LinuxQuestions.org - How to interpret Papi output

I have collected data of Number of L2 cache misses using PAPI. I had run an MPI application with 4 threads (mpirun -np 4) and each thread reads the cache misses in L2. Each thread outputs data for every timestamp. eg:

Code:

Timestamp              data

xxx530    thread# 0  2136

xxx531    thread# 0  3217

..          .          .

.            .          . 

.            .          .

.            .          .

xxx550      thread# 0  412334255



xxx530      thread #1    2456

xxx531      thread#1    4243

xxx532      thread #1    4567 

and so on

Now my qstn , is whether i shud add all the cache miss values at time stamp xxx530 for thread 0,1, 2 and 3 OR shud i take the max-value for thrreda0,1,2,3 for timestamp xxx530 ?