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Platform Technologies
Introduction
Partially based on Based on Tanenbaum, Modern Operating Systems
& Management Information Systems: Managing the Digital Firm
1
What is a Platform?
Hardware + Software + Networks = Platform
• In general, a computing platform is any pre-existing hardware
environment, a piece of software that is designed to run within it, and
any associated facilities used with it.
• A platform is any base of technologies on which other technologies or
processes are built.
• Most services that the end users use will be build on top of platforms.
2
Generations of Computing
1. (1945–55) Vacuum Tubes
• Punch cards and machine language programming
2. (1955–65) Transistors and Batch Systems
• Mainframes (IBM 1401, IBM 7094), FORTRAN compiler
3. (1965–1980) ICs and Multiprogramming
• IBM System/360, OS/360, multiprogramming, timesharing, MULTICS
4. (1980–Present) Personal Computers
• IBM PC, DOS, Macintosh, Windows, Linux
5. (1990–Present) Mobile Computers
• PDAs, Symbian OS, Blackberry OS, Smartphones, iOS, Android
3
Transistors and Batch Systems
a) Programmers bring cards to 1401.
b) 1401 reads batch of jobs onto tape.
c) Operator carries input tape to 7094.
d) 7094 does computing.
e) Operator carries output tape to 1401.
f) 1401 prints output.
4
Transistors and Batch Systems
a) Programmers bring cards to 1401.
b) 1401 reads batch of jobs onto tape.
c) Operator carries input tape to 7094.
d) 7094 does computing.
e) Operator carries output tape to 1401.
f) 1401 prints output.
4
ICs and Multiprogramming
A multiprogramming system with three jobs in memory.
5
Modern computers
• A modern computer consists of:
• One or more processors
• Main memory
• Disks
• Printers
• Various input/output devices
• Managing all these components
requires a layer of software
• the operating system
6
Hardware Architecture
• A set of disciplines that describes a computer system by specifying its
parts and their relations provides physical environment.
• Common Types:
• Commodity computing platforms
• Video game consoles
• RISC
• Midrange computers
• Mainframe computers
• Supercomputer
7
Operating Systems
• A collection of software that
manages computer hardware
resources and provides common
services for computer programs.
• The operating system is an essential
component of the system software
in a computer system.
• Application programs usually require
an operating system to function.
• Examples?
8
What is an Operating System?
• The most important program that runs on your computer.
• It manages all other programs on the machine.
• Every PC has to have one to run other applications or programs.
• It’s the first thing “loaded”.
• In simple terms, an operating system is a manager.
• It manages all the available resources on a computer, from the CPU, to
memory, to hard disk accesses.
9
What is an Operating System?
• Major cost of general purpose computing is software.
• An operating system is a program that acts an intermediary between
the user of a computer and computer hardware.
• Operating systems simplify and manage the complexity of running
application programs efficiently.
10
The Operating System as an Extended Machine
Operating systems turn the ugly hardware details into beautiful
abstractions for the use of other software.
11
The Operating System as a Resource Manager
• Allow multiple programs to run at the same time
• Manage and protect memory, I/O devices, and other resources
• Includes multiplexing (sharing) resources in two different ways:
• In time
• In space
12
Operating System Concepts
• Processes
• Address spaces (Memory)
• Files
• Input/Output
• Protection
• The shell
• Development in computing over
time
• Large memories
• Protection hardware
• Disks
• Virtual memory
13
Multithreaded and Multicore Chips
(a) A quad-core chip with a shared L2 cache.
(b) A quad-core chip with separate L2 caches.
14
Memory
• Questions when dealing with cache:
• When to put a new item into the cache.
• Which cache line to put the new item in.
• Which item to remove from the cache when a slot is needed.
• Where to put a newly evicted item in the larger memory.
15
Disks
Structure of a disk drive.
16
I/O Devices
• (a) The steps in starting an I/O
device and getting an interrupt.
• (b) Interrupt processing involves
taking the interrupt, running the
interrupt handler, and returning
to the user program.
17
Buses
The structure of a large x86 system.
