@hht Hi, I was wondering if you implemented nn. upsample in the graph_pack process. At present, I am trying to implement Unet through VTA, but I met some problems in the graph_pack process. I suspect the reason is nn. upsample or torch.cat. A full description can be found in another post I wrote in Can Upsample be implemented on VTA in graph_pack?. I’m sorry to bother you now. Since I just got in touch with TVM and VTA, I have encountered this problem, but it has not been solved after a long time of trying. I would like to ask if you have encountered this problem or can you provide some suggestions? I look forward to receiving your suggestions. Thank you!