Okay, now do it by percent of processor (CPU/GPU/whatever) cycles.
Although, TBF, you can replace it all with C/C++. Or Rust, assume the optimisation has gotten good enough. It’s just that few people are both qualified for and interested in rewriting numerical linear algebra algorithms, and there’s no real reason to if the Fortran works.
Okay, now do it by percent of processor (CPU/GPU/whatever) cycles.
Although, TBF, you can replace it all with C/C++. Or Rust, assume the optimisation has gotten good enough. It’s just that few people are both qualified for and interested in rewriting numerical linear algebra algorithms, and there’s no real reason to if the Fortran works.