pytorch对应gpu版本是否可用判断逻辑

# gpu_is_ok.py
import torchdef check_torch_gpu():# 打印PyTorch版本print(f"PyTorch version: {torch.__version__}")# 检查CUDA是否可用cuda_available = torch.cuda.is_available()print(f"CUDA available: {cuda_available}")if cuda_available:# 打印CUDA版本print(f"CUDA version: {torch.version.cuda}")# 打印当前GPU设备数量device_count = torch.cuda.device_count()print(f"Number of available GPUs: {device_count}")# 打印每个GPU的信息for i in range(device_count):print(f"\nGPU {i}:")print(f"  Name: {torch.cuda.get_device_name(i)}")print(f"  Compute Capability: {torch.cuda.get_device_capability(i)}")print(f"  Total Memory: {torch.cuda.get_device_properties(i).total_memory / 1024**3:.2f} GB")else:print("No GPU available. PyTorch will use CPU.")if __name__ == "__main__":check_torch_gpu()