How to interpret Papi output

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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:
 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 ?
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MKTEMP(1)							   User Commands							 MKTEMP(1)

mktemp - create a temporary file or directory
mktemp [OPTION]... [TEMPLATE]
Create a temporary file or directory, safely, and print its name. TEMPLATE must contain at least 3 consecutive `X's in last component. If TEMPLATE is not specified, use tmp.XXXXXXXXXX, and --tmpdir is implied. -d, --directory create a directory, not a file -u, --dry-run do not create anything; merely print a name (unsafe) -q, --quiet suppress diagnostics about file/dir-creation failure --suffix=SUFF append SUFF to TEMPLATE. SUFF must not contain slash. This option is implied if TEMPLATE does not end in X. --tmpdir[=DIR] interpret TEMPLATE relative to DIR. If DIR is not specified, use $TMPDIR if set, else /tmp. With this option, TEMPLATE must not be an absolute name. Unlike with -t, TEMPLATE may contain slashes, but mktemp creates only the final component -p DIR use DIR as a prefix; implies -t [deprecated] -t interpret TEMPLATE as a single file name component, relative to a directory: $TMPDIR, if set; else the directory specified via -p; else /tmp [deprecated] --help display this help and exit --version output version information and exit
Written by Jim Meyering and Eric Blake.
Report mktemp bugs to GNU coreutils home page: <> General help using GNU software: <> Report mktemp translation bugs to <>
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
mkstemp(3), mkdtemp(3), mktemp(3) The full documentation for mktemp is maintained as a Texinfo manual. If the info and mktemp programs are properly installed at your site, the command info coreutils 'mktemp invocation' should give you access to the complete manual. GNU coreutils 8.5 February 2011 MKTEMP(1)

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