> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chipforge.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Detailed Metric Evaluation

### 1. Functionality Score ((F\_c))

This metric measures the design's functional correctness.

* **Test Generation & Golden Reference:** The Chip Design Team creates comprehensive test suites and runs them on the official **RISC-V ISA Simulator (SPIKE)** to generate the "golden output."
* **Design-Under-Test (DUT) Execution:** The same test cases are executed on the miner's design using the EDA Server's **Verilator** tool for simulation.
* **Scoring:** The (F\_c) score is determined by comparing the DUT’s results against SPIKE's golden outputs.

$$
F_c = \frac{N_{correct}}{N_{total}}
$$

Where\
(N\_correct) is the number of instructions that matched the golden result, and\
(N\_total) is the total number of executed instructions.\
(F\_c) is a value between 0 and 1.

### 2. Performance Score ((P\_c))

Performance is quantified as **Instructions Per Second (IPS)**, representing the processing throughput.

* **IPC & Max Clock Speed ((F\_))**: The processor's **Instructions Per Cycle (IPC)** is measured using performance tests. The processor's maximum clock speed, referred to as (F\_max) (Max Frequency), is determined through timing analysis using **OpenLane**.
* **Performance (IPS):** The throughput is calculated as:

$$
IPS = IPC \times F_{max}
$$

* **Normalization:** This raw IPS value is then normalized against a defined benchmark IPS to yield the 0–1 (P\_c) score (a higher IPS results in a score closer to 1).

### 3. Area Score ($Area$)

The $Area$ score measures the silicon efficiency of the design.

* **Synthesis & Measurement:** The design is synthesized using **OpenLane (Yosys)** targeting the sky130nm PDK, and the total silicon area is extracted.
* **Normalization:** The $Area$ score is **inversely proportional** to the measured area (a smaller area yields a score closer to 1). This score is normalized against a target area defined by the challenge.

### 4. Power Consumption Score (TBD)

This metric is currently under development. Once integrated, the $Score_{Power}$ will be **inversely proportional** to the measured power consumption, normalized against a target power consumption.