(DSG) Distributed Scene Graph technology for (MOSES) Military Open Simulator Enterprise Strategy
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DSG for MOSES Mic Bowman is a principal engineer in Intel Labs and leads the Virtual World Infrastructure research project. His team develops technologies that enable order of magnitude scalability improvements in virtual environments opening the door to new levels of immersiveness and interaction among players. Douglas Maxwell is Science and Technology Manager for the U.S. Army Research Lab, Simulation and Training Technology Center in Orlando, Florida.
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(DSG) Distributed Scene Graph technology for (MOSES) Military Open Simulator Enterprise Strategy
- 1. Intel Technologies for Scalable Virtual Environments Mic Bowman Robert Adams, Dan Lake, Kitty Liu Intel Labs
- 2. 2 Grand Challenge: Scalability Scene Complexity, Concurrent Users & Interactions 50 Avatars 500 Avatars 50,000 Avatars
- 3. 3 Improved Scalability New Usages Serious Games Historical Reconstruction Disaster Planning
- 4. 4 Current Server Architecture All functions in one package Sharding/partitioning scale out by limiting interactions Cannot scale up interactions or immersiveness
- 5. 5 Scalability Constraints Simulation Communication Rendering Constrained by limited computation Constrained by network limitations Constrained by graphics pipeline Disaggregate the computation and distribute dynamically Leverage redundancy in the communication using multicast Manage level of detail and leverage redundancy in viewpoints
- 6. 6 Our Approach: Distributed Scene Graph Scene and actors distributed Scene Spatially partitioned based on load Exposes synchronization interface Actors Operate independently and asynchronously Use HW best suited for workload Plug in new simulators for new behaviors Implementation: BSD-licensed integration with the OpenSimulator 3D application server Interactions & immersiveness scale up with HW
- 7. 7 Scene Synchronization Example Deployment ORLANDO Physics Scripts Persistence CHICAGO Client Mgmt SAN JOSE Client Mgmt BOSTON Client Mgmt OREGON Client Mgmt Simulation components in the same data center Synchronization over managed networks is best Move client connections to the edge of the network, shorten UDP links
- 8. 8 Results Demonstrated 10X increase in interacting clients Distributed physics, script, persistence servers Client managers across multiple geographies 25 servers to support 1000 interacting clients
- 9. 9 Observations Still more work on DSG technologies Optimize scene synchronization services (in progress) Optimize texture distribution (level of detail, pre-fetch, etc) However Simulation is no longer the bottleneck
- 10. 10