Multiple editors open crash on debugging scene

[dhbahr]

Godot version

Godot Engine v4.0.beta1.official (20d6672846b3fd1537603ac080116dcc914c10e3)

System information

Arch Linux - Vulkan API 1.2.0 - Using Vulkan Device # 1: NVIDIA - NVIDIA GeForce MX450

Issue description

I'm working on a Authoritative Multiplayer server implementation, to that end I currently have 4 projects:

• Game server
• Authentication server
• Gateway
• Game client

When running the Authentication Server and Gateway, and trying to run the Game client, debugging crashes with the following report:

ERROR: Can't create buffer of size: 24, error -2.
   at: _buffer_allocate (drivers/vulkan/rendering_device_vulkan.cpp:1348)

================================================================
handle_crash: Program crashed with signal 11
Engine version: Godot Engine v4.0.beta1.official (20d6672846b3fd1537603ac080116dcc914c10e3)
Dumping the backtrace. Please include this when reporting the bug on: https://github.com/godotengine/godot/issues
[1] /usr/lib/libc.so.6(+0x38a00) [0x7efce8b9ea00] (??:0)
[2] /usr/lib/libnvidia-glcore.so.515.76(+0x12528f2) [0x7efcd18528f2] (??:0)
[3] /usr/bin/godot4() [0x18a698f] (??:0)
[4] /usr/bin/godot4() [0x18a731d] (??:0)
[5] /usr/bin/godot4() [0x416240d] (??:0)
[6] /usr/bin/godot4() [0x3b814a4] (??:0)
[7] /usr/bin/godot4() [0xaab6bc] (??:0)
[8] /usr/bin/godot4() [0x3aa83d0] (??:0)
[9] /usr/bin/godot4() [0xabd250] (??:0)
[10] /usr/bin/godot4() [0xac3e08] (??:0)
[11] /usr/bin/godot4() [0xa7d53c] (??:0)
[12] /usr/lib/libc.so.6(+0x23290) [0x7efce8b89290] (??:0)
[13] /usr/lib/libc.so.6(__libc_start_main+0x8a) [0x7efce8b8934a] (??:0)
[14] /usr/bin/godot4() [0xa88121] (??:0)
-- END OF BACKTRACE --
================================================================

Note 1: if I run the authentication and gateway directly from the directory without launching the editor, the client editor can actually debug.

Note 2: I can confirm this happens with whichever combination of open editors, not exclusively the ones mentioned before.

Steps to reproduce

• Open a first project in the editor and run it
• Open a second project in the editor and run it
• Open a third project in the editor and run it

Minimal reproduction project

No response

[Calinou]

You may be running out of VRAM since 3 editor instances are opened at the same time on a low-end GPU, and Godot isn't managing to fall back to system memory somehow. Use watch -n1 nvidia-smi in a terminal to monitor VRAM usage as you're opening more editor instances.

[dhbahr]

Not being very knowledgeable on this stuff I'd say you are likely on spot. The third editor already uses half the memory as the first two, running the scene doesn't show up at all (see screenshot).