How can I improve performance via a high-level approach when implementing long equations in C++

Question

I am developing some engineering simulations. This involves implementing some long equations such as this equation to calculate stress in a rubber like material:

Answer 1

If you have a Nvidia CUDA graphics card, you could consider offloading the calculations to the graphics card - which itself is more suitable for computationally complicated calculations.

https://developer.nvidia.com/how-to-cuda-c-cpp

If not, you may want to consider multiple threads for calculations.