PPT-Multicore, Parallelism, and Synchronization

Hakim Weatherspoon CS 3410 Spring 2015 Computer Science Cornell University PampH Chapter 211 510 and 65 Announcements HW2 Review Sessions TODAY Tue April 21st Hollister B147pm. wait Bi l s gna C lock acquire D lock release E signalAll Hoare monitor semantics Assume thread T1 is waiting on condition Assume thread T2 is in the monitor Assume thread T2 calls x signal T2 ives u monitor T2 blocks gp T1 takes over monitor run 001 0 001 00001 10 10 10 10 10 10 Screening perf or mance of va ious types of screen constr uctions 55 65 75 85 95 105 115 125 135 145 155 165 175 EM Shielding eff ectiv eness dBmeter requency Hz Surf ace transf er impedance mohmsmeter Aluminiz ed o 1 WHY CHOOSE PARALLELISM Parallel construction also called parallelism shows that two or more ideas are equally important by stating them in grammatically parallel form noun lined up with noun verb with verb phrase Macroprogramming. Systems. Presented by: S. M. . Shahriar. . Nirjon. Timothy W.. . Hnat. and . Kamin. Whitehouse. hnat@cs.virginia.edu, WHITEHOUSE@cs.virginia.edu . Motivation. Synchronization Problems. Rui. . Gu. , . Guoliang. . Jin. , . Linhai. Song, . Linjie. Zhu, Shan Lu. University . of Wisconsin – Madison, USA. Proper Thread Synchronization . is . Hard. Very easy to get things wrong. H. ard-to-find concurrency bugs(Data race, Atomicity Violation, Dead Lock). Susmitha. . kota. . 21-sep-2015. AGENDA. Introduction. Synchronization. Physical Clocks. Global Positioning System. Algorithms. Future Work. References. Introduction: Real . Time System. Vijay . Pai. (PI), Deborah Bennett, . Cordelia. Brown, Yung Lu, . Sam . Midkiff. smidkiff@purdue.edu. Let’s start off pessimistically. I’ve been involved in two or three of these workshops, and the comment I’ve heard from industrial . Masahiro Sasabe. and Tetsuya Takine. Osaka University, Japan. 1. DTNRG at IETF 76. Outline. Research background. Time synchronization. Time sync. for mobile ad hoc networks. Relative time synchronization. fonts used in EMF. . Read the TexPoint manual before you delete this box.: . A. A. A. A. A. Motivation. Clock . Sources & Hardware. Single-Hop Clock Synchronization. Clock Synchronization in Networks. in Wireless Sensor Networks. Philipp Sommer. Roger Wattenhofer. Time Synchronization is a well-studied Problem. Time, Clocks, and the Ordering of Events in a Distributed System. L. Lamport, Communications of the ACM, 1978.. Farnaz. . Moradi. . Asrin. . Javaheri. Outline. Wireless sensor networks. Surveillance Applications. Clock synchronization. Synchronization algorithms. RBS. FTSP. Implementation. Performance Evaluation. What is Parallelism?. Parallelism is no different in English than it is in math. In writing, parallelism occurs when there are items in a series. The items must be parallel. That means they all need to be similar grammatically.. Dr. Yanqing Zhang. Agenda. Overview. Synchronization Techniques. WebDAV(Web Distributed Authoring and Versioning). Future Work. References. What is Synchronization?. In general it is . process of precisely coordinating or matching two or more activities, devices, or processes in time.. Professor Hugh C. Lauer. CS-3013, Operating Systems. (Slides include . copyright materials . Modern . Operating Systems. , 3. rd. ed., by Andrew Tanenbaum and from . Operating System Concepts. , 7. th.