Customers need to predict how many concurrent users can be accommodated on a Sim. In OpenSim were used to a maximum of 50 avatars or even less, depending on the number of prims.

The aim of the OSGRID people was to test if the SIM code improvements made in recent weeks have been effective.

The test was made on 9 October 2009.

Their goal was to reach the 100 users (the magic number) and the result is impressive because they managed to accommodate 85 real avatars(not bots). And the server did not crash, it was still accepting connections when they reached 85, people simply stopped logging.

So how did they do it? The answer lies in three points:

1) They abandoned Openjpeg technology to decode the J2K textures

2) Using the experience of Intel’s John HURLIMAN to rewrite the server code. It remarkable that the arrival of people from IBM and Intel is pushing up the quality of OpenSim

3) Improved management of server memory.

The result is impressive, 85 avatars on an old server with less than 1 GB of RAM.

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Technorati claim code: UEDV838NH3WP

OpenSim is an open platform for creating virtual worlds. When compared to Second Life Open Sim has some clear advantages for businesses.

Before coming down to these advantages, it is important to know that, apart from Second Life, there are a few dozen virtual worlds. In a YouTube video (2008 METAV TOUR - THE SOCIAL VIRTUAL WORLD’SA STAGE) Gari Hayes makes a nice animated catalog of some of them. As the video shows, most of them are geared to gaming or socialization.

The video, however, does not mention two open source platforms that arguably will be the most influential platforms por training and virtual Meetings: Wonderland and OpenSim.

Wonderland is an open source project promoted by Sun that it will become, with all certainty, a reference for project management in a virtual space.

Open Sim is like Second Life

OpenSim is an open source simulator (BSD license) that uses the same standard of communication that Second Life. You can use the browser to OpenSim from Second Life (the client software that is downloaded from secondlife.com). The code was liberated by Linden Labs

IBM is supporting  the community that develops OpenSim. An interesting article in Ciberpaís described the force with which IBM is supporting OpenSim.

Both Second Life and Open Sim are so close from each other that IBM and Linden Labs have teleported avatars from Second Life to an OpenSim server:

OpenSim: open source

It is a project with a dynamic community of developers and highly supported by IBM.

-Open source allows us to develop new features that are tailored to the needs of each organization

OpenSim: our own server

-Open Sim is installed on our own server or servers running in cluster mode (Linux or Windows), which allows us to scale the capacity to our needs. We could have hundreds of simultaneous avatars in a virtual single event.

–Avoid the problems of confidentiality associated with operating on a server controlled by Linden Labs

-The reliability of our service depends on us. Stop relying on the Linden Labs “rolling restarts”, “disruptions” and the like.

OpenSim: Featured Projects

-Various projects led by IBM

-Intel is working on OpenSim to develop “ScienceSim”.

In DOT we have spent several months working on the platform. We’ll talk about our projects soon.

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