save meep object to a file

[pavlo2014]

Dear Meep developers and users,

Is there any way of saving a meep simulation object (sim = mp.Simulation(…)) and near field box data into a file? I have already unsuccessfully tried using pickle to save the object.

I would like to store them and use them latter to calculate the far fields whenever required.

best wishes,
pavlo

[oskooi]

There is already a built-in feature for loading and saving the simulation state to an HDF5 file: https://meep.readthedocs.io/en/latest/Python_User_Interface/#load-and-dump-simulation-state.

For some examples, see the unit tests: https://github.com/NanoComp/meep/blob/master/python/tests/test_dump_load.py.

[stevengj]

(Pickle won't work because most of the simulation state is stored in C++ objects that Python knows nothing about.)

[pavlo2014]

Many thanks, saving a dumping the simulation state is what I need.