Published online by Cambridge University Press: 05 December 2012
Introduction
Data-intensive applications have special characteristics that in many cases prevent them from executing well on traditional cache-based processors. They can have highly irregular access patterns with very little locality that do not match the expectations of automatically controlled caches. In other cases, such as when they process data in streaming, they do not have temporal locality at all and only limited spatial locality, therefore reducing the effectiveness of caches.
We present an application-driven study of several architectures that are suitable for data-intensive algorithms. Our chosen application is high-speed string matching, which exhibits two key properties of data-intensive codes: highly irregular access patterns and high-speed streaming data. Irregular access patterns appear in string matching when traversing graph-based representations of the pattern dictionaries being used. String matching is typically used in cybersecurity applications to scan incoming network traffic or files for the presence of signatures (such as specific sequences of symbols), which may relate to attack patterns, viruses, or other malware.
String Matching
String matching algorithms check and detect the presence of one or more known symbol sequences inside the analyzed data sets. Besides their wellknown application to databases and text processing, they are the basis of several other critical, real-world applications. String matching algorithms are key components of DNA and protein sequencing, data mining, security systems, such as Intrusion Detection Systems (IDS) for Networks (NIDS), Applications (APIDS), Protocols (PIDS), or Systems (Host based IDS [HIDS]), anti-virus software, and machine learning problems.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.