Download Algorithms and Parallel Computing (Wiley Series on Parallel by Fayez Gebali PDF

By Fayez Gebali

There's a software program hole among the strength and the functionality that may be attained utilizing today's software program parallel application improvement instruments. The instruments desire guide intervention through the programmer to parallelize the code. Programming a parallel machine calls for heavily learning the objective set of rules or program, extra so than within the conventional sequential programming now we have all discovered. The programmer needs to be conscious of the communique and information dependencies of the set of rules or program. This ebook presents the options to discover the potential how one can application a parallel desktop for a given software.

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Extra info for Algorithms and Parallel Computing (Wiley Series on Parallel and Distributed Computing)

Example text

3 Memory hierarchy. 34 Chapter 2 Enhancing Uniprocessor Performance to it by the shown lines. Data migrate to the processor from the bottom of the hierarchy. Likewise, data from the processor migrates downwards down the hierarchy. The thickness of each line symbolizes the speed of communication of the line. For example, the processor can directly communicate with its registers and the cache at high speed, matching the clock speed of the processor. Both of these memory components are very fast since they are always implemented on the same chip as the CPU.

It should be mentioned that the level of data or task granularity can change the algorithm from one class to another. For example, adding two matrices could be an example of a serial algorithm if our basic operation is adding two matrix elements at a time. However, if we add corresponding rows on different computers, then we have a row-based parallel algorithm. We should also mention that some algorithms can contain other types of algorithms within their tasks. The simple matrix addition example serves here as well.

8. To associate a line in the cache with a block in the memory, we need 12 bits composed of the 12 tag bits (Fig. 8). 6 Set-Associative Mapping Set-associative mapping could be thought of as a combination of direct and associative mapping.

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