Application Programming in Cloud via Swift

Swift Tutorial, CCGrid 2013, Hour 2Ketan Maheshwari

Overview

Part I– Cloud model of computation– Amazon ec2 setup– Tests accessing ec2 VM nodes

Part II– Swift setup– Swift test drive

Part III– Running a mock app using Swift on Cloud– Exercise

Cloud Model of Computation

Compute resources drawn as VMs from a pool of hardware resources One time configuration Economical: Computation power “outsourced” More control: “root” access to VMs gives more setup options

Amazon EC2 setup

For this tutorial, we encourage using Amazon EC2 cloud computing environment

Any other cloud could be used if EC2 not available Create VMs

Swift

Application programming language– aka parallel scripting– aka workflow framework

Suited to a variety of applications Interfaced to

– Clouds – Grids– Clusters– Supercomputers

What we need: Cloud side

A number of VM instances Onetime Setup

– firewalls– installation

Sanity test IP of instances

What we need: Application Side

App executable installed on cloud instances– Making a single cloud image and drawing instances from it is convenient

Data workflow

What we need: Swift side

Swift installed on submit host Make sure perl is installed on cloud instances

Steps

Encode workflow in Swift