当前天工开物版本：2.3.3
我在转换一个单目标跟踪模型，该跟踪模型中间有一部分reshape算子，原始onnx部分结构如下
reshape算子运行在cpu上，使得模型分成了多段，因此我想通过split和concat代替reshape，使模型运行在bpu上，优化之后的onnx对应部分结构如下
使用工具链对优化后的模型进行转换，发现1x256x1x64在进行split和concat时，中间被放到了cpu上执行，对应结构如下
请问这是什么原因造成的呢，由于bpu上是NHWC布局，在split前和transpose后，尺寸都是1x1x64x256，那么中间的那些节点，是否可以直接删除呢
此外，请问有什么其他的方式，可以让reshape和transpose算子放在bpu上运行吗，目前我的bpu利用率很低，而cpu还要执行其他任务，因此想降低cpu的负载
由于上传大小限制，无法上传完整的onnx模型
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