Gravitational Wave Data Analysis — IPTA Student Workshop 2017
Docker
We will be using docker to handle all of the analysis software you'll be using. You can download and install docker from https://docs.docker.com/engine/installation/. After docker is installed run the executable.
Docker is a manager that runs individual containers. A container is a self contained set of software sandboxed from your machine. It’s kind of like a virtual machine. Each container is an instance of an image. You can run multiple containers simultaneously, if you want(but we won’t).
We will use an image from Michele Vallisneri’s nanodocker. In a terminal you can download this image by running the command:
You will also need to get a set of PTA data to analyze. You can download a tarball containing the NANOGrav 9yr data release, some PPTA data, and the first IPTA Mock Data Challenge set 3, and some example Jupyter notebooks to get you started.
This tarball contains everything else you need to get started!
Extract the tarball:
tar -xzf ipta_analysis.tgz
You may want to move the new directory somewhere convenient and remember the absolute path to it(I’ll call it /path/to/my/dir/). You’re going to link this directory into your docker container, when you start it. That way you can access everything in that local directory, when you are inside the container.
Starting a Docker container
Once it’s done you can run a Jupyter notebook inside an instance of that container by using the command:
You need to change the path to your local analysis directory. If you use bash as your terminal you can do this is with pwd. In the example below you cd into the directory you want link into the container, save that path to a variable, and use that variable when you launch docker.
cd /path/to/my/dir/
myDir=`pwd`# this saves the output of pwd into a variable
where YOUR_CONTAINER_ID is either the hexadecimal hash or the two_word name
Installing ENTERPRISE
(for the experienced or ambitious participant)
Enterprise is the latest NANOGrav data analysis suite. It’s designed specifically to handle the best practices data analysis as discussed at the December IPTA DR2 workshop. It’s still under development and is in need of testers.
Docker
docker pull micvallis/nanograv-stochastic-user:v1.6Getting the Data
tar -xzf ipta_analysis.tgzStarting a Docker container
docker run -it -p 8888:8888 -u nanograv -v /path/to/my/dir/:/home/nanograv/local_dir/ micvallis/nanograv-stochastic-user:v1.6 run_jupyter.shcd /path/to/my/dir/myDir=`pwd` # this saves the output of pwd into a variabledocker run -it -p 8888:8888 -u nanograv -v ${myDir}:/home/nanograv/local_dir/ micvallis/nanograv-stochastic-user:v1.6 run_jupyter.shdocker psdocker exec -it -u nanograv YOUR_CONTAINER_ID bashInstalling ENTERPRISE