Mr' Maximo Lorenzo, Don Tidrow

1
Suggested RTI Enhancements for Engineering Level
Simulation The Paint the Night Experience
 Mr. Maximo Lorenzo, Don Tidrow CECOM Night
Vision and Electronic Sensors Directorate 10221
Burbeck Road, Building 309 Fort Belvoir, VA
22060 703-704-3185 lorenzo_at_nvl.army.mil John
Langworthy Science Applications International
Corporation 4001 N. Fairfax Drive, Arlington VA
22203 jlangwor_at_nvl.army.mil
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Significant MS Exercises Using RTI 1.3NGvx

• AMC RDEC Federation
• SMART 2001
• Calibration Exercise
• Future Combat Command Control Experiment (FCC2)
• Joint Virtual Battlespace

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PTN System Architecture
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Paint the Night Federate Applications
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RTI Implementation Issues Encountered

• RID File Parameters
• Advisories
• Reliable Versus Best Effort Delivery
• Discovery Process Could Take 5 minutes
• Significant Impact on Operations
• Queue Management
• With Advisories, Queuing Problems Observable
  w/700 objects
• Need a Fast Track for Priority Data (e.g.
  control information)
• Interest Management
• Updating ROIs Required As Much As A Minute
• PST Federation Worked Around DDM Problems By
  Adopting a Gateway Filter

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RTI Implementation Issues Encountered (Cont.)

• RTI Deployment And Support
• PTN Sensor Effects Federate - Sole Windows NT
  Application, Uses VC6 Compiler
• Integration of TARDEC VTT Simulator Also
  Impacted By Lack of GCC Support
• 32 Bit System Memory Management Is Limiting
• Benchmarking and Diagnostic Tools
• DDM Diagnostics Are A Must
• Benchmarking Tools Should Account for Object
  Updates As Well As Total Number of Objects
• Isolation of Latency Source(s) Is a Key
  Consideration
• Better Tools Could Reduce the Time Required To
  Conduct Integration and Testing

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Recommended Improvements

• Declaration Management and Queuing
• Should Be Able to Flush RTI Queue
• Priority Queuing Should Be Supported
• Declaration Management Should Allow For
  Discoveries In the Background Federates Should
  be Able to Join Federation Immediately, Rather
  than Wait for Discovery to Complete
• Data Distribution Management
• DDM Best Practices and Pitfalls Should Be
  Documented
• RID File Upgrades
• Add Rid File Parameter to Control Which Interface
  To Use for Reliable Traffic
• Support for Multiple rtiexec, Multiple Subnets

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Recommended Improvements (cont.)

• Establish Hard Boundary on Maximum Tick to
  Improve Polling
• Should Be Able to Query How Many Callbacks are
  In Queue
• Remove Concurrent Access Restrictions from All
  Callbacks
• (If Not Already Done)
• Cross_Platform Support
• Support CYGWIN, with GCC Support for Win32
• Consider 64 Bit Implementation or Ability to
  Remap in Memory
• (Important for graphics intensive
  applications)
• Benchmarking And Diagnostic Tools
• Expand Functionality of Existing DMSO Tools to
  Support
• Multiple RID File Options
• Test Conditions
• Data Analysis
• Should Be Able to Visualize Profile of Where
  Data Is Sent

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Issues and Conclusions

• Continued Support for Windows NT and IRIX OS
• Compatibility of Commercially Available RTIs
• Composability Versus Ease of Application Level
  Development
• FOM Agility
• OMD2Code Approach
• Gateways and Bridge Federates
• Scalability