Axel Huebl

Gotta update some CI still. This PR is not super urgent, if you want to avoid any backlash feel free to keep it open until I return from parental leave.

@WeiqunZhang, do you think we could create a file similar to `warpx_used_inputs` that has `amrex::ParmParse` constants evaluated in it? Something like `warpx_evaluated_inputs`.

Example: https://github.com/ECP-WarpX/WarpX/blob/ce7f5cc28cdfa0710f4199912caef4c4d9d2f161/Examples/Tests/Implicit/inputs_1d#L1-L24 Regarding replaced for `amr.n_cell` and `geometry.prob_hi`.

@WeiqunZhang mentioned that currently we will see in `warpx_used_inputs`: ``` amr.n_cell = nz amr.n_cell = 40 geometry.prob_hi = 10.*de0 geometry.prob_hi = ``` (related to https://github.com/AMReX-Codes/amrex/issues/4087 ). We recently updated the...

Thanks for the issue. What does `written in FAB_NATIVE_32 format` mean? You wrote it from a single precision AMReX? If that is the case, you also need to compile pyAMReX...

Hi @indra098124, When you have the time, please see our open questions :) > Maybe you can try to use fcompare (in amrex/Tools/Plotfile) to compare your plotfile with itself to...

Hm, I am a bit hesitant to add a lot if if amrex initialized checks in pyAMReX. But if you add them upstream then we can just C++ throw and...

> Can amrex be initialized when the module is imported? mpi4py style? Possibly... But there is a lot of runtime stuff people might want to pass to init

Yes, for pyAMReX, we added fixes in AMReX that make sure we can finalize and reinit many times in a row in the same process. I always considered import-time side-effects...

An alternative could be to only allow access to pyAMReX functions with a content manager... Something like ```py import amrex.space3d as amr with amr.Initialized() as amx: amx.PlotFileData("./tests/projz04000/") ```