Lecture Slides 1

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Computer Science
Nalini Venkatasubramanian

ICS 143 - Principles of Operating Systems Lecture 1 - Introduction and Overview T,Th 3:30 - 4:50 p.m. Prof. Nalini Venkatasubramanian ( [email protected] ) [lecture slides contains some content adapted from : Silberschatz textbook authors, John Kubiatowic)](Berkeley Principles of Operating Systems - Lecture 1 1 ICS 143 Winter 2012 Staff Instructor: Prof. Nalini Venkatasubramanian (Venkat) ( [email protected] ) Teaching Assistants: Daniel Miller( [email protected] ) Readers Santanu Sarma([email protected]) Mehdi Sadri ([email protected]) Principles of Operating Systems - Lecture 1 2 Course logistics and details  Course Web page - http://www.ics.uci.edu/~ics143  Lectures - TTh 3:30-4:50p.m, DBH 1100  Discussions – F 12:00-12:50 p.m, EH 1200  ICS 143 Textbook: Operating System Concepts -- Eighth Edition Silberschatz and Galvin, Addison-Wesley Inc. (Seventh,Sixth and Fifth editions, and Java Versions are fine as well).  Alternate Book  Principles of Operating Systems, L.F. Bic and A.C. Shaw, Prentice-Hall/Pearson Education, 2003. ISBN 0130266116. Principles of Operating Systems - Lecture 1 3 Course logistics and details  Homeworks and Assignments 4 written homeworks in the quarter 1 programming assignment (knowledge of C++ or Java required). Handed out at midterm; submit/demo during Finals Week Multistep assignment – don’t start in last week of classes!!! Late homeworks will not be accepted.  All submissions will be made using the EEE Dropbox for the course  Tests Midterm - tentatively Tuesday, Week 6 (Feb 14 ) in class Final Exam - as per UCI course catalog, March 20 (4-6 p.m.) Principles of Operating Systems - Lecture 1 4 ICS 143 Grading Policy Homeworks - 30% • 4 written homeworks each worth 5% of the final grade. • 1 programming assignment worth 10% of the final grade Midterm - 30% of the final grade Final exam - 40% of the final grade Final assignment of grades will be based on a curve. Principles of Operating Systems - Lecture 1 5 Lecture Schedule Week 1: • Introduction to Operating Systems, Computer System Structures, Operating System Structures Week 2 : Process Management • Processes and Threads, CPU Scheduling Week 3: Process Management • CPU Scheduling, Process Synchronization Week 4: Process Management • Process Synchronization Week 5: Process Management • Deadlocks Principles of Operating Systems - Lecture 1 6 Course Schedule Week 6 - Storage Management • Midterm exam, Memory Management Week 7 - Storage Management • Memory Mangement, Virtual Memory Week 8 - I/O Systems • Virtual Memory, Filesystem Interface, Week 9 - Other topics • FileSystems Implementation, I/O subsystems Week 10 - Other topics • Case study – UNIX, WindowsNT, course revision and summary. Principles of Operating Systems - Lecture 1 7 Introduction What is an operating system? Early Operating Systems Simple Batch Systems Multiprogrammed Batch Systems Time-sharing Systems Personal Computer Systems Parallel and Distributed Systems Real-time Systems Principles of Operating Systems - Lecture 1 8 Computer System Architecture What is an Operating System? An OS is a program that acts an intermediary between the user of a computer and computer hardware. Major cost of general purpose computing is software. OS simplifies and manages the complexity of running application programs efficiently. Principles of Operating Systems - Lecture 1 10 Goals of an Operating System Simplify the execution of user programs and make solving user problems easier. Use computer hardware efficiently. Allow sharing of hardware and software resources. Make application software portable and versatile. Provide isolation, security and protection among user programs. Improve overall system reliability error confinement, fault tolerance, reconfiguration. Principles of Operating Systems - Lecture 1 11 Why should I study Operating Systems? Need to understand interaction between the hardware and applications New applications, new hardware.. Inherent aspect of society today Need to understand basic principles in the design of computer systems efficient resource management, security, flexibility Increasing need for specialized operating systems e.g. embedded operating systems for devices - cell phones, sensors and controllers real-time operating systems - aircraft control, multimedia services Principles of Operating Systems - Lecture 1 12 Systems Today Principles of Operating Systems - Lecture 1 13 Hardware Complexity Increases Moore’s Law: 2X From Berkeley OS course transistors/Chip Every 1.5 years Intel Multicore Chipsets Moore’s Law 10000 ??%/year 1000 52%/year 100 Pe10ormance (vs. VAX-11/780) 25%/year 1 1978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 Principles of Operating Systems -erson, ComputerArchitecture: AQuantitative Lecture 1 4th edition, Sept. 15, 2006 15 Software Complexity Increases From MIT’s 6.033 course Principles of Operating Systems - Lecture 1 16 Computer System Components Hardware  Provides basic computing resources (CPU, memory, I/O devices). Operating System  Controls and coordinates the use of hardware among application programs. Application Programs  Solve computing problems of users (compilers, database systems, video games, business programs such as banking software). Users  People, machines, other computers Principles of Operating Systems - Lecture 1 17 Abstract View of System User 1 User User User 2 3 ... n compiler assembler Text editor Database system System andApplication Programs Operating System Computer Hardware Principles of Operating Systems - Lecture 1 18 Operating System Views Resource allocator to allocate resources (software and hardware) of the computer system and manage them efficiently. Control program Controls execution of user programs and operation of I/O devices. Kernel The program that executes forever (everything else is an application with respect to the kernel). Principles of Operating Systems - Lecture 1 19 Operating System Spectrum Monitors and Small Kernels
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