[circle-partitioner] Support partition by node index

[seanshpark]

Let's support partition model by node index.

currently support is by operator code name and node name.

[seanshpark]

Idea from https://github.com/Samsung/ONE/issues/7596#issuecomment-911865240

• 1,2,3 -> 1, 2, 3
• 1,3-4 -> 1, 3, 4
• 1, 4- -> 1, 4, 5, 6, ..., N
• -3, 7 -> 1, 2, 3, 7

Support this for now, and other notations can be extended later.

[chunseoklee]

@seanshpark Do you have any idea how to identify node index with multiple subgraph ? (AFAIK, each subgraph has its own indices starting at 0 )

[seanshpark]

Do you have any idea how to identify node index with multiple subgraph ?

As of now, partition is done for first(main) sub-graph. other sub-graphs follow it's owner.

Giving index, name for other sub-graphs is currently a debt for future me(or who ever is going to do)... -_-;

[seanshpark]

Status

• by node index is about Tensor index in circle (or tflite) file
• circle IR doesn't store Tensor index, it's generated when export is done

For partitioner(or other tools), how to identify circle Node from Tensor index?

• TBD