Question

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a. The parallelism and the interaction operations are the sources of Overhead, list the four different types of overhead and briefly explain each one.

Answer 1

Overhead in parallel computing includes communication, synchronization, load balancing, and software related costs, which all refer to additional work required to manage parallel processes reducing overall efficiency.

Step-by-step explanation:

In parallel computing, overhead is the additional work related to the management of parallel processes which ultimately reduces efficiency. The four different types of overhead in parallel computing are:

1. Communication Overhead: This involves the cost of data transfer between processors. It includes the time taken to send and receive messages as well as the time spent waiting for the available communication bandwidth.
2. Synchronization Overhead: This is due to the requirement for processors to wait and synchronize with each other to ensure data consistency and correctness of the computation.
3. Load Balancing Overhead: It refers to the cost of distributing work among processors evenly. Imperfect load balancing can lead to some processors being idle while others are overburdened.
4. Software Overhead: This encompasses the extra time taken by parallel algorithms over their sequential counterparts due to additional code for managing parallelism