[autoparallel] add data_ptr

[super-dainiu]

What's new?

Since all data in OperationData are meta tensors, their tensor.data_ptr()=0. I replace the original tensor.data_ptr() with a customized function generated by uuid4().

Why data_ptr?

Generally speaking, for fine-grained memory calculations, I need to specify which tensors are the same tensors which occupy the same piece of memory on the devices.

Test

[FrankLeeeee]

This is still a draft?