Extremely slow after stopping rendering

I’m using the Rhino render engine and I stopped a big rendering after 1.5 hours. I would like to save it, but anything I do takes forever, even though the rendering is over. I can’t even click the save button to save the rendered image.
Is there any way to keep the rending and not have to force quit rhino?


how large is the rendering (pixel size) and can you post _SystemInfo? Did you hit the render button or is this a raytraced viewport?

24.92GB smells like some memory is leaking

I used the render command. The image is 8000x5000

I’m running the M1 Max with 32GB

okay, at that resolution in might be not too excessive in terms of memory usage. I just tried to render a fairly big file on a mbp with only 16GB and that seems to work even though memory usage goes all the way to about 18GB, I was able to save out the 8000 x 5000 pixel image. I guess to track down you issue, I still first need your _SystemInfo, and maybe a file that illustrates this issue. Please run _SystemInfo in Rhino and post back the results.

Hi, here’s the system info:

Rhino 7 SR29 2023-4-17 (Rhino 7, 7.29.23107.03002, Git hash:master @ 5f05ef3a2eea3d910c4c2fb79ccc75b413d33ca7)
License type: Educational, build 2023-04-17
License details: Cloud Zoo

Apple macOS Version 13.3.1 (a) (Build 22E772610a) (Physical RAM: 32Gb)
Rhino is running in Rosetta2 on Apple Silicon
Mac Model Identifier: MacBookPro18,2
Language: en-GB (MacOS default)

Apple M1 Max (OpenGL ver:4.1 Metal - 83.1)

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: Apple
Render version: 4.1
Shading Language: 4.10
Maximum Texture size: 16384 x 16384
Z-Buffer depth: n/a
Maximum Viewport size: 16384 x 16384
Total Video Memory: 21845 MB
Graphics: Apple M1 Max
Displays: Unknown (255dpi 2x)

Graphics processors
Apple M1 Max
Color LCD (1728 x 1117 @ 120.00Hz)

USB devices

Bluetooth devices

Third party kernel extensions

Third party plugins

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 7.29.23107.3002
/Applications/Rhino 7.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 7.29.23107.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 7.29.23107.3002
/Applications/Rhino 7.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 7.29.23107.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 7.29.23107.3002
/Applications/Rhino 7.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 7.29.23107.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 7.29.23107.3002
/Applications/Rhino 7.app/Contents/PlugIns/Displacement.rhp “Displacement” 7.29.23107.1002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoRenderCycles.rhp “Rhino Render” 7.29.23107.3002
/Applications/Rhino 7.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 7.29.23107.3002
/Applications/Rhino 7.app/Contents/PlugIns/RhinoRender.rhp “Legacy Rhino Render” 7.29.23107.1002

And here’s a screenshot of what I’m trying to render. In the meantime, I managed to save the file. Just the waiting time for any button that I click in the rendering window is between 5 and 30 minutes after I stop rendering

can you upload the file in question so that I can see if there is something in the file that is causing trouble? You can upload it here. Please link back to this thread if you decide to upload the file so I get notified, thanks

I just uploaded it, thanks!

I cannot reproduce that here, all stays normal and responsive after the rendering has ended, also, memory stays under 16GB, I will have to ask a colleague with an M1 to have a look at it

All right, I appreciate it.

we managed to reproduce it
RH-74769 After rendering, M1 mac becomes slow

Okay, so I’ll have to wait for an update that fixes this, right?

RH-74769 After rendering, M1 mac becomes slow

ought to be fixed in Rhino 8 for Mac.

1 Like