AtomMag

This repo contains the source code of a GPU-parallel Atomistic Spin Dynamics model AtomMag developed by Prof.Jiamian Hu's group at University of Wisconsin-Madison. The simulation results using this code is validated through comparison with Fidimag and analytical results. 66x speed up can be achieved on NVIDIA Tesla P100 compared to serial code.

Features

• Various Lattice type provided including simple cubic, face-centered cubic and 2D hexagonal lattice. Self-defined atomic position can also be input through 'atomposition.in'
• Heisenberg exchange interaction, Dzyaloshinskii–Moriya interaction, uniaxial magnetocrystalline energy, dipole-dipole interaction and zeeman energy are considered
• Spin orbit torque can be simulated
• Fortran code paralleled using OpenACC

How to run the code

1. Install or load PGI compiler. For example, on Bridges

module load pgi

2. Compile

pgf90 -acc -Minfo=accel -o AtomMag AtomMag.f90

3.Run

./AtomMag