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[Vasileios Angelidakis <question669206@xxxxxxxxxxxxxxxxxxxxx>]

Question #669206 on Yade changed:
https://answers.launchpad.net/yade/+question/669206

Description changed to:
I use the latest version of yade-daily to import some complex polyhedral
geometries from stl files using the "ymport" module and I keep getting
memory corruption errors (malloc(): memory corruption (fast):
0x00000000046ee478). I have seen some older posts on memory allocation-
related problems, but still don't know how to overcome mine. In every
run, a different number of grains is "ymported" before I get the error
and then the programm either shuts or stucks. In the latter case, the
CPU core that implements the specific task stays stuck at 100%.

For the sake of easy reproduceability, I created a simplified version of
the script, importing the same grain-shape several times (instead of
importing many different shapes). You can find this shape in the link
(https://www.dropbox.com/s/sdw0x32t0rgg7be/grainShape.stl?dl=0) and in
the following lines the simplified version of the script I use to
reproduce the error. Any help is welcome!

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# Packages
from yade import plot, polyhedra_utils,export,pack,ymport, qt
from yade.wrapper import *
import math
import numpy as np

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# Materials
m = PolyhedraMat()
m.density = 1.750 #ton/m^3 
m.young = 1e5 #kPa
m.poisson = 0.15
m.frictionAngle = 0.6 #rad
#m.young = 1E6 #Pa
#m.poisson = 20000/1E6

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# Shapes-Objects
for i in range(500):
	t=ymport.textPolyhedra('grainShape.stl', m, shift=Vector3(i*0.001, 0, 0), scale=1, orientation=Quaternion((1, 0, 0), 0))
	O.bodies.append(t)
#	print i

qt.View()
#qt.Controller()
O.saveTmp()
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

The error I get can be found here:
https://www.dropbox.com/s/p1uazlruxq1st3z/Yadedaily%20error.txt?dl=0

Thank you in advance!

Vasileios

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