1. COP 4600 Operating Systems Fall 2010
Dan C. Marinescu
Office: HEC 439 B
Office hours: Tu-Th 3:30-4:30 PM

2. Lecture 23 – Tuesday November 9, 2010
Last time:
Presentation of the paper “Programming with Threads” by Andrew Birell
Thread coordination with a bounded buffer.
AWAIT
ADVANCE
SEQUENCE
TICKET
Today:
Presentation of the paper “Commodity OS on scalable multiprocessors” by E. Bugnion
Thread coordination: multiple senders – multiple receivers
Virtual Machines
Scheduling Algorithms
Next Time
Lecture 23

3. Single sender and single receiver
Lecture 23

4. Multiple sender –multiple receiver
Lecture 23

5. Lecture 23

6. Virtual machines
First commercial product IBM VM 370 originally developed as CP-67
Advantages:
One could run multiple guest operating systems on the same machine
An error in one guest operating system does not bring the machine down
An ideal environment for developing operating systems
Lecture 23