Reply To: Parallelization usig MPI
In principle you can just stick to using g++ as the backend compiler for mpic++. Of course, on Intel CPUs you get quite nice speedups using Intel’s C++ compilers. The new error indicates that the ICC version is too old and / or pulls in a old standard library, specifically it doesn’t support C++20.
Which cluster are you using? We also have some example configs in the config/ directory.