18
Types of Operating Systems
• Mainframe operating systems
• Server operating systems
• Multiprocessor operating systems
• Personal computer operating systems
• Handheld operating systems
• Embedded operating systems
• Sensor node operating systems
• Real-time operating systems
• Smart card operating systems
19
Evolution of IT infrastructure
• Enterprise computing era:
1992 to present
• Move toward integrating disparate
networks, applications using
Internet standards and enterprise
applications
• Cloud and mobile computing:
2000 to present
• Cloud computing: computing
power and software applications
supplied over the Internet or
other network
Infrastructure Components
• IT Infrastructure has seven main components:
1. Computer hardware platforms
2. Operating system platforms
3. Enterprise software applications
4. Data management and storage
5. Networking platforms
6. Internet platforms
7. Consulting system integration services
22
Infrastructure Components
• Computer hardware platforms
• Client machines
• Desktop PCs, mobile devices, laptops
• Servers
• Blade servers: ultrathin computers stored in racks
• Mainframes:
• IBM mainframe equivalent to thousands of blade servers
• Top chip producers:
• Intel, AMD, ARM, IBM
• Top firms:
• IBM, HP, Dell, Lenovo
Infrastructure Components
• Operating system platforms
• Operating systems
• Server level: 65% run Unix or Linux; 35% run Windows
• Client level:
• 90% run Microsoft Windows (XP, 2000, CE, etc.)
• Mobile/multitouch (Android, iOS)
• Cloud computing (Google’s Chrome OS)
• Enterprise software applications
• Enterprise application providers: SAP and Oracle
• Middleware providers: BEA
Infrastructure Components
• Data management and storage
• Database software:
• IBM (DB2), Oracle, Microsoft (SQL Server), Sybase (Adaptive Server Enterprise), MySQL
• Physical data storage:
• EMC Corp (large-scale systems), Seagate, Maxtor, Western Digital
• Storage area networks (SANs):
• Connect multiple storage devices on dedicated network
Infrastructure Components
• Networking/telecommunications platforms
• Telecommunication services
• Telecommunications/cable company charges for voice lines and Internet access
• AT&T, Verizon
• Network operating systems:
• Windows Server, Linux, Unix
• Network hardware providers:
• Cisco, Alcatel-Lucent, Nortel, Juniper Networks
Infrastructure Components
• Internet platforms
• Hardware, software, management services to support company web sites,
(including web-hosting services) intranets, extranets
• Internet hardware server market:
• IBM, Dell, Oracle, HP
• Internet services:
• Amazon, Google
• Web development tools/suites:
• Microsoft (.NET) Oracle (Java), Adobe
Infrastructure Components
• Consulting and system integration services
• Even large firms do not have resources for full range of support for new,
complex infrastructure
• Software integration:
• ensuring new infrastructure works with legacy systems
• Legacy systems:
• older TPS created for mainframes that would be too costly to replace or redesign
• Accenture, IBM Global Services, EDS, Infosys, Wipro

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Platform-Technology.pdf

  • 1. Platform Technologies Introduction Partially based on Based on Tanenbaum, Modern Operating Systems & Management Information Systems: Managing the Digital Firm 1
  • 2. What is a Platform? Hardware + Software + Networks = Platform • In general, a computing platform is any pre-existing hardware environment, a piece of software that is designed to run within it, and any associated facilities used with it. • A platform is any base of technologies on which other technologies or processes are built. • Most services that the end users use will be build on top of platforms. 2
  • 3. Generations of Computing 1. (1945–55) Vacuum Tubes • Punch cards and machine language programming 2. (1955–65) Transistors and Batch Systems • Mainframes (IBM 1401, IBM 7094), FORTRAN compiler 3. (1965–1980) ICs and Multiprogramming • IBM System/360, OS/360, multiprogramming, timesharing, MULTICS 4. (1980–Present) Personal Computers • IBM PC, DOS, Macintosh, Windows, Linux 5. (1990–Present) Mobile Computers • PDAs, Symbian OS, Blackberry OS, Smartphones, iOS, Android 3
  • 4. Transistors and Batch Systems a) Programmers bring cards to 1401. b) 1401 reads batch of jobs onto tape. c) Operator carries input tape to 7094. d) 7094 does computing. e) Operator carries output tape to 1401. f) 1401 prints output. 4
  • 5. Transistors and Batch Systems a) Programmers bring cards to 1401. b) 1401 reads batch of jobs onto tape. c) Operator carries input tape to 7094. d) 7094 does computing. e) Operator carries output tape to 1401. f) 1401 prints output. 4
  • 6. ICs and Multiprogramming A multiprogramming system with three jobs in memory. 5
  • 7. Modern computers • A modern computer consists of: • One or more processors • Main memory • Disks • Printers • Various input/output devices • Managing all these components requires a layer of software • the operating system 6
  • 8. Hardware Architecture • A set of disciplines that describes a computer system by specifying its parts and their relations provides physical environment. • Common Types: • Commodity computing platforms • Video game consoles • RISC • Midrange computers • Mainframe computers • Supercomputer 7
