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Articles 91 - 101 of 101
Full-Text Articles in Physical Sciences and Mathematics
Scalable Implementations Of Mpi Atomicity For Concurrent Overlapping I/O, Wei-Keng Liao, Alok Choudhary, Kenin Coloma, George K. Thiruvathukal, Lee Ward, Eric Russell, Neil Pundit
Scalable Implementations Of Mpi Atomicity For Concurrent Overlapping I/O, Wei-Keng Liao, Alok Choudhary, Kenin Coloma, George K. Thiruvathukal, Lee Ward, Eric Russell, Neil Pundit
George K. Thiruvathukal
For concurrent I/O operations, atomicity defines the results in the overlapping file regions simultaneously read/written by requesting processes. Atomicity has been well studied at the file system level, such as POSIX standard. In this paper, we investigate the problems arising from the implementation of MPI atomicity for concurrent overlapping write access and provide a few programming solutions. Since the MPI definition of atomicity differs from the POSIX one, an implementation that simply relies on the POSIX file systems does not guarantee correct MPI semantics. To have a correct implementation of atomic I/O in MPI, we examine the efficiency of three …
Beyond Cise And Back To The Future, George K. Thiruvathukal
Beyond Cise And Back To The Future, George K. Thiruvathukal
George K. Thiruvathukal
Organizing a special issue on novel architectures for Computing Now offered lessons in what online readers want, as well as a glimpse into what's possible for CiSE.
Natural Xml For Data Binding, Processing, And Persistence, George K. Thiruvathukal, Konstantin Läufer
Natural Xml For Data Binding, Processing, And Persistence, George K. Thiruvathukal, Konstantin Läufer
George K. Thiruvathukal
The article explains what you need to do to incorporate XML directly into your computational science application. The exploration involves the use of a standard parser to automatically build object trees entirely from application-specific classes. This discussion very much focuses on object-oriented programming languages such as Java and Python, but it can work for non-object-oriented languages as well. The ideas in the article provide a glimpse into the Natural XML research project.
Putting A Slug To Work, Konstantin Läufer, George K. Thiruvathukal, Ryohei Nishimura, Carlos Ramirez Martinez-Eiroa
Putting A Slug To Work, Konstantin Läufer, George K. Thiruvathukal, Ryohei Nishimura, Carlos Ramirez Martinez-Eiroa
George K. Thiruvathukal
In this article, the authors explore various uses of inexpensive embedded Linux devices such as the Linksys NSLU2 ("slug"). Embedded computing is a topic of growing interest. Although novel architectures such as cell processors, graphics processors (GPUs), and FPGAs are growing in popularity, conventional microproessor designs such as Intel's Xscale (ARM) and Atom pack a punch in a small footprint, not to mention being widely supported by commodity operating system and development tools. We're convinced that this entire space is a tool worth keeping in the scientific programmer's and software developer's toolchests.
The Object Of Platform Studies: Relational Materialities And The Social Platform (The Case Of The Nintendo Wii), Steven E. Jones, George K. Thiruvathukal
The Object Of Platform Studies: Relational Materialities And The Social Platform (The Case Of The Nintendo Wii), Steven E. Jones, George K. Thiruvathukal
George K. Thiruvathukal
Racing the Beam: The Atari Video Computer System,by Ian Bogost and Nick Montfort, inaugurated thePlatform Studies series at MIT Press in 2009.We’ve coauthored a new book in the series, Codename: Revolution: the Nintendo Wii Video Game Console. Platform studies is a quintessentially Digital Humanities approach, since it’s explicitly focused on the interrelationship of computing and cultural expression. According to the series preface, the goal of platform studies is “to consider the lowest level of computing systems and to understand how these systems relate to culture and creativity.”In practice, this involves paying close attentionto specific hardware and software interactions--to the vertical …
Java Grande Forum Report: Making Java Work For High-End Computing, George K. Thiruvathukal
Java Grande Forum Report: Making Java Work For High-End Computing, George K. Thiruvathukal
George K. Thiruvathukal
This document describes the Java Grande Forum and includes its initial deliverables.Theseare reports that convey a succinct set of recommendations from this forum to SunMicrosystems and other purveyors of Java™ technology that will enable GrandeApplications to be developed with the Java programming language.
The Extreme Software Development Series: An Open Curricular Framework For Applied Capstone Courses, Konstantin Läufer, George K. Thiruvathukal
The Extreme Software Development Series: An Open Curricular Framework For Applied Capstone Courses, Konstantin Läufer, George K. Thiruvathukal
George K. Thiruvathukal
We describe an open, flexible curricular framework for offering a collection of advanced undergraduate and graduate courses in software development. The courses offered within this framework are further unified by combining solid foundations with current technology and play the role of capstone courses in a modern software development track. Our initiative has been very successful with all stakeholders involved.
Restfs: Resources And Services Are Filesystems, Too, Joseph P. Kaylor, Konstantin Läufer, George K. Thiruvathukal
Restfs: Resources And Services Are Filesystems, Too, Joseph P. Kaylor, Konstantin Läufer, George K. Thiruvathukal
George K. Thiruvathukal
We have designed and implemented RestFS, a software frame-work that provides a uniform, configurable connector layerfor mapping remote web-based resources to local filesystem-based resources, recognizing the similarity between thesetwo types of resources. Such mappings enable programmaticaccess to a resource, as well as composition of two or moreresources, through the local operating system’s standardfilesystem application programming interface (API), script-able file-based command-line utilities, and inter-process com-munication (IPC) mechanisms. The framework supports au-tomatic and manual authentication. We include several ex-amples intended to show the utility and practicality of ourframework.
Scientific Programming: The Promises Of Typed, Pure, And Lazy Functional Programming: Part Ii, Konstantin Läufer, George K. Thiruvathukal
Scientific Programming: The Promises Of Typed, Pure, And Lazy Functional Programming: Part Ii, Konstantin Läufer, George K. Thiruvathukal
George K. Thiruvathukal
This second installment picks up where Konrad Hinsen's article "The Promises of Functional Programming" from the July/August 2009 issue left off, covering static type inference and lazy evaluation in functional programming languages.
Naked Object File System (Nofs): A Framework To Expose An Object-Oriented Domain Model As A File System, Joseph P. Kaylor, Konstantin Läufer, George K. Thiruvathukal
Naked Object File System (Nofs): A Framework To Expose An Object-Oriented Domain Model As A File System, Joseph P. Kaylor, Konstantin Läufer, George K. Thiruvathukal
George K. Thiruvathukal
We present Naked Objects File System (NOFS), a novel framework that allows a developer to expose a domain model as a file system by leveraging the Naked Objects design principle. NOFS allows a developer to construct a file system without having to understand or implement all details related to normal file systems development. In this paper we explore file systems frameworks and object-oriented frameworks in a historical context and present an example domain model using the framework. This paper is based on a fully-functional implementation that is distributed as free/open source software, including virtual machine images to demonstrate and study …
Moving Academic Department Functions To Social Networks And Clouds: Initial Experiences, George K. Thiruvathukal, Konstantin Läufer, David Dennis
Moving Academic Department Functions To Social Networks And Clouds: Initial Experiences, George K. Thiruvathukal, Konstantin Läufer, David Dennis
George K. Thiruvathukal
The ability to move locally hosted services to cloud-based technologies is a key element in the scientific programming toolbox.