October 2014
Intermediate to advanced
288 pages
6h 27m
Japanese
Content preview from 実践 機械学習システム
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12.3
AWS
を使用する
249
jug status
を用いてジョブが8つ実際に実行されているか、確認することができます。ジョブが
完了した後で（今回はかなり高速でしょう）マシンを停止して、コスト削減のため
t1.micro
タイプに
ダウングレードしましょう。「micro」インスタンスは無料です。一方、「extra large」インスタンスは一
時間あたり0.58ドルかかります（2013年4月時点
―
最新情報はAWSのWebで確認してください）。
12.3.2
starcluster
でクラスタの生成を自動化する
先ほど学んだように、Web のインターフェイスを使ってマシンを生成することができます。しかし、
これは退屈な作業であり、ミスを起こしやすい作業でもあります。AmazonはAPIを用意していて、そ
のAPIを使うことで、これまで行った全ての操作をスクリプトから実行することができます。さらに良
いことには、他の人
が便利なツールを開発してくれていて、それを使うことでAWSで行いたい操作の
多くを自動化することができます。
MIT（マサチューセッツ工科大学）のチームが
starcluster
というPythonパッケージを開発して
います。インストールするためには、pipを用いて次のようにコマンドを実行します。
sudo pip install starcluster
これはAmazonのマシンでも自分のローカルマシンからでも実行することができます。どちらの場合
でも正常に動作するでしょう。
それでは、まずはじめ ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.