Repeat zone causes PC to hard freeze #114942

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Ed-Edison · 2023-11-15T23:32:44+01:00

Ed-Edison commented

2023-11-15 23:32:44 +01:00

System Information
Operating system: Windows 10 Pro 64 bit
Graphics card: Nvidia RTX 3070 6GB
RAM: 32GB

Blender Version
Broken: 4.0
Worked: N/A

When using repeat zone on geometry with transform node + join geometry node, the PC will completely freeze after a certain number of iterations, requiring a force reboot.

To recreate. Add geometry nodes to a default cube. Add repeat zone, within that zone place a transform node and join geometry node. Link the nodes and put a number such as 30 in the repeat iterations slot. (Included file is at the default value 1)

**System Information** Operating system: Windows 10 Pro 64 bit Graphics card: Nvidia RTX 3070 6GB RAM: 32GB **Blender Version** Broken: 4.0 Worked: N/A When using repeat zone on geometry with transform node + join geometry node, the PC will completely freeze after a certain number of iterations, requiring a force reboot. To recreate. Add geometry nodes to a default cube. Add repeat zone, within that zone place a transform node and join geometry node. Link the nodes and put a number such as 30 in the repeat iterations slot. (Included file is at the default value 1)

RecursionCrash.blend

1.2 MiB

Ed-Edison added the

labels 2023-11-15 23:32:45 +01:00

Jesse Yurkovich commented

2023-11-16 00:58:07 +01:00

I'm not sure what you expect to happen. This is a recursive setup where, each time through the zone, the entire previous geometry set is entirely duplicated. The geometry count doubles each iteration and by the time you reach 20 iterations there are >8 million verts. Requesting 30 iterations means trying to generate and store 8 billion vertices. In general, Blender provides no out of the box mechanism to guard against requesting outlandish amounts of geometry. Nor are there any concrete plans to do so in the near future.

Ed-Edison commented

2023-11-16 01:37:17 +01:00

I'm not sure what you expect to happen. This is a recursive setup where, each time through the zone, the entire previous geometry set is entirely duplicated. The geometry count doubles each iteration and by the time you reach 20 iterations there are >8 million verts. Requesting 30 iterations means trying to generate and store 8 billion vertices. In general, Blender provides no out of the box mechanism to guard against requesting outlandish amounts of geometry. Nor are there any concrete plans to do so in the near future.

Ah, I misunderstood how it works then. I thought it was additive not multiplicative.

> I'm not sure what you expect to happen. This is a recursive setup where, each time through the zone, the entire previous geometry set is entirely duplicated. The geometry count doubles each iteration and by the time you reach 20 iterations there are >8 million verts. Requesting 30 iterations means trying to generate and store 8 billion vertices. In general, Blender provides no out of the box mechanism to guard against requesting outlandish amounts of geometry. Nor are there any concrete plans to do so in the near future. Ah, I misunderstood how it works then. I thought it was additive not multiplicative.

Pratik Borhade commented

2023-11-23 07:32:58 +01:00

It seems you're running out of memory due to heavy geometry. As Jesse said, this is not a bug, closing.

Pratik Borhade closed this issue

2023-11-23 07:33:01 +01:00

Blender Bot added

and removed

labels 2023-11-23 07:33:03 +01:00