# core.solver.EfficiencyModel { #mlsysim.core.solver.EfficiencyModel }

```python
core.solver.EfficiencyModel()
```

Analyzes the 'Software Wall' — Kernel and compiler efficiency.

This solver replaces the 'guessed' eta parameter with a calculation
based on operator fusion and software stack maturity.

Literature Source:
1. Dao et al. (2022), "FlashAttention: Fast and Memory-Efficient Exact Attention."
2. Ivanov et al. (2021), "Data-Movement-Aware Deep Learning Optimizations."