sculpting performance in viewport #41753

New Issue

Marios Makris · 2014-09-08T18:10:32+02:00

Marios Makris commented

2014-09-08 18:10:32 +02:00

Core I5
ATI Graphics card 6370m 1G
6GB RAM

Blender version: 2.71
Hash: 9337574

Sculpting performance in viewport MIGHT have been solved by unableing a feature.

When I started sculpting for the first time my viewport was lagging and I thought i needed more ram, but after a while (2 days) lag dissapeared.

My 90 thousand verts sculpt was going smooth.
Modifier used: Moltires

I started a new blender project and the lag is back, not only for my new project but for my old one's too.

So after reading on forums for hours to find the solution, I found nothing.

After switching on and off every thing in Blender, I found out that under the sculpting menu (where brushes and etc. are found)
on the options tab on "Threaded sculpt", when I switched it off the smoothness was back. Finally.:)

I tested most of the brushes on my sculpt for 5 to 10 minutes just to be sure on a 200 thousand + verts sculpt and it was very smooth.

After subdividing once more, my 800 thousand + vert sculp in viewport started lagging very slightly and after that on
3 million + verts the lag was visible, which that problem I guess comes from my Ram.

Sorry for posting this as a bug and not somewhere else. It's my first time on the blenders site.
I hope this will help and I am sorry if this bug was already solved and i wasted your time.

Core I5 ATI Graphics card 6370m 1G 6GB RAM Blender version: 2.71 Hash: 9337574 Sculpting performance in viewport MIGHT have been solved by unableing a feature. When I started sculpting for the first time my viewport was lagging and I thought i needed more ram, but after a while (2 days) lag dissapeared. My 90 thousand verts sculpt was going smooth. Modifier used: Moltires I started a new blender project and the lag is back, not only for my new project but for my old one's too. So after reading on forums for hours to find the solution, I found nothing. After switching on and off every thing in Blender, I found out that under the sculpting menu (where brushes and etc. are found) on the options tab on "Threaded sculpt", when I switched it off the smoothness was back. Finally.:) I tested most of the brushes on my sculpt for 5 to 10 minutes just to be sure on a 200 thousand + verts sculpt and it was very smooth. After subdividing once more, my 800 thousand + vert sculp in viewport started lagging very slightly and after that on 3 million + verts the lag was visible, which that problem I guess comes from my Ram. Sorry for posting this as a bug and not somewhere else. It's my first time on the blenders site. I hope this will help and I am sorry if this bug was already solved and i wasted your time.

Marios Makris commented

2014-09-08 18:10:32 +02:00

Changed status to: 'Open'

Marios Makris commented

2014-09-08 18:10:32 +02:00

Added subscriber: @Marmak8

Antonis Ryakiotakis was assigned by Bastien Montagne

2014-09-08 19:33:52 +02:00

Bastien Montagne commented

2014-09-08 19:33:52 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2014-09-08 19:33:52 +02:00

Assigning to Antony for final decision, but see no bug here.

Issues with multi-threading (actually, OpenMP library) are long-known ones under OSX, and since VS2013, under windows as well…

Note you may try a build from our buildbot, we are about to release 2.72 and things changed quite a bit, in particular regarding OMP and Windows, since official 2.71…

Assigning to Antony for final decision, but see no bug here. Issues with multi-threading (actually, OpenMP library) are long-known ones under OSX, and since VS2013, under windows as well… Note you may try a build from [our buildbot](https://builder.blender.org/download), we are about to release 2.72 and things changed quite a bit, in particular regarding OMP and Windows, since official 2.71…

Antonis Ryakiotakis commented

2014-09-08 20:34:51 +02:00

Changed status from 'Open' to: 'Archived'

Antonis Ryakiotakis closed this issue

2014-09-08 20:34:51 +02:00

Antonis Ryakiotakis commented

2014-09-08 20:34:51 +02:00

After so many reports related to openmp I think it's clear that the problem is OpenMP itself. We should just replace it with our own threading system but I don't think this is considered a bug anymore, rather a TODO.

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sculpting performance in viewport #41753