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the resource (e.g., acquire a mutex lock)"use the resource"release the: Transcript

RA. P&H Chapter 2.11. Han Wang. CS 3410, Spring 2012. Computer Science. Cornell University. Shared Memory Multiprocessors. Shared Memory Multiprocessor (SMP). Typical (today): 2 – 4 . processor dies. for Concurrent Programs. Hyoun. . Kyu. Cho. 1. , Yin Wang. 2. , . Hongwei. Liao. 1. , . Terence Kelly. 2. , . St. é. phane. Lafortune. 1. , Scott Mahlke. 1. 1. University of Michigan . 2. Hewlett-Packard Labs. Ken . Birman. 1. Synchronization paradigms. We’ve looked at critical sections. Really, a form of locking. When one thread will access shared data, first it gets a kind of lock. This prevents other threads from accessing that data until the first one has finished. 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). An Integrated Approach to Architecture and Operating Systems. Chapter 12. Multithreaded Programming and Multiprocessors. ©Copyright 2008 Umakishore Ramachandran and William D. Leahy Jr.. 12 Multithreaded Programming and Multiprocessors. Pro .Net Programming in C#, Adam Freeman. The Trouble with Data. Account balance problem. Going into the races. Creating some order. Sequential execution. Immutability. Isolation. Synchronization. The Trouble with Data. Hakim Weatherspoon. CS 3410, Spring 2015. Computer Science. Cornell University. P&H Chapter 2.11, 5.10,. and 6.5. Announcements. HW2 Review Sessions!. TODAY, Tue, . April 21st. , . Hollister B14@7pm. Chapter 5: Process Synchronization. Background. The Critical-Section Problem. Peterson. ’. s Solution. Synchronization Hardware. Mutex. Locks. Semaphores. Classic Problems of Synchronization. Monitors. Chapter 12. Multithreaded Programming and Multiprocessors. ©Copyright 2008 Umakishore Ramachandran and William D. Leahy Jr.. 12 Multithreaded Programming and Multiprocessors. Is human activity sequential or parallel?. Lecture 10 Locks Scheduling Control: Mutex /Lock Basic pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_lock (&lock); x = x + 1; // or whatever your critical section is Lecture 10 Locks Scheduling Control: Mutex /Lock Basic pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_lock (&lock); x = x + 1; // or whatever your critical section is James . Dinan. , . Pavan. . Balaji. , Jeff Hammond,. Sriram. . Krishnamoorthy. , and . Vinod. . Tipparaju. Presented by: James . Dinan. James Wallace Gives Postdoctoral Fellow. Argonne National Laboratory. Ninghui Li. Based on Slides by Prof. Gustavo . Rodriguez-Rivera . Topic 12: . Thread-safe Data Structures, Semaphores. Pthread. Overview. Pthreads. : POSIX threads. Mutual exclusion and synchronization tools that we cover. with Perinatal Arterial Ischemic Stroke . and Hemiparesis. Sharon Landesman Ramey, Ph.D. (Lead PI). Virginia Tech (Roanoke). Warren . Lo, M.D. . (Multiple PI) . Nationwide Children’s Hospital & The Ohio State .

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