Slow shape key updates with GPU Subdivision #96583

New Issue

Mikhail Vigovskiy · 2022-03-18T06:07:23+01:00

Mikhail Vigovskiy commented

2022-03-18 06:07:23 +01:00

System Information
Operating system: Ubuntu 21.10
Graphics card: NVIDIA GeForce GTX 670

Blender Version
Broken: 3.1.0
Worked: 3.0.1

Short description of error
GPU subdivision works fast for pose updates, but it runs slower than CPU subdivision when changing shape key values

Exact steps for others to reproduce the error
In attached blend file try to change value of "charmorph_final" shape key. When GPU subdivision if off it works ok, but when it is on, it runs very slowly
subdiv.blend

**System Information** Operating system: Ubuntu 21.10 Graphics card: NVIDIA GeForce GTX 670 **Blender Version** Broken: 3.1.0 Worked: 3.0.1 **Short description of error** GPU subdivision works fast for pose updates, but it runs slower than CPU subdivision when changing shape key values **Exact steps for others to reproduce the error** In attached blend file try to change value of "charmorph_final" shape key. When GPU subdivision if off it works ok, but when it is on, it runs very slowly [subdiv.blend](https://archive.blender.org/developer/F12932756/subdiv.blend)

Mikhail Vigovskiy commented

2022-03-18 06:07:23 +01:00

Added subscriber: @upliner

Pratik Borhade commented

2022-03-18 06:32:34 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-03-18 06:44:55 +01:00

Thanks for the report. Compared both GPU subdiv on and off, I don't see any difference in shape key update.
Tested on 3.1 release

Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7323```

Thanks for the report. Compared both GPU subdiv on and off, I don't see any difference in shape key update. Tested on 3.1 release ```System Information Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7323```

Mikhail Vigovskiy commented

2022-03-18 09:15:26 +01:00

In #96583#1325182, @PratikPB2123 wrote:
Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7323```

Does Integrated Intel graphics support hardware subdivision? Is there any difference in any other cases (armature deform, edit mode)? For me, shape key update is slower with GPU subdivision, but in all other cases GPU performs faster.

> In #96583#1325182, @PratikPB2123 wrote: > Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7323``` Does Integrated Intel graphics support hardware subdivision? Is there any difference in any other cases (armature deform, edit mode)? For me, shape key update is slower with GPU subdivision, but in all other cases GPU performs faster.

Germano Cavalcante commented

2022-03-18 14:08:18 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-03-18 14:08:18 +01:00

It might be the same problem described in #96434 (GPU subdivision: Bad performance with viewport statistics) since shape keys is a kind of internal modifier.

Kévin Dietrich commented

2022-03-21 07:42:16 +01:00

Added subscriber: @kevindietrich

Kévin Dietrich commented

2022-03-21 07:42:16 +01:00

I cannot reproduce the performance problem. Looking into a profile build, only the GPU code is executed, so it is not the same as #96434 (GPU subdivision: Bad performance with viewport statistics). I may try on a different card, it might be because memory access on the GPU is not coherent enough.

Philipp Oeser commented

2022-03-23 14:08:50 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-03-23 14:08:50 +01:00

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

Philipp Oeser commented

2022-03-23 14:08:50 +01:00

Also cannot reproduce here (in fact, for me GPU subdiv is quite a bit faster

**System Information**
Operating system: Linux-5.13.0-0.rc6.45.fc35.x86_64-x86_64-with-glibc2.34.9000 64 Bits
Graphics card: NVIDIA GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.44
version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: `rBc77597cd0e15`

Not sure if this could also be influenced by the driver version? Are these up-to-date?
@upliner : Please share your System Info (Help > Save System Info)

