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Factor Causing Parallel Overheads
Figure clearly explains that the performance metrics are not able to achieve a linear curve in comparison to the enhance in number of processors in the parallel computer. The reason for the above is the presence of overheads in the parallel computer which may degrade the performance. The well-known sources of overheads in a parallel computer are:
1) Cost involved in inter-processor communication2) Uneven load distribution3) Synchronization4) Parallel Balance Point
The following section explains them in detail.
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