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U0_BUS : 21%
U1_BUS : 24%
U2_BUS : 19%
U0_CPU : 21%
U1_CPU : 37%
U2_CPU : 34%
U0_MEM : 9.5%
U1_MEM : 9.4%
U2_MEM : 8%
IO : 17%
Distribution Architect Tool Example Graph
AIRBUS France - Simulation Industry and Software Departments - SVA September 2009 Page 38
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
Simulation Levels and Validity Assessment
AIRBUS France - Simulation Industry and Software Departments - SVA September 2009 Page 39
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
Strategic modeling drivers
M3 M5
M7 M9
M11
Virtual aircraft
Four dimensional systems
Modeling performance improvement
Set of models for system architects
Extended enterprise modeling platform
DELIVERABLE TITLE
by
Author (Company)
Abstract:
This document describes…
Dissemination:
Deliverable/Output n°: Issue n°:
Keywords:
i
Aircraft on the desk
Concept virtual bird
AIRBUS France - Simulation Industry and Software Departments - SVA September 2009 Page 40
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
Model Approaches
• Top down approach
!From the TLARD model the aircraft
!Model of requirements
!Model of constraints
• Bottom up approach
!From the old program database
!Create models with existing parametric data
!Model simplification layers
!Propagate uncertainty info through the way up
AIRBUS France - Simulation Industry and Software Departments - SVA September 2009 Page 41
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
Level 1 Simulation
Spreadsheet Analytical Method
Level 2 Simulation
Black Box Statistical Method
Level 3 Simulation
Simulation measurement Method
Simulation Speed
Software Systems Simulation Flow
Fast
Slow Standard !C" programs from
ETSI , Mot-LABS
Software Architecture Partitioning
Early Software System Integration
Software Validation
Allows to:
Instruction Set
Simulator ISS
Collected DATA is
back annotated in
higher level simulations
Level 4 Simulation
Verliog / VHDL simulation
Co-Design
Instruction Set Simulation Introduction
AIRBUS France - Simulation Industry and Software Departments - SVA September 2009 Page 42
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
System Simulation Flow
Level 1 Simulation
Spreadsheet Analytical Method
Level 2 Simulation
Black Box Statistical Method
Level 3 Simulation
Simulation measurement Method
Application Code
Standards,
!C" programs, Mot-LABS
New Use Cases
Automated Model
Extraction
!C" to SystemC
New High Level
Representation
SysML(MARTE)/AADL
New Mid Level
Representation
AADL/SystemC
New Software Level
Implementation C/C++
SystemC/ASM
Existing
Software Base
Memory Timings
Estimation
(from Level 4)
Performances
Measures @ 5%
Existing
Software Base
High Level Models
Automated Model
Extraction
Performances
Measures @ 15%
Performances
Measures @ 25%
Level 4 Validation
AIRBUS France - Simulation Industry and Software Departments - SVA September 2009 Page 43
© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.
• Use a third party simulator capable of emulating the aircraft computer
• Aircraft computer emulated model can have different modeling levels
• Emulation models can be used to interface with the provider
• Development for system integration, software and hardware can go in parallel
• MDS-IMA kick off meeting held Dec 1st
System Emulation
•Functional View (FV)
•System Overhaul Timing, point to point
•Specify Function
•Prorgammers View (PV)
•Register Accurate and bit-true
•Develop Firmware Software
•Architects View (AV)
•Explore and validate architecture
•Profile system for HW/SW tradeoffs
•Verification View (VV)
•Validate before implementing
•Massive Test campains
Airbus
System Supplier
Business model: exchange the model
Coding
Detailed
design
High level
design
Specificatio
n
Unit Test
Integration
Test
Validation
Test
AIRBUS France - Simulation Industry and Software Departments - SVA September 2009 Page 44
　
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