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[Eugen Kubowsky <1160501@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Hi, I think there is a bug in the /examples/test/performance/checkPerf.py script.
I'm using the following script to iterate over a given number of cpu cores with the --performance:
<code>
#!/bin/bash
#start script via "bash yadeBuiltInPerformanceTest.sh MIN MAX >> ~/yadeBuiltInPerformance.log" starten
# MIN: number of cores to start with
# MAX: maximum number of cores to test
echo "Beginning Yade Performance Test"

BEGIN=$1
END=$2

for (( I=$BEGIN; $I <= $END; I++ )); do
	DATE=$(date)
	echo $I" core(s); beginning: "$DATE
	yade-daily -j$I --performance >> ~/yadelogBuiltInPerformance_j$I.log
done

DATE=$(date)
echo "Ende: "$DATE
</code>

But if I look at the yadelogBuiltInPerformance_j$I.log files, my output is messed up.
Instead of showing up at the very end of the file, the CPU info produced by this line of code in checkPerf.py
<code>print "CPU info", os.system('cat /proc/cpuinfo')</code>
disruptes the performance output. I.e. from line 200 to 1031 you'll find CPU info.
I'm using Yade 3+3463+44~precise1 but the source code I looked at was the latest one.

Thanks, Eugen

** Affects: yade
     Importance: Undecided
         Status: New


** Tags: cpu info performance

** Attachment added: "logfile of --performance"
   https://bugs.launchpad.net/bugs/1160501/+attachment/3599142/+files/yadelogBuiltInPerformance_j1.log

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https://bugs.launchpad.net/bugs/1160501

Title:
  --performance output disrupted by /proc/cpuinfo

Status in Yet Another Dynamic Engine:
  New

Bug description:
  Hi, I think there is a bug in the /examples/test/performance/checkPerf.py script.
  I'm using the following script to iterate over a given number of cpu cores with the --performance:
  <code>
  #!/bin/bash
  #start script via "bash yadeBuiltInPerformanceTest.sh MIN MAX >> ~/yadeBuiltInPerformance.log" starten
  # MIN: number of cores to start with
  # MAX: maximum number of cores to test
  echo "Beginning Yade Performance Test"

  BEGIN=$1
  END=$2

  for (( I=$BEGIN; $I <= $END; I++ )); do
  	DATE=$(date)
  	echo $I" core(s); beginning: "$DATE
  	yade-daily -j$I --performance >> ~/yadelogBuiltInPerformance_j$I.log
  done

  DATE=$(date)
  echo "Ende: "$DATE
  </code>

  But if I look at the yadelogBuiltInPerformance_j$I.log files, my output is messed up.
  Instead of showing up at the very end of the file, the CPU info produced by this line of code in checkPerf.py
  <code>print "CPU info", os.system('cat /proc/cpuinfo')</code>
  disruptes the performance output. I.e. from line 200 to 1031 you'll find CPU info.
  I'm using Yade 3+3463+44~precise1 but the source code I looked at was the latest one.

  Thanks, Eugen

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