High-Performance Computing: Where

By definition, the raison d’être for high-performance computing is high performance, but floating point operations per second (FLOPS) need not be the only measure. Human productivity, total cost and time to solution are equally, if not more important.

When Petascale Is Just Too Slow

Evolution or revolution, it’s the persistent question. Can we build reliable esascale systems from extrapolations of current technology or will new approaches be required? There is no definitive answer, as almost any approach might be made to work at some level with enough heroic effort. The bigger question is what design would enable the most breakthrough scientific research in a reliable and cost effective way?

What To Do With Those Idle Cores?

So many processors on our desktops.  Four cores, eight cores, soon we will see hundreds of cores.  Almost all of them are going to be idle most of the time.  If it is nearly free to use  those idle cores, what work could we find for them that might be worthwhile?

Privacy As… Sharing More Information?

When I first started working in the area of personal privacy I had what I would call a conventional view on privacy, which is how to minimize the flow of information going out about them. I reasoned that people were private individuals, wanted protection from interruptions, and wanted a lot of control and feedback about what was shared.

Connecting the Two Ends: Mobile Clouds

  In 1959, the colorful and brilliant physicist, Richard Feynman, gave a seminal lecture to the American Physical Society entitled, "There's Plenty of Room at the Bottom," in which he considered the implications of matter manipulation at the atomic scale – a vision of then future nanotechnology. In computing, we also have plenty of room at the bottom, paradoxically enabled by plenty of room at the top. I speak, of course, of the transformative power of our now ubiquitous mobile devices and rich sensor/actuator networks (smart dust) coupled with the capabilities of immense cloud data centers. These two extremes of the modern computing scale are reshaping our society in deep and profound ways.

Computers For Public Schools

It's been a while since several Latin countries decided to start programs to deliver computers and to connect all public schools to the Internet providing access to technological resources to children through several initiatives.

Google Android Authentication

I recently saw a Google Android phone at HotMobile 2009 and was intrigued by the drawing-based authentication mechanism built in. Basically, there's a 3x3 grid of dots, and to log in, you simply use your finger and draw a pattern across these dots, using each dot at most once.

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