🚀[FEA]: Sequential solver/moving time window method with multiple architecture.

[leolalson]

Is this a new feature, an improvement, or a change to existing functionality?

New Feature

How would you describe the priority of this feature request

Critical (currently preventing usage)

Please provide a clear description of problem you would like to solve.

The sequential solver can take only single "custom_update_operation" in the current structure. But in the problems like heat sink.py(three_fin_2d), there are multiple architecture networks. Please include feature to include multiple architecture for moving time window method.

Describe any alternatives you have considered

No response

Additional context

No response