i have a different experience on similar tech questions, codex+claude help me to build an excellent BEM and FEM software from scratch that works on everything from 1 cpu to a cluster of gpu. Physics currently supported are acoustics, aeroacoustics, beam, composites, compressible_flow, contact, eddy_current, elasticity, electroacoustics, electrochemistry, fracture, lumped_circuit, magnetostatics, maxwell, nonlinear_solid, piezoelectric, plasticity, porous_flow, semiconductor, shallow_water, shell, stokes, thermal, thermoelasticity, transport, and some turbulence. I have an optimisation software that can do CAD -> mesher -> bem+fem with shape and topology optimisation.
Is it working easily and is it doing everything for me, no.
if you want to try something fun: pick something to optimise and ask evo-hq to find better solutions. That did work great for ex with fft, blas or lapack like stuff, assembly. And since the tool never tired, you can optimise for neon, then avx then rocm then cuda etc