Decimate out of memory crash #61742

New Issue

Sebastian · 2019-02-20T11:24:04+01:00

Sebastian commented

2019-02-20 11:24:04 +01:00

System Information
Operating system:
Ubuntu 18.10

Graphics card:
GTX 1080
GTX 1060

Blender Version
Broken:
2.80, ec471a9b1c, blender2.8, 2019-02-15, 23:44, as found on the splash screen

Short description of error

I have an object with 27 million faces (I know that is a lot).
In general Blender handles this fine.
But whenever i try to use a Decimate modifier blender kills itself after a short while without an errormessage or anything else.

just the message "killed" appears in the console.

This is reproduceable on my machine, only difference is the time after it crashes (between 5-30sec)

My first assumption is: it is running out of ram, since it always crashes after it reaches 100% of 32gb (see image)

i would at least expect an error message to notify the user of the out of memory issue.

Exact steps for others to reproduce the error
Load ChainAnimation.blend ChainAnimation.blend
Apply Array modifier
Add Decimate modifier
set it to any number below 1
wait

**System Information** Operating system: Ubuntu 18.10 Graphics card: GTX 1080 GTX 1060 **Blender Version** Broken: 2.80, ec471a9b1c14, blender2.8, 2019-02-15, 23:44, as found on the splash screen **Short description of error** I have an object with 27 million faces (I know that is a lot). In general Blender handles this fine. But whenever i try to use a Decimate modifier blender kills itself after a short while without an errormessage or anything else. just the message "killed" appears in the console. This is reproduceable on my machine, only difference is the time after it crashes (between 5-30sec) My first assumption is: it is running out of ram, since it always crashes after it reaches 100% of 32gb (see image) ![ram.png](https://archive.blender.org/developer/F6669167/ram.png) i would at least expect an error message to notify the user of the out of memory issue. **Exact steps for others to reproduce the error** Load ChainAnimation.blend [ChainAnimation.blend](https://archive.blender.org/developer/F6669176/ChainAnimation.blend) Apply Array modifier Add Decimate modifier set it to any number below 1 wait

Sebastian commented

2019-02-20 11:24:04 +01:00

Added subscriber: @hrkrx

Sebastian Parborg commented

2019-02-20 16:01:39 +01:00

Added subscriber: @ZedDB

Sebastian Parborg commented

2019-02-20 16:01:39 +01:00

Changed status from 'Open' to: 'Archived'

Sebastian Parborg closed this issue

2019-02-20 16:01:39 +01:00

Sebastian Parborg self-assigned this 2019-02-20 16:01:39 +01:00

Sebastian Parborg commented

2019-02-20 16:01:39 +01:00

It is not blender that kills itself. It it the linux kernel that kills the process as it has run out of memory.

Stephen Swaney commented

2019-02-20 16:26:40 +01:00

Added subscriber: @StephenSwaney

Stephen Swaney commented

2019-02-20 16:26:40 +01:00

You didn't mention how much memory you actually have, but since you are running out, you might want to check the process ulimit and/or create a swap file if you don't have one.

Sebastian commented

2019-02-21 11:54:27 +01:00

@ZedDB
Thank you for answering :)
Indeed that seems to be the Issue.

@StephenSwaney
As i wrote in the description

it reaches 100% of 32gb

normally that is enough for everything.
I was curious how Blender would handle insane amounts of faces, but i didn't expect it to run out of memory on a decimate modifier.

@ZedDB Thank you for answering :) Indeed that seems to be the Issue. @StephenSwaney As i wrote in the description > it reaches 100% of 32gb normally that is enough for everything. I was curious how Blender would handle insane amounts of faces, but i didn't expect it to run out of memory on a decimate modifier.

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Decimate out of memory crash #61742