import gradio as gr
import spaces
import torch


def greet(n):
    print('cuda avaliable: ' + str(torch.cuda.is_available()))

    torch.set_default_device('cuda')

    zero = torch.Tensor([0]).cuda()

    one = torch.ones(2, 2, device='cuda')

    two = torch.matmul(one, one).cuda()

    print('zero device: ' + str(zero.device))
    print('one device: ' + str(one.device))
    print('two device: ' + str(two.device))

    return f"Hello {zero + n} Tensor"


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