style_vectors.npy)")
     parser.add_argument("--device", default="cpu",
                         help="Device for PyTorch (cpu, cuda, rocm)")
+    parser.add_argument("--half", action="store_true",
+                        help="Use half-precision (float16) for GPU inference (~2x speedup)")
+    parser.add_argument("--preload", action="store_true",
+                        help="Pre-load model at startup instead of on first request")
     parser.add_argument("--debug", action="store_true",
                         help="Log DEBUG messages")
     parser.add_argument("--version", action="version",
@@ -78,6 +82,8 @@ async def main() -> None:
     _LOGGER.info("Starting GLaDOS Wyoming TTS server on %s", args.uri)
     _LOGGER.info("Model directory: %s", model_dir)
     _LOGGER.info("Device: %s", device)
+    _LOGGER.info("Half precision: %s", args.half)
+    _LOGGER.info("Preload model: %s", args.preload)
 
     server_task = asyncio.create_task(
         server.run(
@@ -86,6 +92,8 @@ async def main() -> None:
                 wyoming_info,
                 model_dir,
                 device,
+                half=args.half,
+                preload=args.preload,
             )
         )
     )

wyoming_glados/handler.py

@@ -5,6 +5,7 @@ from pathlib import Path
 from typing import Optional
 
 import numpy as np
+import torch
 from wyoming.audio import AudioChunk, AudioStart, AudioStop
 from wyoming.error import Error
 from wyoming.event import Event
@@ -20,6 +21,7 @@ _LOGGER = logging.getLogger(__name__)
 
 _VOICE_LOCK = asyncio.Lock()
 _MODEL: Optional[TTSModel] = None
+_BERT_INITIALIZED: set[Languages] = set()
 
 _BERT_MODEL_NAMES = {
     Languages.JP: "ku-nlp/deberta-v2-large-japanese-char-wwm",
@@ -31,6 +33,18 @@ _HIRAGANA_KATAKANA = re.compile(r"[\u3040-\u309F\u30A0-\u30FF]")
 _CJK = re.compile(r"[\u4E00-\u9FFF]")
 
 
+def _optimize_gpu():
+    if not torch.cuda.is_available():
+        return
+
+    torch.cuda.empty_cache = lambda: None
+    _LOGGER.info("Disabled torch.cuda.empty_cache() to prevent re-allocation on every inference")
+
+    if torch.version.hip is not None and hasattr(torch.backends, 'miopen'):
+        torch.backends.miopen.benchmark = True
+        _LOGGER.info("Enabled MIOpen benchmark mode to cache convolution solver solutions")
+
+
 def _detect_language(text: str) -> Languages:
     if _HIRAGANA_KATAKANA.search(text):
         return Languages.JP
@@ -39,18 +53,21 @@ def _detect_language(text: str) -> Languages:
     return Languages.EN
 
 
-def _load_bert_for_language(language: Languages, device: str) -> None:
+def _load_bert_for_language(language: Languages, device: str, half: bool = False) -> None:
+    if language in _BERT_INITIALIZED:
+        return
+
     model_name = _BERT_MODEL_NAMES[language]
     _LOGGER.info("Loading BERT model for %s (%s)", language.name, model_name)
     bert_models.load_model(language, model_name)
     bert_models.load_tokenizer(language, model_name)
     bert = bert_models.__loaded_models.get(language)
     if bert is not None:
-        bert = bert.float()
         bert.eval()
-        bert.to(device)
-        bert_models.__loaded_models[language] = bert
-        _LOGGER.info("BERT model for %s cast to float32 and moved to %s", language.name, device)
+        bert.to(device).float()
+        _LOGGER.info("BERT model for %s moved to %s", language.name, device)
+
+    _BERT_INITIALIZED.add(language)
 
 
 def _find_model_files(model_dir: Path):
@@ -76,7 +93,7 @@ def _find_model_files(model_dir: Path):
     )
 
 
-def _load_model(model_dir: Path, device: str) -> TTSModel:
+def _load_model(model_dir: Path, device: str, half: bool = False) -> TTSModel:
     model_path, config_path, style_path = _find_model_files(model_dir)
 
     _LOGGER.info("Creating TTSModel (model=%s, config=%s, device=%s)",
@@ -96,7 +113,6 @@ def _load_model(model_dir: Path, device: str) -> TTSModel:
     if net_g is not None:
         net_g = net_g.float()
         setattr(model, "_TTSModel__net_g", net_g)
-        _LOGGER.info("TTS network cast to float32")
 
     _LOGGER.info("Model loaded successfully")
     return model
@@ -109,12 +125,22 @@ class GLaDOSEventHandler(AsyncEventHandler):
         model_dir: Path,
         device: str,
         *args,
+        half: bool = False,
+        preload: bool = False,
         **kwargs,
     ) -> None:
         super().__init__(*args, **kwargs)
         self.wyoming_info_event = wyoming_info.event()
         self.model_dir = model_dir
         self.device = device
+        self.half = half
+
+        _optimize_gpu()
+
+        if preload:
+            _LOGGER.info("Pre-loading model at startup...")
+            global _MODEL
+            _MODEL = _load_model(model_dir, device, half)
 
     async def handle_event(self, event: Event) -> bool:
         if Describe.is_type(event.type):
@@ -152,9 +178,9 @@ class GLaDOSEventHandler(AsyncEventHandler):
                 if _MODEL is None:
                     _LOGGER.info("Loading GLaDOS model from %s on %s",
                                  self.model_dir, self.device)
-                    _MODEL = _load_model(self.model_dir, self.device)
+                    _MODEL = _load_model(self.model_dir, self.device, self.half)
 
-                _load_bert_for_language(language, self.device)
+                _load_bert_for_language(language, self.device, self.half)
 
                 sr, audio = await asyncio.to_thread(
                     _MODEL.infer,