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[Quy Anh] «Elliot» Nguyen b86c856e08 Inlining + Reorganization + Roofline
2026-05-19 23:17:44 +02:00

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Optimizations of the Social Force Model

Table of Contents

  1. Performance Results
  2. Baseline
  3. Optimization 1
  4. Optimization 2
  5. Optimization 3
  6. Optimization 4
  7. Optimization 5
  8. Optimization 6
  9. Optimization 7
  10. Optimization 8
  11. Optimization 9

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
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9

2. Baseline

Author: [Name]

Description: Standard implementation without optimizations.

// 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]

// Paste your code here only the relevant part

5. Optimization 3

Author: [Name]

Description: [Briefly describe the optimization technique]

// Paste your code here only the relevant part

6. Optimization 4

Author: [Name]

Description: [Briefly describe the optimization technique]

// Paste your code here only the relevant part

7. Optimization 5

Author: [Name]

Description: [Briefly describe the optimization technique]

// Paste your code here only the relevant part

8. Optimization 6

Author: [Name]

Description: [Briefly describe the optimization technique]

// Paste your code here only the relevant part

9. Optimization 7

Author: [Name]

Description: [Briefly describe the optimization technique]

// Paste your code here only the relevant part

10. Optimization 8

Author: [Name]

Description: [Briefly describe the optimization technique]

// Paste your code here only the relevant part

11. Optimization 9

Author: [Name]

Description: [Briefly describe the optimization technique]

// Paste your code here only the relevant part