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Synchronization serves two purposes: 1) to ensure safety for updates on shared data (e.g. to avoid races conditions), and 2) to coordinate and order actions taken by threads (e.g. handling threads which communicate intermediate results amongst one another).]
One of the most important aspects of parallel programs is that all their possible interleavings must be correct. One possible way to guarantee this is to simply put one lock in the beginning of each thread; however, it is also clear that we want to use as as few constraints as possible, in order to effectively exploit the available concurrency. Thus, the correct placement of locks is not always trivial. In general, locks provide safety and correctness, while condition variable provide ordering.
Define an assembly language Assembly language stands for a Low level programming language
What is the exclusive feature of UNIX Shell is the exclusive feature of UNIX.
Problem: a) Explain physically what occurs when a disk is fragmented. What is the purpose of "defragmenting" a disk? b) What is the idea behind backing up data on a secondar
VARIABLE PARTITIONING We can differ the partitions and change the location according to the size of the process. 50k 40k
What are batch systems? Early computers were physically huge machines run from a console. The general input devices were card readers and tape drivers. The common output device
what are the factors influencing the choice of a mode of transportation?
What is a path name? A pathname is the path from the root by all subdirectories to a specified file. In a two-level directory structure a user name and a file name explain a pa
What is the Translation Lookaside Buffer (TLB) In a cached system, the base addresses of the last few referenced pages is maintained in registers known as the TLB that aids in
Q. Explain about Spooling? Acronym for simultaneous peripheral operations on line. Spooling denotes to putting jobs in a buffer, a special area in memory or on a disk where
define semaphore. how can we use semaphore to deal with n-process critical section problem.
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