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# A software workflow for fingerprinting and visualizing defects in damaged crystal structures
---
#### Udo von Toussaint, F. J. Domı́nguez-Gutiérrez, Markus Rampp, Michele Compostella
###### Max-Planck-Institut für Plasmaphysik, Boltzmannstrasse 2, 85748 Garching, Germany
###### Max-Planck Computing and Data Facility, Giessenbachstrasse 2, 85748 Garching, Germany
---


## Introduction

This repository contains the recipe to create a Docker container where users can test the workflow for fingerprinting and visualizing defects in damaged crystal structures.

Together with the required software, data for the analysis of point defects in a bcc Fe sample are provided. This dataset was obtained by performing MD simulations to emulate neutron bombardment at a primary-knock on-atom of 10 keV.


## Requirements

In order to build the Docker image, the following software is required on the local machine:  

* tar
* curl
* wget
* git
* docker

#### Important:
The workflow presented in this repository uses the GAP library for the software QUIP. When installing this software, you are accepting the [GAP license agreement](http://www.libatoms.org/gap/gap_download.html).


## Installation

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Clone this repository to your local machine with
```shell
git clone https://gitlab.mpcdf.mpg.de/mcompo/favad.git
```

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After cloning this repository, run the following command to create the Docker image  

```shell
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cd favad
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./build.sh /root/software/
```

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Note that building the Docker image requires root permission on the local machine.  
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The parameter for the build.sh script is the installation path of the software stack inside the Docker image.  
Additional optional parameters can be provided to automatically accept the GAP license agreement:

```shell
./build.sh /root/software/ "I accept" "FULL NAME" "EMAIL ADDRESS" "ORGANIZATION"
```
If these optional parameters are not specified, the build process will ask for them during runtime.


## How to run the Docker image

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Once the Docker image has been created and the [Docker daemon is running](https://docs.docker.com/config/daemon/), you can shell into the container mounting a local folder where the output is stored using:

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```shell
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docker run -t -i --volume $HOME/favad_output/:/root/sample/output/ favad /bin/bash
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```
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Using the previous command, the ouput files generated inside the Docker container will be stored in $HOME/faved_output/.
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Please note that the content of this folder will be overwritten, if the folder is not empty.

At this point you can run the workflow for fingerprinting and visualizing defects on the sample dataset inside the Docker container:
```shell
cd /root/sample/
python3 FaVaD.py -p /root/sample/parameters.txt
```

---

## Local Installation

In the 'assets' folder we provide a script for the installation of the entire software stack on a local machine (instead of inside a Docker container) running Ubuntu 18.04 LTS.  
In this case, you can run the installer using
```shell
./assets/installer.sh /local_installation_path/ "FULL NAME" "EMAIL ADDRESS" "ORGANIZATION"
```
By running the installer, you are accepting the [GAP license agreement](http://www.libatoms.org/gap/gap_download.html).


## How to run locally

If you installed the software stack locally, you can run the workflow for fingerprinting and visualizing defects on the sample dataset using
```shell
cd ./sample
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python3 FaVaD.py -p ./parameters.txt
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```
Note however that you are required to change the paths in the parameter.txt file to match the current location of the files and software executables.