Computer Science · Operating Systems
Consider a program that spawns 20 threads to find the sum of elements in a shared array of size 200. Each thread i takes elements A[10i] to A[10i + 9], computes a local sum loc_sum[i], and eventually adds loc_sum[i] to a shared global variable tot_sum for the total sum. Which operation MUST be placed inside a critical section?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Neither Reading array values nor Adding to tot_sum
- 2Both Reading array values and Adding to tot_sum
- 3Adding to tot_sum✓
- 4Reading array values
Correct answer
Adding to tot_sum
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