zahiro / aws.tools

R package to use Amazon Web Services

Introduction

Date:	October 5, 2011
Authors:	Whit Armstrong
Contact:	[email protected]
Web site:	http://github.com/armstrtw/AWS.tools
License:	GPL-3

Purpose

AWS.tools is an R package for Amazon Web Services EC2/S3.

Features

• AWS.tools can fire and terminate EC2 instances.
• AWS.tools can upload and pull back S3 objects from R.
• Look for more features shortly.

Usage

A minimal example of borrowed from JD Long:

library(AWS.tools)
library(rzmq)


cl <- startCluster(ami="ami-a531fccc",key="my-key",instance.count=4,instance.type="m1.large")
master.node <- get.master(cl)

estimatePi <- function(seed) {
    set.seed(seed)
    numDraws <- 1e6

    r <- .5
    x <- runif(numDraws, min=-r, max=r)
    y <- runif(numDraws, min=-r, max=r)
    inCircle <- ifelse( (x^2 + y^2)^.5 < r , 1, 0)

    sum(inCircle) / length(inCircle) * 4
}

print(system.time(ans <- zmq.lapply(as.list(1:1e4),
                                    estimatePi,
                                    execution.server=paste("tcp://",master.node$PublicDNS,":6000",sep=""),
                                    sink.server=paste("tcp://",master.node$PublicDNS,":6001",sep=""))))

res <- terminateCluster(cl)