I wanted to know if it's possible, that somebody give me a detailed explanation of the following sentence:
"PAPI makes sure the underlying operating system or library guards against overflow of counter values."
I wonder how this is achieved, maybe just by reset the counters to zero?. if that's the case, let me give you an example:
If I'm measuring L1 Cache misses and I get a "X" when PAPI reads the counter, is "X" the actual number or maybe it was a higher value which raise an overflow protection plus "X"?... How can I be sure there weren't any overflow protection when I read a counter?