Hi everyone,

I have a Mathematica program that takes an extremely long time to process and still doesn’t produce any result, even after more than 15 hours of runtime.

Here are my system details:

Supercomputer with 256 GB RAM
8 cores, each running at 3.7 GHz
Mathematica uses all CPU cores but only around 3–4 GB of RAM

Despite this, the computation doesn’t seem to progress efficiently. I’d like to understand:

Why is Mathematica using all the CPU but so little memory?

What are the best practices to optimize my code (e.g., parallelization, memory management, symbolic vs numeric evaluation)?

How can I identify the performance bottlenecks in my code?

If helpful, I can share a simplified version of my code to analyze where the slowdown occurs.

Any advice on improving speed or diagnosing such behavior would be greatly appreciated!

Thanks in advance!

This is my code. also i use vs 12.