RapidRma

Eddie Jesinsky NASA/WVU ATL Intern [email_address] An Introduction To IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Overview IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],RapidRMA Overview IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Applied Technology Lab IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],Tri-Pacific Software IV&V ATL

[object Object],[object Object],[object Object],[object Object],What is it? IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Rate Monotonic Scheduling IV&V ATL

[object Object],[object Object],[object Object],Rate Monotonic Analysis Total task utilization: C 1 /T 1 + ...C N /T N Utilization bound: U(N) = N(2 1/N - 1)‏ - C i = worst case task-execution time of each task i - T i = period of each task i - i ranges from 1 to N Ref: Liu & Layland (1973) IV&V ATL

[object Object],[object Object],Rate Monotonic Analysis - 2 Example: Task Characteristics: Total Task Utilization: 5/20 + 10/40 + 12/60 = 0.25 + 0.25 + 0.20 = .7 = 70% Utilization Bound: U(3) = 3(2 1/3 – 1) = 0.779 = 77.9% IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Use IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Benefits IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Features Also: - Periodic task handling - Aperiodic job handling IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Capabilities IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],Requirements IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Cost IV&V ATL

[object Object],[object Object],[object Object],[object Object],Maturity IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],Installation IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Tutorial Introduction IV&V ATL

[object Object],Resource Graph Editor IV&V ATL

[object Object],Task Graph Editor IV&V ATL

[object Object],Schedulability Analyzer IV&V ATL

[object Object],Importing Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],IV&V ATL

Defining the Resources 1) Add root nodes and child resources 2) Define the parameters of each resource IV&V ATL

Defining the Resources 3) Show any resource accesses across nodes and DASPCP conflicting nodes IV&V ATL

Defining the Tasks 1) Use the Task Graph Editor to define tasks IV&V ATL

Defining the Tasks 2) Specify the parameters of each task: Period, Amount of Work, Relative Deadline, Active Resource IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Required Task Parameters IV&V ATL

[object Object],[object Object],[object Object],Specify Task Parameters IV&V ATL

[object Object],[object Object],Show Task Dependencies IV&V ATL

[object Object],[object Object],[object Object],[object Object],Aperiodic Tasks IV&V ATL

[object Object],[object Object],Define Intermediate Deadlines IV&V ATL

[object Object],[object Object],Run Schedulability Analysis IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Select Analysis Type IV&V ATL

[object Object],Single Node Analysis IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Multiple Node Analysis IV&V ATL

[object Object],[object Object],[object Object],End To End Analysis IV&V ATL

[object Object],[object Object],Time Demand Analysis IV&V ATL

Processor Utilization Analysis ,[object Object],[object Object],IV&V ATL

[object Object],[object Object],Blocking Analysis IV&V ATL

[object Object],[object Object],What-If Analysis A change in execution time from 40 to 36 will make this task schedulable. IV&V ATL

What-If Analysis In this example, a change in processing rate for Node_1 to 1.25 (from a base of 1.00) makes this model schedulable. IV&V ATL

[object Object],Schedules IV&V ATL

[object Object],Periodic Server Analysis ,[object Object],IV&V ATL

[object Object],Aperiodic Simulation IV&V ATL

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Resources IV&V ATL

QUESTIONS? Thank you Eddie Jesinsky, Aaron Higgins – Interns Dr. Tim Menzies, Ph.D. - Director Pier Luigi Long – NASA IV&V IV&V ATL

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