[opensource-dev] MOSES Office Hours DSG Test 07-Dec-2012 01

[Sitearm]

;

December 8, 2012 — sitearm

[image: MOSES Office Hours DSG Test 07-Dec-2012
01]<http://sitearm.files.wordpress.com/2012/12/moses-office-hours-dsg-test-07-dec-2012-01.png>
*The MOSES Community *is a professional, online networking group
researching the ability of OpenSimulator platforms to provide independent,
high-security, high-performance access to three-dimensional, online,
interactive virtual environments.

*Distributed Scene Graph (DSG)* is a technology developed by Intel
Corporation to enable 3D web experiences to extend to massive numbers of
OpenSim users.

*Hot topic* at today’s MOSES Office Hours was a test of the MOSES region
running on dual servers connected by Intel’s Distributed Scene Graph (DSG)
technology. DSG allows massive numbers of OpenSim users to interact live
with each other without lag.

For today’s test, 12 logged into region mosesdsg2, and 12 logged into
mosesdsg5; yet each one of the 24 could see every other one of the 24, and
chat and communicate together. Users were logged in from 9 states, and 3
countries. The Office Hours load test is part of preparations for much
larger exercises to be conducted by STTC. Intel members of the MOSES
Community include Robert Adams, Mic Bowman, Dan Lake, and Kitty Liu.

*Selected quotes*

*Bandwidth increases quadratically with the number of users. For n users,
each making a move, the server sends n(n-1) updates. *

n=2; 2 updates
n=5; 20 updates
n=10; 90 updates
n=20; 380 updates
n=50; 2,450 updates
n=100; 9,900 updates
n=200; 3,980 updates
n=500; 249,500 updates
n>500; n*n updates

See also:
U.S. Army Offers MOSES 3D Web System for Non-Army
Researchers<http://sitearm.wordpress.com/2011/05/16/u-s-army-offers-moses-3d-web-system-for-non-army-researchers/>
Distributed scene graph to enable thousands of interacting
users<http://www.pap.vs.uni-due.de/MMVE10/papers/mmve2010_submission_7.pdf>
Military Open Simulator Enterprise Strategy (home
page)<http://brokentablet.arl.army.mil/>
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