Also cannot reproduce here (in fact, for me GPU subdiv is quite a bit faster ``` **System Information** Operating system: Linux-5.13.0-0.rc6.45.fc35.x86_64-x86_64-with-glibc2.34.9000 64 Bits Graphics card: NVIDIA GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.44 version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: `rBc77597cd0e15` ``` Not sure if this could also be influenced by the driver version? Are these up-to-date? @upliner : Please share your System Info (`Help` > `Save System Info`)

Mikhail Vigovskiy commented

2022-03-29 19:11:42 +02:00

Not sure if this could also be influenced by the driver version? Are these up-to-date?
@upliner : Please share your System Info (Help > Save System Info)

I currently use 470 drivers. OK, I can try to update them and see if it helps.
Attaching system info. system-info.txt

> Not sure if this could also be influenced by the driver version? Are these up-to-date? > @upliner : Please share your System Info (`Help` > `Save System Info`) I currently use 470 drivers. OK, I can try to update them and see if it helps. Attaching system info. [system-info.txt](https://archive.blender.org/developer/F12954696/system-info.txt)

Mikhail Vigovskiy commented

2022-03-29 19:40:16 +02:00

UPD: NVIDIA drivers newer than 470 don't work on my current system. Maybe they will work after updating Ubuntu to 22.04.

Philipp Oeser commented

2022-04-26 08:51:05 +02:00

In #96583#1331747, @upliner wrote:
UPD: NVIDIA drivers newer than 470 don't work on my current system. Maybe they will work after updating Ubuntu to 22.04.

was there any success upgrading?

> In #96583#1331747, @upliner wrote: > UPD: NVIDIA drivers newer than 470 don't work on my current system. Maybe they will work after updating Ubuntu to 22.04. was there any success upgrading?

Mikhail Vigovskiy commented

2022-04-26 19:47:49 +02:00

No, Ubuntu version appeared to have nothing to do with this. It's just because of my old GPU. NVidia only provides for it 470 driver as production branch and 465 as new-feature branch. Should I try 465?

Mikhail Vigovskiy commented

2022-04-26 20:16:47 +02:00

In #96583#1346612, @lichtwerk wrote:
was there any success upgrading?

I've tried it on another machine that has RTX 3050 GPU and uses 510 NVidia drivers. The problem happens there too. Here is new system-info file
system-info.txt

> In #96583#1346612, @lichtwerk wrote: > was there any success upgrading? I've tried it on another machine that has RTX 3050 GPU and uses 510 NVidia drivers. The problem happens there too. Here is new system-info file [system-info.txt](https://archive.blender.org/developer/F13030369/system-info.txt)

Pratik Borhade commented

2022-05-11 09:20:17 +02:00

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

Pratik Borhade commented

2022-08-16 07:11:00 +02:00

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

Pratik Borhade commented

2022-08-16 07:11:00 +02:00

@upliner hi, any improvements on you side in latest 3.3 builds?: https://builder.blender.org/download/daily

I've tried it on another machine that has RTX 3050 GPU and uses 510 NVidia drivers

System-info file shows different GPU: AMD RENOIR (DRM 3.44.0, 5.17.1-3-MANJARO, LLVM 13.0.1)

Still not able to confirm the performance drop

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```

@upliner hi, any improvements on you side in latest 3.3 builds?: https://builder.blender.org/download/daily > I've tried it on another machine that has RTX 3050 GPU and uses 510 NVidia drivers System-info file shows different GPU: `AMD RENOIR (DRM 3.44.0, 5.17.1-3-MANJARO, LLVM 13.0.1)` - - - Still not able to confirm the performance drop ```**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```

Mikhail Vigovskiy commented

2022-08-16 09:11:56 +02:00

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

Mikhail Vigovskiy closed this issue

2022-08-16 09:11:56 +02:00

Mikhail Vigovskiy self-assigned this 2022-08-16 09:11:56 +02:00

Mikhail Vigovskiy commented

2022-08-16 09:11:56 +02:00

The problem seems to be fixed in Blender 3.2.2 so I think it can be closed.

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Slow shape key updates with GPU Subdivision #96583