Operating Systems - Process vs Thread - Key Differences
If you extend a multithreaded application to run across multiple CPU cores, which new challenge must you address that was not present in the single-core multithreaded version?
If you extend a multithreaded application to run across multiple CPU cores, which new challenge must you address that was not present in the single-core multithreaded version?
hard🎤 Interviewer Follow-up Q10 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand multicore memory model
Multiple cores have separate caches, requiring synchronization to maintain memory consistency.Step 2: Analyze new challenges
Cache coherence protocols and memory barriers become critical to avoid stale data.Step 3: Evaluate options
Synchronization must handle memory consistency across cores due to cache coherence issues correctly identifies the need to handle memory consistency across cores.Step 4: Discard incorrect options
Threads still share memory; context switch overhead does not necessarily increase; threads do not serialize automatically.Final Answer:
Option C -> Option CQuick Check:
Multicore requires synchronization for cache coherence [OK]
Quick Trick: Multicore needs synchronization for cache coherence [OK]
Common Mistakes:
MISTAKES- Thinking threads lose shared memory on multicore
- Assuming context switch overhead always increases
Trap Explanation:
PITFALL- Candidates overlook hardware-level memory consistency challenges in multicore systems.
Interviewer Note:
CONTEXT- Tests deep understanding of threading challenges on multicore architectures.
Master "Process vs Thread - Key Differences" in Operating Systems
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Operating Systems Quizzes