# Optimizations of the Social Force Model

## Table of Contents

1. [Performance Results](#performance-results)
2. [Baseline](#2-baseline)
3. [Optimization 1](#3-optimization-1)
4. [Optimization 2](#4-optimization-2)
5. [Optimization 3](#5-optimization-3)
6. [Optimization 4](#6-optimization-4)
7. [Optimization 5](#7-optimization-5)
8. [Optimization 6](#8-optimization-6)
9. [Optimization 7](#9-optimization-7)
10. [Optimization 8](#10-optimization-8)
11. [Optimization 9](#11-optimization-9)

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## Performance Results

### x86

**Machine**:

```
Processors: 16 × AMD Ryzen AI 7 350 w/ Radeon 860M
Memory: 32 GiB of RAM (30.6 GiB usable)
Graphics Processor: AMD Radeon 860M Graphics
Manufacturer: LENOVO
Product Name: 83HX
System Version: IdeaPad Slim 5 14AKP10
```

**Frequency**: 2 GHz

| #   | Optimization | W(n) [Flops]     | T(n) [Cycles]  | Performance [Flops/Cycle] | Author |
| --- | ------------ | ---------------- | -------------- | ------------------------- | ------ |
| 0   | Baseline     | 1'058'400'000.00 | 850'352'900.00 | 1.24                      |        |
| 1   | Inlining     | 1'058'400'000.00 | 756'088'260.00 | 1.40                      | Elliot |
| 2   |              |                  |                |                           |        |
| 3   |              |                  |                |                           |        |
| 4   |              |                  |                |                           |        |
| 5   |              |                  |                |                           |        |
| 6   |              |                  |                |                           |        |
| 7   |              |                  |                |                           |        |
| 8   |              |                  |                |                           |        |
| 9   |              |                  |                |                           |        |

### ARM

**Machine**:

```

```

**Frequency**: ...

| #   | Optimization | W(n) [Flops] | T(n) [Cycles] | Performance [Flops/Cycle] | Author |
| --- | ------------ | ------------ | ------------- | ------------------------- | ------ |
| 0   | Baseline     |              |               |                           |        |
| 1   |              |              |               |                           |        |
| 2   |              |              |               |                           |        |
| 3   |              |              |               |                           |        |
| 4   |              |              |               |                           |        |
| 5   |              |              |               |                           |        |
| 6   |              |              |               |                           |        |
| 7   |              |              |               |                           |        |
| 8   |              |              |               |                           |        |
| 9   |              |              |               |                           |        |

## 2. Baseline

**Author**: [Name]

**Description**:
Standard implementation without optimizations.

```cpp
// Paste your code here only the relevant part
```

---

## 3. Optimization 1

**Author**: [Quy Anh] «Elliot» Nguyen

**Description**:
Manually inlined functions, namely `w`, `acceleration_term_dt`, `pedestrian_repulsion_dt`, `obstacle_repulsion_dt`, `norm`, `dot`, and `find_nearest_obstacle_point`, all into `run_simulation`. Got rid of small number checks after verifying they do not affect results. Removed all references to `Vector2d` and rewrote `Pedestrian` into a struct of doubles. Reduced `sqrt()` calls using mathematical properties.

**Relevant Files**: `variant_inlining_1.cpp`, `variant_inlining_2.cpp`, `variant_inlining_3.cpp`, `variant_inlining_4.cpp`, `variant_inlining_5.cpp`, `variant_inlining_6.cpp`, `variant_inlining_7.cpp`, `pedestrian_reduced.hpp`

## 4. Optimization 2

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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## 5. Optimization 3

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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## 6. Optimization 4

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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## 7. Optimization 5

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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## 8. Optimization 6

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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## 9. Optimization 7

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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## 10. Optimization 8

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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## 11. Optimization 9

**Author**: [Name]

**Description**:
[Briefly describe the optimization technique]

```cpp
// Paste your code here only the relevant part
```

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