MAK Legion: Scalability & Ingteroperability Framework
Scalability into the millions of entities!
Legion is a scalability and interoperability ingteroperability framework for exchanging information, exchanging state and interactions between different simulation applications - between virtual simulators, constructive simulations, and other tools that go into a simulation system.
Legion is composed of
- Legion Data Store Library – to enable optimized multi-threaded simulation applications
- Legion Network Library – to efficiently pass updates and events between applications
- Legion Entity Server – to maintain and serve authoritative state based on client interest
Proven Scalability and Flexibility
- 3.8-million cloud-hosted entities demonstrated for the US Army Synthetic Training Environment
- Initial integrations with VR-Forces, VR-Vantage, VBS4, Unreal, Unity, OneSAF proven before launch
- Designed for both cloud and local deployment on multiple platforms
Designed for Distributed Simulation: Use Cases
- BRIGADE-LEVEL EXERCISES — MEGA CITIES — MODELING GLOBAL AIR TRAFFIC
- THEATER LEVEL WARGAMES — PATTERN OF LIFE TO FILL YOUR SIMULATIONS WITH CIVILIAN ACTIVITY
Key Features
1. Thread-safe Data Store
- Enables applications to simulate, read, and write many entities in parallel – taking full advantage of available hardware
2. Data-Oriented Design
- Highly-optimized run-time data storage - in contiguous memory for cache coherency
- Object-oriented API layer provides ease-of-use
3. Data Remains in Single Consistent Format Throughout the System
- Realistic, animated lifeforms with cultural diversity
- Extensive library of high-quality air, land and maritime moving entity models
- Dynamic structures; damage on buildings and bridges
4. Optimized Network Utilization
- Thousands of entities bundled into a single large packet each frame
- Entity Server sends only the data needed by each client, and only what’s changed
5. Relevance Filtering on the Server
- Server’s Data Store spatially organized
- Server filters against interest criteria
6. Spatial Organization & Ownership Transfer
- Keeps entities spatially organized as they move through the virtual world
7. Optimized for Late Joiners
- All clients get their updates from the server, so late joiners don’t burden every simulator to provide initial state
