I have a question regarding using PAPI counter events to get details of the cache coherence overheads associated with different kernels in a parallel application (In SGI Altix 4700 machine).
> PAPI_CA_SNP 0x80000009 Yes No Requests for a snoop
> PAPI_CA_INV 0x8000000c Yes Yes Requests for cache line invalidation
Is it correct to assume that these could be used to derive invalidation to snooping ratio for a particular parallel kernel?
Thanks for your support!