C++ with Torch coupling using Pybind11

note: experimental

Pybind11 can be used in 2 variations:

1. Calling C++ code from Python code (in folder calling)
2. Embedding Python code to C++ code (in main folder) requires Pybind11 headers and an MPI implementation -- run createEnv_pybind.sh if not

embedding

main.cpp is a dummy C++ program with MPI using Cartesian coordinates that mimic a CFD code
calc.py is the corresponding Torch implementation
compile.sh is to compile C++\

notes:

A 3D MPI subdomain in C++ is first transferred to Python
Python gathers the subdomains and distributes the gathered domain equally to each GPU
each GPU performs a front propagation for inference and returns the field back to C++
use compile.sh script to compile and mpirun -n <ranks> example to run

contact:

EI