HPC_Submit

This repository contains the work of MNA for the course High Performance Computing.

---

Repository Contents

The main directory contains the following files and folders:

README.md config_master.txt n_body_final_config.f90 plot_energy_binary.py ang_mom data_comparewith_cluster n_body_master.f90 plot_traj.py animate_binary.py dynamic_chunk10_elapsed_comparison.png nbody_sim sample_trajectories_xy.png center_of_mass_drift.png energy plot_ang_mom.py starting_config.py center_of_mass_vs_time.png hpc_final_cluster plot_com.png com_plot.py initial_configuration_spin.gif plot_comparison.py

---

Description

• .png and .gif files
  These are example outputs generated by the Python plotting scripts found throughout the repository and its subfolders.

• Python scripts (.py)
  These scripts are used to read the binary outputs from the Fortran programs and generate various plots and visualizations. Similar scripts are also present in the subfolders.

• Fortran source and executable

  • n_body_master.f90: Example Fortran source code
  • nbody_sim: Example compiled executable

• Binary output files

  • ang_mom: Angular momentum data
  • energy: Energy data
  • n_body: Positional and velocity data

  These files are also generated for each run and are present inside the corresponding subfolders.

• hpc_final_cluster/ (large sized)
  Contains all runs and generated data from the CompuPhys cluster. Almost all of these outputs have been verified to be correct.

• data_comparewith_cluster/ (large sized) Contains all runs and generated data from computations performed on my personal laptop.

• Shell scripts (.sh)
  Inside the subfolders, several .sh scripts are used to automate multiple runs. These scripts also generate log files, which are included in the corresponding directories.

---

How to Run

Python scripts

Python scripts can be run using:

python3 filename.py

or, depending on device and environment:

python filename.py

---

Fortran compilation

Fortran files can be compiled using:

gfortran -On -fopenmp -o output_name filename.f90

Replace:

• n with the desired optimization level (e.g., -O2, -O3)
• output_name with your preferred executable name
• filename.f90 with the source file name

Different compiler might be used.

---

Shell scripts

The .sh scripts can be run as-is, but should not be moved from their original locations, they rely on relative paths.

Make them executable with:

chmod +x filename.sh

Then run:

./filename.sh

---