v2.1alpha2 crash

Use this forum for general user support and related questions.
Fox
Posts: 32
Joined: Sat Mar 31, 2018 11:17 am

v2.1alpha2 crash

Post by Fox » Tue Jul 31, 2018 10:51 pm

I get crash with v2.1alpha2-win64-opencl and never with v2.1alpha1 (Windows 10, CPU BiDir).
Last thing i see in log is embree build.
It's also with path CPU and also with non openCL build, in Blender and in luxcoreui



the instruction at 0x00007FFEC370E660 referenced memory at 0x0000000000000000. The memory could not be read.

Faulting application name: luxcoreui.exe, version: 0.0.0.0, time stamp: 0x5b363d46
Faulting module name: ntdll.dll, version: 10.0.16299.64, time stamp: 0x493793ea
Exception code: 0xc0000374
Fault offset: 0x00000000000f87bb
Faulting process ID: 0x1cb8
Faulting application start time: 0x01d4291cbe27badb
Faulting application path: D:\luxcorerender-v2.1alpha2-win64-opencl\luxcoreui.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report ID: 43cc000f-f3a9-4590-bf38-cd18525f07c2
Faulting package full name:
Faulting package-relative application ID:

User avatar
Dade
Developer
Posts: 1187
Joined: Mon Dec 04, 2017 8:36 pm

Re: v2.1alpha2 crash

Post by Dade » Tue Jul 31, 2018 11:40 pm

Can you post the scene causing the crash :?:
Support LuxCoreRender project with salts and bounties

Fox
Posts: 32
Joined: Sat Mar 31, 2018 11:17 am

Re: v2.1alpha2 crash

Post by Fox » Wed Aug 01, 2018 3:01 pm

The full scene is large. If i replicate the crash with smaller scene i will post it.
But the large scene is here:
https://drive.google.com/file/d/1A5hfYL ... sp=sharing

User avatar
Sharlybg
Supporting Users
Posts: 642
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: v2.1alpha2 crash

Post by Sharlybg » Wed Aug 01, 2018 4:49 pm

Fox wrote:
Wed Aug 01, 2018 3:01 pm
The full scene is large. If i replicate the crash with smaller scene i will post it.
But the large scene is here:
https://drive.google.com/file/d/1A5hfYL ... sp=sharing
I think there is a lot to do with optimization here

1------> there is no reason to keep theses 4 larges heavy poly wall block ( i mean the displacement effect on them can be easily simulated by a good normal map).

2------> when working with Luxcore always use real object size : yuor scene seem to be 10X bigger.

3------> Also 16k hdr for interior can be sometimes an overkilling situation. just use low resolution map for lighting and render with transparent backgroung and finally use compositing to mix your render with a high resolution background.
Support LuxCoreRender project with salts and bounties

Fox
Posts: 32
Joined: Sat Mar 31, 2018 11:17 am

Re: v2.1alpha2 crash

Post by Fox » Wed Aug 01, 2018 5:31 pm

You are right, the scene is total overkill.

User avatar
Dade
Developer
Posts: 1187
Joined: Mon Dec 04, 2017 8:36 pm

Re: v2.1alpha2 crash

Post by Dade » Thu Aug 02, 2018 9:38 am

Fox wrote:
Wed Aug 01, 2018 3:01 pm
The full scene is large. If i replicate the crash with smaller scene i will post it.
But the large scene is here:
https://drive.google.com/file/d/1A5hfYL ... sp=sharing
I run out of memory when trying to load the scene with 16GB of ram (+8GB of swap file). Unfortunately, I can not try it.
Support LuxCoreRender project with salts and bounties

Fox
Posts: 32
Joined: Sat Mar 31, 2018 11:17 am

Re: v2.1alpha2 crash

Post by Fox » Thu Aug 02, 2018 3:59 pm

Sorry Dade.
Here is 2.5M verts model. It crashes too.
https://drive.google.com/file/d/1n9Tor5 ... sp=sharing

User avatar
Dade
Developer
Posts: 1187
Joined: Mon Dec 04, 2017 8:36 pm

Re: v2.1alpha2 crash

Post by Dade » Fri Aug 03, 2018 10:12 am

Fox wrote:
Thu Aug 02, 2018 3:59 pm
Sorry Dade.
Here is 2.5M verts model. It crashes too.
https://drive.google.com/file/d/1n9Tor5 ... sp=sharing
This scene crash for me when I try to render because I still run out of memory. This is due to the image resolution (3620x5430). If I reduce the resolution to 20%, it works fine.
The very high memory usage is due to the very high resolution combined with the use of 4 radiance groups (aka light groups).

Is the same for you ? Does it still crash if you reduce the rendering resolution ?

P.S. using a max. eye/light path of 128+128 is a huge overkill, you can more than double the rendering performance by using something like 12+12.
Support LuxCoreRender project with salts and bounties

Fox
Posts: 32
Joined: Sat Mar 31, 2018 11:17 am

Re: v2.1alpha2 crash

Post by Fox » Fri Aug 03, 2018 2:43 pm

I did 800 x 1200 pix and still crashes with 10-11GB of memory use.
No crash in alpha1, the memory use goes there to 14GB that leaves 90% free memory.

User avatar
Dade
Developer
Posts: 1187
Joined: Mon Dec 04, 2017 8:36 pm

Re: v2.1alpha2 crash

Post by Dade » Sat Aug 04, 2018 8:46 pm

Fox wrote:
Fri Aug 03, 2018 2:43 pm
I did 800 x 1200 pix and still crashes with 10-11GB of memory use.
No crash in alpha1, the memory use goes there to 14GB that leaves 90% free memory.
I start to have the feeling is a regression I have already fixed so I can not reproduce the problem with the latest sources. I will try if it happens with alpha2 sources.
Support LuxCoreRender project with salts and bounties

Post Reply