mxnet框架下的图像语义分割

[攻城狮要飞翔]

每次利用训练好的网络模型和权重对新图片进行预测的时候都会出现下面的信息，请问这是为什么？
[16:03:48] src/nnvm/legacy_json_util.cc:209: Loading symbol saved by previous version v1.2.1. Attempting to upgrade...
[16:03:48] src/nnvm/legacy_json_util.cc:217: Symbol successfully upgraded!
[16:03:49] src/operator/nn/./cudnn/./cudnn_algoreg-inl.h:97: Running performance tests to find the best convolution algorithm, this can take a while... (setting env variable MXNET_CUDNN_AUTOTUNE_DEFAULT to 0 to disable)
[16:03:53] src/nnvm/legacy_json_util.cc:209: Loading symbol saved by previous version v1.2.1. Attempting to upgrade...
[16:03:53] src/nnvm/legacy_json_util.cc:217: Symbol successfully upgraded!
[16:03:53] src/nnvm/legacy_json_util.cc:209: Loading symbol saved by previous version v1.2.1. Attempting to upgrade...
[16:03:53] src/nnvm/legacy_json_util.cc:217: Symbol successfully upgraded!
[16:03:53] src/nnvm/legacy_json_util.cc:209: Loading symbol saved by previous version v1.2.1. Attempting to upgrade...
[16:03:53] src/nnvm/legacy_json_util.cc:217: Symbol successfully upgraded!

需要自己手动upgraded吗？