January 2017
Beginner to intermediate
464 pages
13h 26m
English
Content preview from Strategies in Biomedical Data Science
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Appendix D HPC and Hadoop
Bridging HPC to Hadoop
Overview
The goal of this document is to demonstrate how legacy HPC tools and methodology effectively lessen the learning curve for users familiar with HPC but new to Hadoop.
Environment Modules
In the HPC world, the usage of environment modules is standard. An environment module is a TCL script that when invoked prepends specific software, library, and other variables to the user’s path. For instance, if I logged into an HPC cluster where the default Python version was stock 2.6 but I wanted to use 2.7, I would be able to invoke the 2.7 module if it was available. After loading the module I would be able to simply type python—version and expect to see Python 2.7.x returned. For more information on environment modules, see: http://www.admin-magazine.com/HPC/Articles/Environment-Modules/.
Apache Spark
As I’m an HPC admin and Hadoop admin, I had the unique opportunity to see how multiple versions of a software package coexisted on a cluster of servers. In Hadoop land, the Apache Spark project was under heavy development with new builds and features released on an aggressive schedule. Like most environments we had production use cases for the older “stable” releases. (The term “stable” is used very loosely here.) As resources are limited we didn’t have a spare 40-node Hadoop cluster for development so a solution had to be found for multiple Spark versions to coexist along with the default configuration and specific build/integration ...
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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.