October 2008
Intermediate to advanced
368 pages
10h 9m
English
Content preview from Algorithms in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Hardware
In this book we include numerous tables showing the performance of individual algorithms on sample data sets. We used two different machines in this process:
- Desktop PC
We used a reasonable "home office" personal computer. This computer had a Pentium(R) 4 CPU 2.8Ghz with 512 MB of RAM.
- High-end computer
We had access to a set of computers configured as part of a Linux cluster. This computer had a 2x dual-core AMD Opteron™ Processor with 2.6 Ghz speed and 16 gigabytes of Random Access Memory (RAM).
The high-end computer was made available because of work supported by the National Science Foundation under Grant No. 0551584. Any opinions, findings, and conclusions or recommendations expressed in this book are those of the authors and do not necessarily reflect the views of the National Science Foundation.
We refer to these computers by name in the tables of this book.
An Example
Assume we wanted to benchmark the addition of the numbers from 1 to n. An experiment is designed to measure the times for n=1,000,000 to n=5,000,000 in increments of one million. Because the problem is identical for n and doesn't vary, we execute for 30 trials to eliminate as much variability as possible.
The hypothesis is that the time to complete the sum will vary directly in relation to n. We show three programs that solve this problem—in Java, C, and Scheme—and present the benchmark infrastructure by showing how it is used.
Java Benchmarking Solutions
On Java test cases, the current system time (in ...
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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.