How can I debug cache coherence issues in my application?

How can I debug cache coherence issues in my application?

Debugging cache coherence issues often involves checking memory consistency across multiple processors. Have you identified any specific symptoms?

Yes, I'm seeing inconsistent data being read by different threads.

That could indicate a cache coherence problem. You might want to use tools like Intel VTune or Valgrind to analyze memory access patterns.

What specific metrics should I look for in these tools?

Look for metrics related to cache hits, misses, and coherence traffic. These can help pinpoint where the issues are occurring.

Thanks! Are there any common pitfalls I should be aware of?

Absolutely! Common pitfalls include false sharing and improper memory barriers. Make sure to review your synchronization mechanisms.