Crash on window size change (v1.10.0)

[Danilo Nishimura]

Hi there,

I'm now working from home, and starting from this latest version, I'm having consistent crashes when maximizing the window. This wasn't happening when I used the software on my office computer, and wasn't happening on previous versions (standard, not pro or unlimited versions).

Video: https://youtu.be/dJbqjMQJooU

If you guys need anything to help determine the cause of the crash, I'm here to help.

[Alexis Vaisse]

Hi Danilo,

It seems that it crashes when the 3D viewport becomes big. Maybe it could be related to your GPU.
What GPU do you have?

[Danilo Nishimura]

It's a GTX 1080


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System Information
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Time of this report: 3/17/2020, 11:39:59
Machine name: DANILO-PC
Machine Id: {526B085B-874A-4545-BF22-8A7B393C7B7D}
Operating System: Windows 10 Pro 64-bit (10.0, Build 18362) (18362.19h1_release.190318-1202)
Language: Portuguese (Regional Setting: Portuguese)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: BIOS Date: 02/05/10 19:13:52 Ver: 08.00.10 (type: BIOS)
Processor: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz (8 CPUs), ~3.4GHz
Memory: 16384MB RAM
Available OS Memory: 16290MB RAM
Page File: 11444MB used, 5870MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 12
DX Setup Parameters: Not found
User DPI Setting: 96 DPI (100 percent)
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Not Supported
DirectX Database Version: Unknown
DxDiag Version: 10.00.18362.0387 64bit Unicode



---------------
Display Devices
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Card name: NVIDIA GeForce GTX 1080
Manufacturer: NVIDIA
Chip type: GeForce GTX 1080
DAC type: Integrated RAMDAC
Device Type: Full Device (POST)
Device Key: Enum\PCI\VEN_10DE&DEV_1B80&SUBSYS_33671462&REV_A1
Device Status: 0180200A [DN_DRIVER_LOADED|DN_STARTED|DN_DISABLEABLE|DN_NT_ENUMERATOR|DN_NT_DRIVER]
Device Problem Code: No Problem
Driver Problem Code: Unknown
Display Memory: 16224 MB
Dedicated Memory: 8079 MB
Shared Memory: 8145 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
HDR Support: Not Supported
Display Topology: Extend
Display Color Space: DXGI_COLOR_SPACE_RGB_FULL_G22_NONE_P709
Color Primaries: Red(0.650391,0.333008), Green(0.332031,0.623047), Blue(0.157227,0.052734), White Point(0.313477,0.329102)
Display Luminance: Min Luminance = 0.500000, Max Luminance = 270.000000, MaxFullFrameLuminance = 270.000000
Monitor Name: Generic PnP Monitor
Monitor Model: VS248
Monitor Id: ACI2498
Native Mode: 1920 x 1080(p) (60.000Hz)
Output Type: DVI
Monitor Capabilities: HDR Not Supported
Display Pixel Format: DISPLAYCONFIG_PIXELFORMAT_32BPP
Advanced Color: Not Supported

[Danilo Nishimura]

I uninstalled, rebooted, and installed 1.10.2, and the issue is gone. I don't know exactly what fixed: could be the reboot, could be the uninstall.

[Danilo Nishimura]

So, it worked fine at first, but after using a few other softwares, it happened again. Rebooting the machine often temporarily fixes it.
I'm watching system stats and processes trying to pin down what causes the crash.

[Alexis Vaisse]

The crash may be caused by a shortage of VRAM.

Your log shows 16 GB of display memory: 8 GB of dedicated memory (i.e. DDR5 VRAM) and 8 GB of shared memory (i.e. a part of the main RAM that can be used by the GPU).
But some graphics-related data can only be allocated in dedicated memory and not in shared memory.

If you have a software that uses a lot of display memory, such as Unity or Unreal Engine, if this software uses, let's say, 60% of the display memory but this includes the entire dedicated memory, other applications that use the GPU such as Instant Terra may not be able to run.

Do you have a way to track the amount of used dedicated memory?

[Danilo Nishimura]

So, it's been happpening quite often. After a while using Unity and consuming quite a lot of ram, I close it and open Instant Terra, and it always will crash after resizing the window. It never happens if I restart the machine and open it right away.

I've double checked this time: both ram and vram are free for the app, and still it crashes on resize.