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+ - Producer/Consumer VMs Using Instant Live-Cloning->

Submitted by Laxitive
Laxitive (10360) writes "GridCentric just posted an article and demo on using live-cloning of VMs across a network to implement a producer/consumer system where new producer and/or consumer VMs can be instantly scaled from a single running VM to dozens in a few seconds, with just a single click.

The article demonstrates scaling from 1 VM to more than a dozen (across multiple physical hosts on a network) in just a few seconds... putting the scaling performance of existing cloud architectures to shame."

Link to Original Source

+ - DDOS-in-a-box: VM swarm in a dozen lines of shell->

Submitted by Laxitive
Laxitive (10360) writes "We (GridCentric) just posted a couple of interesting videos demoing a load-testing use-case on top of our freely available Xen-based virtualization platform called Copper. In both videos, we use live-cloning of VMs to instantly create a swarm of worker VMs that act as clients to a webapp. The ability to clone is exposed as an API call to the VM that wants to clone itself, meaning that in a dozen lines of shell, we can script the automatic creation and control of dozens of VMs across multiple physical computers.

Creating a clone VM in Copper is similar in function and complexity to forking a process in Unix, and carries all the same assurances: your new VMs are near exact copies of the original VM, start running within seconds of the clone command being invoked, and are "live" — meaning that all programs running on the original VM remain running on the clone VM.

The more we play with it, the more it feels like live-cloning is one of those core capabilities which is at once powerful as well as easy to leverage in designing distributed applications and services. And it seems that today, when cloud is on the top of everyone's mind, is when we should really be having a discussion on what the APIs, architecture, and features of this new class of distributed operating systems should be.

We hope this demo spurs some of that discussion..."

Link to Original Source
The Military

Researchers To Build Underwater Airplane 263

Posted by ScuttleMonkey
from the journey-to-the-bottom-of-the-sea dept.
coondoggie writes to tell us that DARPA seems to still be having fun with their funding and continues to aim for the "far out." The latest program, a submersible airplane, seems to have been pulled directly from science fiction. Hopefully this voyage to the bottom of the sea is of the non-permanent variety. "According to DARPA: 'The difficulty with developing such a craft come from the diametrically opposed requirements that exist for an airplane and a submarine. While the primary goal for airplane designers is to try and minimize weight, a submarine must be extremely heavy in order to submerge underwater. In addition, the flow conditions and the systems designed to control a submarine and an airplane are radically different, due to the order of magnitude difference in the densities of air and water.'"

Comment: Re:Just now? (Score 2, Insightful) 362

by Slowping (#24276685) Attached to: China Races To Clean Up Olympic Air

I'm no China apologist, but I wonder if people are dismissing the long-lasting impacts of these efforts. Big political events such as the Olympics are great motivators for change and innovation in the same way as wars; and in much more agreeable conditions. A significant amount of spending and change that Bejing is instituting here is indeed short term; but not without some residual long-lasting impacts for Bejing and other cities. Even if the enviro-friendly spending is cut to a fraction of what it is now, the experience and momentum gained is non-trivial, IMHO. 10 years from now while the developed Western world is still holding each others' dicks and talking about policy change, we may wake up to find China as the underdog that beat everyone to the punch. I have no doubt that the central political forces in China would love to deal such a large international political blow.

User Journal

Journal: quote of the day 1

Journal by Slowping

There are more instances of the abridgement of the freedom of the people by the gradual and silent encroachment of those in power, than by violent and sudden usurpation.
-- President James Madison. 1751-1836

User Journal

Journal: Best Viewed in .... Mozilla?

Journal by Slowping

So I was just surfing around Google news, and stumbled into the Taipei Times website for some news stories.

But the pleasantly surprising thing I find at the bottom of the page: "Best view in Mozilla". Nice! Anyone else have any links to mainstream media sites that actively recognize and advertise Mozilla?

User Journal

Journal: of boys and girls in education

Journal by Slowping

I saw this link somewhere in Slashdot, and added it to my "to read" list. But I have unfortnately forgotten which post (or the poster) that I got this from.

Anyways, here's an interesting and well written article regarding the educational and performance gap between boys and girls. Though not a peer-reviewed publication itself, it's still an interesting read.

... though his invention worked superbly -- his theory was a crock of sewage from beginning to end. -- Vernor Vinge, "The Peace War"