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Q. Timing in MPI program?
MPI_Wtime ( ) returns lapsed wall clock time in seconds because some random point in past. Elapsed time for program section is given by difference between MPI_Wtime values at starting and end of process. Process clocks aren't necessarily synchronised, so clock values aren't necessarily comparable across the processes and care should be taken in determining overall running time for parallel program. Even if clocks are openly synchronised variation across clocks still can't be expected to be considerably less than round-trip time for zero-length message between the processes.
What is RAM Bus technology? The key feature of RAM bus technology is a fast signalling method used to transfer information among chips. Instead of using signals that have volta
Q. Illustrate Header section of a device driver? Header comprises information which allows DOS to identify the driver. It also comprises pointers which allow it to chain to ot
State The advantages of specifying parameter assignments using defparam are: - This method always has precedence over specifying parameters at the instance of instantiation.
What is Read only memory (ROM) and Define the Use of it? A simple kind of ROM can be constructed from a decoder, Or gates, and a number of wires. Input
Why a task can n ot return a value? If tasks can return values then Let's take a look at the below example. A=f1(B)+f2(C); and f1 and f2 had delays of say 5 and 10? Whe
Cache Misses Compulsory misses - it is caused by initial access to a block that has never been in the cache (also called cold start misses Capacity miss - it is cause
The Boolean expression A‾.B + A.B‾ + A.B is equivalent to ? Ans. The Boolean expression A‾ .B + A. B‾+ A.B is equivalent to A + B (A‾ .B + A. B‾+ A.B = B( A‾ + A) + A. B‾ =
Personal Computer Software The personal computer software market has burgeoned from the past decade. Spreadsheets, Word processing, computer graphics, database managemen
The Concept of Concurrent and Parallel Execution Real world systems are concurrent in nature and computer science is about modeling the real world. Illustrations of real world
What is the number of control lines for a 8 - to - 1 multiplexer ? Ans. There are 3 control lines, for an 8 to 1 Multiplexer. The control signals are utilized to steer any one
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