Question: When a program is adapted to run on multiple processors in a multiprocessor system, the execution time on each processor is comprised of computing time

When a program is adapted to run on multiple processors in a multiprocessor system, the execution time on each processor is comprised of computing time and the overhead time required for locked critical sections and/or to send data from one processor to another. Assume a program requires t = 100s of execution time on one processor. When run p processors, each processor requires t/p s, as well as an additional 4s of overhead, irrespective of the number of processors. What is in the program counter?

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