Talk:Performance

Integration with tests

We could write a script that does the benchmark while running the test. It would even be possible to automatically post it (with the user's consent, of course). — Oli 16:03, 14 November 2008 (UTC)

Scaling

How to run scaling tests/testing methodology:

Use test_scaling.py which in turn uses calc_testjobs_linux.sh.

cd testjobs
test_scaling.py NSLOTS

where NSLOTS is the maximum number of available cpus/cores. Results are the files

scaling.xvg      # numbers
scaling.png      # graphs

• Only measures wall time, hence must be run on an empty machine.
• Uses date +%s so accuracy is limited to seconds.
• No repeat runs; results may vary slightly.

Manually: Use updated calc_testjobs_linux.sh

DATA=scaling.xvg
MAXSLOTS=8
echo -e "# scaling for Hippo\n# numthreads walltime/s" > $DATA
for NSLOTS in `seq $MAXSLOTS`; do 
  echo "-- NSLOTS = $NSLOTS"; 
  ../../calc_testjobs_linux.sh -n $NSLOTS  walp_octane_NPT_sp_MD \
    | awk '/BENCHMARK/ {print $3, $4}' >> $DATA; 
done

All the above remarks apply here, too.