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OpenScad running in GPU ?

Posted by Replace

Replace

OpenScad running in GPU ?
April 28, 2017 09:05AM

Registered: 14 years ago
Posts: 862

Does it make sense to buy / build a new PC with multiple GPU video cards, to enhance rendering performance ?

In fact, the question is whether it will use that capacity ...

Thomas

www.3daybreaker.blogspot.com

Orca V4.4 rebuild to Ramps with Mk8 and E3D, as well as a Rostock Delta Mini and an OLO in backorder :-)

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dmould

Re: OpenScad running in GPU ?
May 03, 2017 08:21AM

Registered: 11 years ago
Posts: 2,472

I don't know for sure, but FWIW I am seeing very similar rendering times on two PCs that have the same (i7) CPU, but one of which has a cheap graphics card (+/-£30), and the other a mid-range card (+/- £250). Both running Win8. If anything the PC with the expensive graphics is a bit slower, though I have never timed them so it's very subjective.

Dave

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ohfurryone

Re: OpenScad running in GPU ?
May 04, 2017 09:23AM

Registered: 9 years ago
Posts: 40

Openscad uses the CPU to actually create and render the model, and the GPU to display the model on screen.

If you can find out if you're maxing out your card then maybe a newer one would help, but aside from that the FPS is limited by Openscads rendering system.

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o_lampe

Re: OpenScad running in GPU ?
May 13, 2017 03:20AM

Registered: 9 years ago
Posts: 5,232

I'd be more interested, if OpenScad would benefit from multicore CPU's?
I've seen a big leap forward with Slic3er Prusa edition taking advantage of multithreading, so why not OpenScad?

Edited 1 time(s). Last edit at 05/13/2017 03:21AM by o_lampe.

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David J

Re: OpenScad running in GPU ?
May 13, 2017 03:52AM

Registered: 10 years ago
Posts: 893

Quote
o_lampe
I'd be more interested, if OpenScad would benefit from multicore CPU's?
I've seen a big leap forward with Slic3er Prusa edition taking advantage of multithreading, so why not OpenScad?

I wish it could - my Linux box has an 8-core processor, but OpenSCAD only uses one when working. sad smiley

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brokencase

Re: OpenScad running in GPU ?
April 07, 2023 12:28PM

Registered: 1 year ago
Posts: 26

Best way to make rendering faster is to turn on fast-csg options in Preferences->Features
fast-csg does'nt always work for all models, but it works most of the time.