  • 9. Operating Systems • A collection of software that manages computer hardware resources and provides common services for computer programs. • The operating system is an essential component of the system software in a computer system. • Application programs usually require an operating system to function. • Examples? 8
  • 10. What is an Operating System? • The most important program that runs on your computer. • It manages all other programs on the machine. • Every PC has to have one to run other applications or programs. • It’s the first thing “loaded”. • In simple terms, an operating system is a manager. • It manages all the available resources on a computer, from the CPU, to memory, to hard disk accesses. 9
  • 11. What is an Operating System? • Major cost of general purpose computing is software. • An operating system is a program that acts an intermediary between the user of a computer and computer hardware. • Operating systems simplify and manage the complexity of running application programs efficiently. 10
  • 12. The Operating System as an Extended Machine Operating systems turn the ugly hardware details into beautiful abstractions for the use of other software. 11
  • 13. The Operating System as a Resource Manager • Allow multiple programs to run at the same time • Manage and protect memory, I/O devices, and other resources • Includes multiplexing (sharing) resources in two different ways: • In time • In space 12
  • 14. Operating System Concepts • Processes • Address spaces (Memory) • Files • Input/Output • Protection • The shell • Development in computing over time • Large memories • Protection hardware • Disks • Virtual memory 13
  • 15. Multithreaded and Multicore Chips (a) A quad-core chip with a shared L2 cache. (b) A quad-core chip with separate L2 caches. 14
  • 16. Memory • Questions when dealing with cache: • When to put a new item into the cache. • Which cache line to put the new item in. • Which item to remove from the cache when a slot is needed. • Where to put a newly evicted item in the larger memory. 15
  • 17. Disks Structure of a disk drive. 16
  • 18. I/O Devices • (a) The steps in starting an I/O device and getting an interrupt. • (b) Interrupt processing involves taking the interrupt, running the interrupt handler, and returning to the user program. 17
  • 19. Buses The structure of a large x86 system. 18
  • 20. Types of Operating Systems • Mainframe operating systems • Server operating systems • Multiprocessor operating systems • Personal computer operating systems • Handheld operating systems • Embedded operating systems • Sensor node operating systems • Real-time operating systems • Smart card operating systems 19
  • 21. Evolution of IT infrastructure • Enterprise computing era: 1992 to present • Move toward integrating disparate networks, applications using Internet standards and enterprise applications • Cloud and mobile computing: 2000 to present • Cloud computing: computing power and software applications supplied over the Internet or other network
  • 22. Infrastructure Components • IT Infrastructure has seven main components: 1. Computer hardware platforms 2. Operating system platforms 3. Enterprise software applications 4. Data management and storage 5. Networking platforms 6. Internet platforms 7. Consulting system integration services 22
  • 23. Infrastructure Components • Computer hardware platforms • Client machines • Desktop PCs, mobile devices, laptops • Servers • Blade servers: ultrathin computers stored in racks • Mainframes: • IBM mainframe equivalent to thousands of blade servers • Top chip producers: • Intel, AMD, ARM, IBM • Top firms: • IBM, HP, Dell, Lenovo
  • 24. Infrastructure Components • Operating system platforms • Operating systems • Server level: 65% run Unix or Linux; 35% run Windows • Client level: • 90% run Microsoft Windows (XP, 2000, CE, etc.) • Mobile/multitouch (Android, iOS) • Cloud computing (Google’s Chrome OS) • Enterprise software applications • Enterprise application providers: SAP and Oracle • Middleware providers: BEA
  • 25. Infrastructure Components • Data management and storage • Database software: • IBM (DB2), Oracle, Microsoft (SQL Server), Sybase (Adaptive Server Enterprise), MySQL • Physical data storage: • EMC Corp (large-scale systems), Seagate, Maxtor, Western Digital • Storage area networks (SANs): • Connect multiple storage devices on dedicated network
  • 26. Infrastructure Components • Networking/telecommunications platforms • Telecommunication services • Telecommunications/cable company charges for voice lines and Internet access • AT&T, Verizon • Network operating systems: • Windows Server, Linux, Unix • Network hardware providers: • Cisco, Alcatel-Lucent, Nortel, Juniper Networks
  • 27. Infrastructure Components • Internet platforms • Hardware, software, management services to support company web sites, (including web-hosting services) intranets, extranets • Internet hardware server market: • IBM, Dell, Oracle, HP • Internet services: • Amazon, Google • Web development tools/suites: • Microsoft (.NET) Oracle (Java), Adobe
  • 28. Infrastructure Components • Consulting and system integration services • Even large firms do not have resources for full range of support for new, complex infrastructure • Software integration: • ensuring new infrastructure works with legacy systems • Legacy systems: • older TPS created for mainframes that would be too costly to replace or redesign • Accenture, IBM Global Services, EDS, Infosys, Wipro