PowerPoint-presentatie

1
Welcome
2
BOSS

• Barts
• Operating
• System
• Structure

B.Visscher Aug 2001
3
Introduction

• Design Goals
• What is BOSS
• Hardware
• Dependency Flow Model
• Implementation resources BOSS
• Perceptron application
• Conclusion
• Questions

4
Design Goals

• Easy to understand and program
• Transparent Hardware / Software
• Fast
• Reliable
• Safe
• Free

5
Traditional v.s. BOSS
Applications
Applications
Dependency Flow Model
Operating System
BOSS
Hardware
6
Hardware
Resource2
Resource1
Resource3
Network
Resources Linked Together in Network
Resourcen
Resourcen-1
7
Resource
Environment / Side Effects
Network
8
Dependency Flow Model

• Dependency Flow Networks
• Programming
• Owner structure
• Abstraction
• Process management
• Resource Structure
• Scheduling
• Information
• Security

9
Dependency Flow Network
Programming
1

• Sockets
• Process
• Ports
• Storage
• Channels
• Communication

Repeat

2 3 5 8 13 21 etc.
10
Owner structure
Abstraction Process management
DFN
DFN
DFN
Master Owner socket
DFN
Owner socket
Owner socket
DFN

• Owner holds DFN status
• Suspend
• Active
• Terminate

DFN
Owner socket
DFN
11
Resource structure
Scheduling Information Security

• Socket request for a process
• Resource provider of processes

Resource
12
Socket

• Part of
• DFN
• Owner structure
• Resource structure
• Represents
• Resource process (atomic)
• DFN (combined)

13
Abstraction
Subroutine Function
Numbers

• Black Box Owner
• Behavioral description
• Implicit
• White Box DFN
• Dependency description
• Explicit

True / False
14
LinkLoader Resource

• Converts passive dependency data into working
  processes (DFN)
• Manages Black box processes
• Communicates variables
• Introduces constants
• Suspends / Activates / Terminates processes
• Manages Namespaces
• Primary namespace
• Secondary namespace
• Global namespace

15
Complete Structure BOSS
Resource 0 LinkLoader
Resource N
Resource 1
Processor N.K
Processor N.1
Processor 1.P
Processor 1.1
Extension processes
Extension processes
LinkLoader processes
Extension
Extension
Sockets
Sockets
Sockets
Ports
Ports
Ports
Network
Channels
16
Implemented processes

• Naming of resource processes
• ltresourcegt.ltprocessgt(in0,in1inn)(out0,out1outn)
• Resource signal, boolean, byte, integer, float,
  double
• Example boolean.and(boolean,boolean)(boolean)
• Example integer.(integer,integer)(integer)
• Resource flow
• Processes repeat, hold, sync, switch, merge,
  last, after
• All processes for data types signal,boolean,,_at_,
  NIL)
• Resource text user interface, TUI

17
TUI Resource
Demo
Background
Layer N
Layer 2
Screen
Layer 1
Layer 0
Layer Holder

• Screen divided into multiple layers
• Background color

18
Perceptron
W0
W1
W2
X1
X2

• Running
• Y (W0 W1 X1 W2 X2) gt 0
• Training (Determining W)
• Y True, Y False -gt (Y-Y)1
• Y False, Y True -gt (Y-Y)-1
• Wi new Wi old (Y-Y)Xi
• Y, Y boolean True, False
• X, W integer -n-2,-1,0,1,2n

0
Y
19
Perceptron Demos
True / False Random
True

• Random Value range
• 127,127
• W0, W1 W2 1
• Training True
• Y True, False, Random

Training
X1
X2
W0
W1
W2
Y
Perceptron
W0
W1
W2
Y
W0
False
True
False
W1
True
W2
Random
20
Conclusion

• Easy to understand and program / Free
• DFN
• Owner structure / Abstraction
• Information in resources
• Transparent Hardware / Software
• Atomic processes
• Combined processes
• Fast
• Parallel execution of processes
• Reliable / Safe
• Resource structure
• Autonomy of resources

21
Questions