BUG - open3d crash rhino

Hi @eirannejad

One of the recent updates causes Rhino to crash on Mac when using Open3D. I’m not sure if it’s an Open3D or Rhino issue, but the code works fine on Windows.

I’ve tried reinstalling the environment.

Here is an example:
open3d eks.gh (5.1 KB)

# r: numpy
# r: scikit-learn
# r: open3d

import open3d as o3d
import numpy as np
import Rhino.Geometry as rg

pcloud_pts = pcloud.GetPoints()
pts_lst = [[p.X,p.Y,p.Z] for p in pcloud_pts]

pts_arr = np.array(pts_lst)

o3d_pcloud = o3d.geometry.PointCloud()
o3d_pcloud.points = o3d.utility.Vector3dVector(pts_arr)
KDTree = o3d.geometry.KDTreeSearchParamKNN(20)
o3d_pcloud.estimate_normals(search_param=KDTree, fast_normal_computation=True)

o3d_pcloud.orient_normals_to_align_with_direction() # <--- this line makes rhino crashe

best,
Johan

@Johan_Lund_Pedersen Would you mind sharing your SystemInfo? Also do you know a version of Rhino that this script works on and does not crash?

Hi @eirannejad.

Thank you for getting back to me. Here’s the information:
Remember to uncomment the line in the script. :slight_smile:

best,
Johan

Rhino 8 SR19 2025-5-12 (Rhino 8, 8.19.25132.01002, Git hash:master @ 57e3eb280b0f32cbe59f53a554be5e8ffa66fc36)
License type: Educational, build 2025-05-12
License details: Cloud Zoo

Apple macOS Version 15.5 (Build 24F74) (Physical RAM: 8GB)
Mac Model Identifier: iMac21,1
Language: en-DK (MacOS default)
.NET 7.0.0

Metal GPU Family Apple 7
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
  Apple M1
    iMac (2240 x 1260 @ 60.00Hz)
    MAG321UP OLED (3840 x 2160 @ 120.00Hz)
GPU Vendor: Apple

USB devices
  VLI Inc.: USB 2.0 BILLBOARD
  Apple Inc.: Apple Watch Magnetic Charging Cable

Bluetooth devices
  None

Third party kernel extensions
  None

Third party plugins
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Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
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1 Like

@Johan_Lund_Pedersen

This ended up being more complicated that I thought:

  • Does not crash on Windows (open3d v0.19.0 gets installed)
  • Works on independent python 3.9.10 on macOS (open3d v0.18.0 gets installed as that is the only one with arm64 binaries)
  • Verified open3d that gets installed under Rhino is the same binary as the one installed under independent python 3.9.10
  • Installing open3d under site-packages still crashes
  • Disabling pythonnet scope pre/post shenanigans still crashes
  • Only clean installing open3d still crashes

This is the call stack from crashing thread when calling orient_normals_to_align_with_direction():

5   libsystem_platform.dylib      	       0x18fd8c624 _sigtramp + 56
6   pybind.cpython-39-darwin.so   	       0x3db4ef1c8 0x3d9bcc000 + 26358216
7   pybind.cpython-39-darwin.so   	       0x3db55e48c 0x3d9bcc000 + 26813580
8   pybind.cpython-39-darwin.so   	       0x3db33256c 0x3d9bcc000 + 24536428
9   libpython3.9.dylib            	       0x3bb7173a0 cfunction_call + 84
10  libpython3.9.dylib            	       0x3bb6d4a8c _PyObject_MakeTpCall + 360
11  libpython3.9.dylib            	       0x3bb6d71ac method_vectorcall + 216
12  libpython3.9.dylib            	       0x3bb7aac20 call_function + 416
13  libpython3.9.dylib            	       0x3bb7a82c0 _PyEval_EvalFrameDefault + 23108
14  libpython3.9.dylib            	       0x3bb7abb48 _PyEval_EvalCode + 2988
15  libpython3.9.dylib            	       0x3bb7a27b4 PyEval_EvalCode + 80

I managed to find a smaller reproducible crash case:

import open3d as o3d
import numpy as np

pts_arr = np.array([(0, 0, 0), (1, 1, 1)])
o3d.utility.Vector3dVector(pts_arr)

This is the call stack from crashing thread in the simple script above:

5   libsystem_platform.dylib      	       0x18fd8c624 _sigtramp + 56
6   pybind.cpython-39-darwin.so   	       0x3cd9731c8 0x3cc050000 + 26358216
7   pybind.cpython-39-darwin.so   	       0x3cd977134 0x3cc050000 + 26374452
8   pybind.cpython-39-darwin.so   	       0x3cdbc11c8 0x3cc050000 + 28774856
9   pybind.cpython-39-darwin.so   	       0x3cdbc0ebc 0x3cc050000 + 28774076
10  pybind.cpython-39-darwin.so   	       0x3cd7b656c 0x3cc050000 + 24536428
11  libpython3.9.dylib            	       0x3aadd73a0 cfunction_call + 84
12  libpython3.9.dylib            	       0x3aad94a8c _PyObject_MakeTpCall + 360
13  libpython3.9.dylib            	       0x3aad972a0 method_vectorcall + 460
14  libpython3.9.dylib            	       0x3aadf7904 slot_tp_init + 252
15  libpython3.9.dylib            	       0x3aadee970 type_call + 352
16  pybind.cpython-39-darwin.so   	       0x3cd79dc3c 0x3cc050000 + 24435772
17  libpython3.9.dylib            	       0x3aad94a8c _PyObject_MakeTpCall + 360
18  libpython3.9.dylib            	       0x3aae6ac80 call_function + 512
19  libpython3.9.dylib            	       0x3aae682c0 _PyEval_EvalFrameDefault + 23108
20  libpython3.9.dylib            	       0x3aae6bb48 _PyEval_EvalCode + 2988
21  libpython3.9.dylib            	       0x3aae627b4 PyEval_EvalCode + 80

It will not crash if I change the int values in the point tuple to float. That’s the only clue I have right now.

Both crashes are Segmentation Faults in .../open3d/cpu/pybind.cpython-39-darwin.so

What To Do

We need debug builds of open3d to detect what is going on when crashing. I think it is safe to get the developers involved and see if they can reproduce the crash and inspect in debugger. This also might be an issue with open3d v0.18.0 maybe. I see the newer 0.19.0 does not have arm64 for python 3.9 :thinking:

I will still keep searching to see if I can understand why this crash happens.

RH-87749 open3d script crashes Rhino

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@eirannejad

Okay, that sounds complete. :slight_smile: Thanks for looking into it.

Best, Johan

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Also, as a lead. The code worked a couple of rhino SR versions ago.

Was it the same open3d version?

I’m not sure. I didn’t specify a version. It may have been reinstalled with the new Rhino service release.

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