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[Klaus Thoeni <1290194@xxxxxxxxxxxxxxxxxx>]

Hi Anton,

you are right, changing the script as follows has the same effect:

# -*- coding: utf-8
import subprocess

numberTests = 10

for z in range(numberTests):
	#O.reset()
	
	bodies= O.bodies.append(pack.regularHexa(pack.inSphere((Vector3(0.0,0.0,0.0)),0.5),radius=0.01,gap=0))
	print "number of bodies:", len(O.bodies)

	for b in bodies:
		O.bodies.erase(b)

	cmd = "ps -o vsz -p `pgrep yade` | grep -v VSZ"
	process = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
	meminfo = process.communicate()[0].strip()
	print "Yade memory usage: ", meminfo, "kB"
	
	cmd = "egrep 'MemFree' /proc/meminfo"
	process = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
	meminfo = process.communicate()[0]
	print meminfo

sys.exit(0)

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https://bugs.launchpad.net/bugs/1290194

Title:
  O.reset() does not free memory

Status in Yet Another Dynamic Engine:
  New

Bug description:
  O.reset() does not free the memory, i.e. if you run a series of
  simulations in a loop the memory usage is accumulating. Here is a
  script which reproduces the issue (it should affect all versions):

  # -*- coding: utf-8
  import subprocess

  numberTests = 10

  for z in range(numberTests):
  	
  	O.reset()
  	
  	O.bodies.append(pack.regularHexa(pack.inSphere((Vector3(0.0,0.0,0.0)),0.5),radius=0.01,gap=0))
  	print "number of bodies:", len(O.bodies)

  	cmd = "ps -o vsz -p `pgrep yade` | grep -v VSZ"
  	process = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
  	meminfo = process.communicate()[0].strip()
  	print "Yade memory usage: ", meminfo, "kB"
  	
  	cmd = "egrep 'MemFree' /proc/meminfo"
  	process = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
  	meminfo = process.communicate()[0]
  	print meminfo

  sys.exit(0)

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