GPU Subdivision: Slow operations with Shape Keys #101727

New Issue

Alexander · 2022-10-10T15:58:32+02:00

Alexander commented

2022-10-10 15:58:32 +02:00

System Information
Operating system: Ubuntu 20.04
Graphics card: Geforce MX230

Blender Version
Broken: 3.3, 3.2

Short description of error
With the GPU subdivision turned on, many operations with shape keys (locking, changing the active shape key) are quite slow, but the reason for the delay is the GPU subdivision itself, because when it is turned off, the speed of operation is several times higher

Exact steps for others to reproduce the error
select the body itself, and perform various operations with the shape keys (for example, changing the active one). Compare the speed with the GPU subdivision turned off and on
kira_lite.blend
2022-10-09 22-50-29.mp4

**System Information** Operating system: Ubuntu 20.04 Graphics card: Geforce MX230 **Blender Version** Broken: 3.3, 3.2 **Short description of error** With the GPU subdivision turned on, many operations with shape keys (locking, changing the active shape key) are quite slow, but the reason for the delay is the GPU subdivision itself, because when it is turned off, the speed of operation is several times higher **Exact steps for others to reproduce the error** select the body itself, and perform various operations with the shape keys (for example, changing the active one). Compare the speed with the GPU subdivision turned off and on [kira_lite.blend](https://archive.blender.org/developer/F13649432/kira_lite.blend) [2022-10-09 22-50-29.mp4](https://archive.blender.org/developer/F13649422/2022-10-09_22-50-29.mp4)

Alexander commented

2022-10-10 15:58:32 +02:00

Added subscriber: @sanek2005

Alexander changed title from ~~Slow operations with Shape Keys, if GPU Subdivion is Enabled~~ to Slow operations with Shape Keys, if GPU Subdivision is Enabled

2022-10-10 16:02:16 +02:00

Omar Emara commented

2022-10-10 16:05:17 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-10-10 16:05:17 +02:00

Seems to be the same as #96583, which should have been fixed.

Omar Emara commented

2022-10-10 16:07:54 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Omar Emara commented

2022-10-10 16:07:54 +02:00

Added subscriber: @upliner

Omar Emara commented

2022-10-10 16:07:54 +02:00

Which versions of the Nvidia drivers do you have installed?

@upliner Do you happened to know how #96583 got resolved? Can you try the file in this report as well?

Which versions of the Nvidia drivers do you have installed? @upliner Do you happened to know how #96583 got resolved? Can you try the file in this report as well?

Alexander commented

2022-10-10 16:44:50 +02:00

If you believe what System Info gave, then "4.5.0 NVIDIA 470.129.06"

Omar Emara commented

2022-10-10 17:00:09 +02:00

It seems there are more recent drivers, can you try those? Maybe the issue is fixed there.

Mikhail Vigovskiy commented

2022-10-11 13:34:56 +02:00

In #101727#1430224, @OmarEmaraDev wrote:
Which versions of the Nvidia drivers do you have installed?

@upliner Do you happened to know how #96583 got resolved? Can you try the file in this report as well?

My file subdiv.blend from #96583 works good for me in Blender 3.3.1 , but kira_lite.blend works slowly. I don't know the reason. I tried deleting all modifiers except subdiv for Kira, but it's still slow.

> In #101727#1430224, @OmarEmaraDev wrote: > Which versions of the Nvidia drivers do you have installed? > > @upliner Do you happened to know how #96583 got resolved? Can you try the file in this report as well? My file subdiv.blend from #96583 works good for me in Blender 3.3.1 , but kira_lite.blend works slowly. I don't know the reason. I tried deleting all modifiers except subdiv for Kira, but it's still slow.

Mikhail Vigovskiy commented

2022-10-11 13:48:31 +02:00

I've tried it on two machines. Desktop with GTX 670 and laptop with RTX 3050. The laptop has 2 GPUs so I've runned Blender with prime-run to force always using NVidia GPU. Here's system-info for my laptop.
system-info.txt

I've tried it on two machines. Desktop with GTX 670 and laptop with RTX 3050. The laptop has 2 GPUs so I've runned Blender with prime-run to force always using NVidia GPU. Here's system-info for my laptop. [system-info.txt](https://archive.blender.org/developer/F13657565/system-info.txt)

Omar Emara commented

2022-10-11 14:01:21 +02:00

Okay, thanks for the help @upliner!

Pratik Borhade commented

2022-10-12 07:13:23 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-10-12 07:13:23 +02:00

I can confirm with both dedicated and integrated GPU

Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.14802 Core Profile Context 21.40.26 30.0.14026.1
---
**System Information**
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3050 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.78```

I can confirm with both dedicated and integrated GPU - - - ```**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.14802 Core Profile Context 21.40.26 30.0.14026.1 --- **System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3050 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.78```

Pratik Borhade commented

2022-10-12 07:13:35 +02:00

Changed status from 'Needs User Info' to: 'Confirmed'

Pratik Borhade changed title from ~~Slow operations with Shape Keys, if GPU Subdivision is Enabled~~ to GPU Subdivision: Slow operations with Shape Keys

2022-10-12 07:14:06 +02:00

Philipp Oeser removed the

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

GPU Subdivision: Slow operations with Shape Keys #101727