Disable ZeroGPU and use persistent GPU hardware

ZeroGPU's offloading mechanism is incompatible with Hunyuan3D's
large models, causing FileNotFoundError in zerogpu-offload directory.

Changes:
- Commented out all @spaces.GPU decorators
- Disabled zero.startup() call
- Use args.device (cuda) directly instead of CPU
- Removed spaces library from requirements.txt
- Changed suggested_hardware from a100-large to a10g-large

This requires persistent GPU hardware (paid tier) but will work reliably.
User needs to upgrade Space to paid GPU tier in HuggingFace settings.

README.md

@@ -7,7 +7,7 @@ sdk: gradio
 sdk_version: 5.33.0
 app_file: app.py
 pinned: false
-suggested_hardware: a100-large
+suggested_hardware: a10g-large
 license: other
 tags:
   - 3D

gradio_app.py

@@ -269,7 +269,8 @@ height="{height}" width="100%" frameborder="0"></iframe>'
         </div>
     """
 
-@spaces.GPU(duration=60)
+# Disabled ZeroGPU due to offloading errors with large models
+# @spaces.GPU(duration=60)
 def _gen_shape(
     caption=None,
     image=None,
@@ -378,7 +379,8 @@ def _gen_shape(
     main_image = image if not MV_MODE else image['front']
     return mesh, main_image, save_folder, stats, seed
 
-@spaces.GPU(duration=180)
+# Disabled ZeroGPU due to offloading errors with large models
+# @spaces.GPU(duration=180)
 def generation_all(
     caption=None,
     image=None,
@@ -460,7 +462,8 @@ def generation_all(
         seed,
     )
 
-@spaces.GPU(duration=60)
+# Disabled ZeroGPU due to offloading errors with large models
+# @spaces.GPU(duration=60)
 def shape_generation(
     caption=None,
     image=None,
@@ -886,16 +889,17 @@ if __name__ == '__main__':
     from hy3dshape.pipelines import export_to_trimesh
     from hy3dshape.rembg import BackgroundRemover
 
-    # Initialize ZeroGPU BEFORE loading any models
-    if ENV == 'Huggingface':
-        from spaces import zero
-        zero.startup()
+    # ZeroGPU disabled due to offloading errors - using persistent GPU instead
+    # if ENV == 'Huggingface':
+    #     from spaces import zero
+    #     zero.startup()
 
     rmbg_worker = BackgroundRemover()
-    
-    # For ZeroGPU, use 'cpu' as device - ZeroGPU will move to GPU automatically
-    model_device = 'cpu' if ENV == 'Huggingface' else args.device
-    
+
+    # Use CUDA directly for persistent GPU (ZeroGPU disabled)
+    # model_device = 'cpu' if ENV == 'Huggingface' else args.device
+    model_device = args.device
+
     i23d_worker = Hunyuan3DDiTFlowMatchingPipeline.from_pretrained(
         args.model_path,
         subfolder=args.subfolder,

requirements.txt

@@ -5,7 +5,7 @@
 --extra-index-url https://download.blender.org/pypi/
 
 # Hugging Face Spaces Support
-spaces>=0.28.3
+# spaces>=0.28.3  # Disabled: ZeroGPU causes offloading errors with large models
 
 # Build Tools
 ninja==1.11.1.1