Update gradio_demo.py

gradio_demo.py

@@ -5,8 +5,13 @@ import os
 if os.environ.get('SUBMODULES_INSTALLED') != "True":
     os.environ['SUBMODULES_INSTALLED'] = "True"
     os.environ["TORCH_CUDA_ARCH_LIST"] = "3.5;5.0;6.0;6.1;7.0;7.5;8.0;8.6+PTX"
+    print('==> TORCH_CUDA_ARCH_LIST =', os.environ.get('TORCH_CUDA_ARCH_LIST'))
     os.system("python -m pip install git+https://github.com/YixunLiang/simple-knn.git")
+    print('==> simple-knn installed!')
     os.system("python -m pip install git+https://github.com/YixunLiang/diff-gaussian-rasterization.git")
+    print('==> diff-gaussian-rasterization installed!')
+else:
+    print('==> simple-knn & diff-gaussian-rasterization already installed!')
 
 from train import *