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So, what makes up a cloud? Let's outline what makes up some other computing environments first.

- Application running on an operating system running directly on a physical server, all located at the place of use (in house).

- Application running on an operating system running as a virtual machine on a virtual machine monitor running on a physical machine, located in house.

- Distributed applications running on several operating systems, each running directly on a physical server, located in house.

- Distributed applications running on several operating systems, each running as a virtual machine on a virtual machine monitor running on a physical machine, located in house.

- Applications running on operating systems running as virtual machines on several virtual machine monitors running on several physical machines (not necessarily one VMM per physical machine), located in house.

Add "not located in house" to any of the above and you have a hosted service. That's nothing new. This blog is a hosted service.

Find a way to charge users only for the time needed for processing and you have utility computing. This blog wouldn't be utility computing, but using network.com (it used to be there--maybe it'll come back) for the rendering of 3D animated movies and paying only for the processor time would be.

The phrase "Computing in the cloud," as used by many people these days, is a very broad generalization that includes hosted services (not located in house), utility computing (pay only for what you use), and virtualization with both to simplify the deployment and management of services and compute nodes. Cloud Computing needs to be vague and generic for the term to be useful, but it's such a challenge trying to decipher the real computing environment being referenced as "in the cloud."]]> General http://sneetches.net/vm/index.php?itemid=8 Thu, 12 Feb 2009 00:13:18 -0600 http://sneetches.net/vm/index.php?itemid=6
I haven't delved into Agents much yet, but I suspect that they may play a role in this thought pattern as well.]]> General http://sneetches.net/vm/index.php?itemid=6 Sun, 13 Jul 2008 13:03:17 -0500 http://sneetches.net/vm/index.php?itemid=5
I got to work on a VMM project with a couple of great guys, and though we chose a very large project for the semester, we made some pretty good progress. We even learned a lot (the whole point of the project).

http://www.sneetches.net/scott/cs523/

Our Android VMM may be something that we'll want to finish, as it's a practical application of virtualization for handheld (ARM-based) devices.

Fun project!]]> General http://sneetches.net/vm/index.php?itemid=5 Thu, 8 May 2008 06:33:23 -0500 http://sneetches.net/vm/index.php?itemid=4
The process needed for such a migration is complex, but certainly describable. VMWare and Xen can both migrate running VMs, so it's not brand new magic, but the interesting thing to note is that a user-initiated live VM migration can also be rewritten to be an even-driven self-managed VM migration.

Real, digital robotic "entities" that can move throughout a network. Certainly, the first steps will be small.]]> General http://sneetches.net/vm/index.php?itemid=4 Thu, 13 Dec 2007 07:56:44 -0600 http://sneetches.net/vm/index.php?itemid=3
As we develop more complex layers of abstraction, we are able to think up new problems that need to be solved. Our solutions give rise to new problems, which in turn give rise to new solutions, and so forth. This is the excitement in the world of computer science.]]> General http://sneetches.net/vm/index.php?itemid=3 Sun, 28 Oct 2007 23:49:14 -0500 http://sneetches.net/vm/index.php?itemid=2 General http://sneetches.net/vm/index.php?itemid=2 Sun, 14 Oct 2007 09:42:21 -0500