CS162, Spring 2003
Section 1 notes for 28 Jan 2003
Sections 105 & 106
Hakim Weatherspoon, cs162-td@imail.cs.berkeley.edu

Self intro
  - http://www.cs.berkeley.edu/~hweather/ta/cs162

Class logistics
  - SECTION IS TEMPORARY: Will be assigned to new section based on
    project group
  - Project groups: 4-5 people in each group, ALL MEMBERS MUST BE ABLE
    TO ATTEND SAME SECTION
  - Sign up for project groups immediately on the web page
    1.Form a project group of 4-5 students, who can all attend the 
	same section. 
    2.You cannot use this form until every member of your group has 
	received an account form, logged in to the account, and 
	registered by running 'register' (this should be run 
	automatically the first time you log in). 
    3.Run 're-register' if you did not put your name in properly
        when you originally logged into cs162-* acct.
    4.Each project group must fill out one copy of this form. 
    5.We will then assign project groups to sections.     

  - Should have all of the account forms in class on Wednesday 

Newsgroup
  - ucb.class.cs162 
  - Please use the newsgroup 

Office hours
  - Monday  1:30-2:30pm, 651 Soda Hall (Alcove lounge on east end of 6th floor).
  - Tuesday 4:30-5:30pm, 651 Soda Hall

Projects Comments
  - Plan realistic TIME in your project for: 
    1. analysis
    2. design
    3. implementation
    4. testing
    5. documentation
  - START EARLY! May have problems with getting Nachos, CVS, etc.
    working, especially first time
  - Deadline will be 11:59pm on the day the assignment is due - use
    'submit' program
  - You get a total of 5 slip days during the semester
    Rounded up to next full day (so 12:00 midnight counts as 1 day)
    No excuses for late work after you use your slip days!
  - 'glookup' program to look up your grades

Project Phases
  1. Design Document due Feb 19
  2. Design Meetings  - 15-20 minute design meeting with group, everyone 
	in group MUST attend. Sign up sheet for meetings will be on my 
	door (447 Soda)
  3. Turn in code using 'submit' by March 6
  4. Turn in project journal by March 7- 'Group Evaluation Form' on 
	course webpage, under Projects
Exams
  - 2 midterm (no final)

Book & Reader
  - Silberschatz and Galvin, Operating Systems Concepts, 6th Edition 
    (see web page)
  - Reader with the Nachos code available at Copy Central (Northside) 

Nachos
  - Used for our projects, by ex-Berkeley prof
  - Great system, easy to use, makes OS development experimentation much 
    easier than hacking a real OS 
  - Implemented in Java
  - Runs on UNIX, Windows, etc - very portable
  - Nachos roadmap online
  - Please, do not print the Nachos code, use your Reader!

CVS
  - CVS Help Session will be planned with CSUA for this week or next week
  - Groups need use CVS for sharing code during projects
  - Great way to manage the project (and also serves to back up 
    everything you do!)
  - Short tutorial on CVS on my TA and course webpage 

Lecture review
General Functions of an OS
  1. Coordinator and traffic cop
	- allow several things to work together in an efficient
	  and fair manner (parallelism)
	- resource allocation and management
	- sharing and protection
  2. Facilitator ("Extended Machine")
	- provides a nice interface to standard services
	- shared libraries
   
Brief OS History
 1. Late 1950's
	The job queue is a stack of cards. The OS would load the job
	print the job, and make a dump of errors. Only one job at
	a time could run (no spooling). Languages were COBOL,
	FORTRAN, and ALGOL. HW expensive.
 2. Early 1960's
	Mostly batch processing. Multiprogramming. Many jobs can run at 
	the same time.  Overlapping of I/O and computation. Use of 
	'spooling' so the system is not tied down to I/O devices. 
	Protection provided because of sharing.  
	MULTICS OS 1963-1969! HW expensive.
 3. 1970's 
	HW cheap. People more expensive. Interactive time sharing systems
	developed. Fancy filing systems.
	Minicomputer (PDP, PDP 11)
	UNIX OS !!
 4. Early 1980's
	Personal Computing
	Networking, distributed computing
 5. Mid 1990's 
	Mobile Systems