Create app.py

import gradio as gr
import spaces
import torch

zero = torch.Tensor([0]).cuda()
print(zero.device) # <-- 'cpu' 🤔

@spaces.GPU
def greet(n):
print(zero.device) # <-- 'cuda:0' 🤗
return f"Hello {zero + n} Tensor"

demo = gr.Interface(fn=greet, inputs=gr.Number(), outputs=gr.Text())
demo.launch()


app.py

@@ -0,0 +1,14 @@
+import gradio as gr
+import spaces
+import torch
+
+zero = torch.Tensor([0]).cuda()
+print(zero.device) # <-- 'cpu' 🤔
+
+@spaces.GPU
+def greet(n):
+    print(zero.device) # <-- 'cuda:0' 🤗
+    return f"Hello {zero + n} Tensor"
+
+demo = gr.Interface(fn=greet, inputs=gr.Number(), outputs=gr.Text())
+demo.launch()