I am trying to measure L1 cache miss for a code segment using papi_start and stop. I her my ave two issues:
1. After the execution of the program segment, i counted the values by calling read.
the after stop() values are slightly higher that after read() values. What might be the reason here? I am not performing any other task in between.
2. If someone else is also running some other code (and not using papi), will it effect the cache miss count? Will PAPI only count misses for my code segment or all cache misses happened during that time interval?