Unix/Linux Go Back    


High Performance Computing Message Passing Interface (MPI) programming and tuning, MPI library installation and management, parallel administration tools, cluster monitoring, cluster optimization, and more HPC topics.

How to interpret Papi output

High Performance Computing


Tags
papi, papi-cache

Closed    
 
Thread Tools Search this Thread Display Modes
    #1  
Old Unix and Linux 07-30-2010
vishwamitra vishwamitra is offline
Registered User
 
Join Date: Apr 2009
Last Activity: 22 August 2011, 9:21 AM EDT
Posts: 27
Thanks: 1
Thanked 1 Time in 1 Post
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 ?
Sponsored Links
Closed

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Linux More UNIX and Linux Forum Topics You Might Find Helpful
Thread Thread Starter Forum Replies Last Post
Can someone interpret this -- not sure Straitsfan Shell Programming and Scripting 6 05-07-2010 03:20 PM
How to interpret TOP dj_jay_smith UNIX for Dummies Questions & Answers 7 05-23-2009 01:22 PM
Please interpret. supacow UNIX for Dummies Questions & Answers 1 05-30-2008 04:11 AM
How Do We Interpret This ? dummy_needhelp Shell Programming and Scripting 2 10-31-2007 03:07 PM
sar -q - how to Interpret these results SarNovice UNIX for Dummies Questions & Answers 2 10-25-2007 02:54 PM



All times are GMT -4. The time now is 04:35 AM.