E-Cycles - Render interiors under a minute with cuda


(mathieu) #1

Render faster and spare a lot of money. E-Cycles is a fork of Cycles which renders about twice as fast when using CUDA. I offer full weekly builds based on Blender 2.7x and 2.8x just like the buildbots, with support.
You can buy it now on Gumroad based on Blender 2.8x or 2.7x.

With E-Cycles, you can:

  • render 1.7x up to 2.4x faster with CUDA, using the same settings or render much more realistic images in the same time as the normal release (see table in the images above for more details)
  • get fast support and bug fixing
  • render cleaner images at the same sample count or have the same noise as official Blender
  • spare time by using auto tile size
  • buy a much cheaper and more quiet GPU yet having the same performance as the big one
  • help make Blender better. The improvements will be submitted to the Blender Foundation after a year
  • Be sure your money will be used to make Cycles better and benefit from the improvements now

*times from the 2080Ti are from https://www.hardwareluxx.de/index.php/artikel/hardware/grafikkarten/48006-zotac-gaming-geforce-rtx-2080-ti-amp-extreme-im-test.html?start=9

Get 10% off until end of january. If you provide a proof that you are student, PM me, you can get it for 29€/year or 3€/month.

Professionals can get the 2.7x build:

  • it has an option to get the exact same output as master, with still 1.7x faster rendering compared to master.
  • it is build on the stable 2.79.x version
  • the 2.8x builds are also available as a bonus to slowly switch to it
  • If you buy it this week, you can even get one build based on a branch of your choice (like 2.79b or Fracture modifier)

You can also learn how I did it with a course to create your own Blender version.

This render from an Evermotion scene took 2m:55s on a 1080Ti using E-Cycles:

Original scene from https://evermotion.org/shop/show_product/archinteriors-vol-43-for-blender/14563

Here are 2 videos to show it works in animations too:

You can download the original quality versions here https://uploadfiles.io/yvvir and here https://ufile.io/q5y8a

Work faster - Create your own Blender, with new modifiers and faster rendering
Poll: tutorial to build custom Blender or ready to use builds?
Excessive noise in well-lit scene?
Is Radeon pro duo 32GB worth it for cycles?
Better cooperation between devs and artists: Software instead of Hardware?
Work faster - Create your own Blender, with new modifiers and faster rendering
Work faster - Create your own Blender, with new modifiers and faster rendering
New computer - best hardware for 2019?
Survey E-Cycles
Survey E-Cycles
Lux, Corona, Cycles
Lux, Corona, Cycles
How to fund specific features/enhancements in a viable way?
(mathieu) #2

What the artists say:

Flavio Della Tommasa “Obviously in terms of performance I believe the data speak for themselves. On 8 images, 2h each, I lost a day of calculation. With E-Cycles, in just over 2 hours I solved everything.” Original post here

Vitor Balbio, creator of Toonkit and BakeTool:
“I tested the Intel denoise node and It’s gorgeous for fast previews (and probably final renders too) in internal images. By itself already worth the investment!” Original post here

“Impressive speed-ups”, “support is good, all issues (specific to E-Cycles build) I have found and reported were quickly fixed” Original post here

“The Speedup is amazing” Original post here

“91s to 45s with a RTX 2070” Original post here

“3m:09s to 1m:42s, needless to say, I’m impressed!” Original post here

“Impressive! 32’53” instead of 1h02’42" Windows 7 pro, i7 GTX 680M laptop, Blender 2.80." Original post here

(mathieu) #3


Is it compatible with Blender?
Yes, Blender is actually untouched, only Cycles was modified. So it’s 100% compatible with the official version.

Is it worth for me?
If you render at least with a 70€ Cuda card supported by Blender on Windows or Linux, you get this build amortized immediately in most cases and on the long run anyway due to the electricity you spare compared to rendering longer or rendering with more cards.
Branched path tracing and OpenCL are still beeing optimized.

Can I take only one or two month?
Yes, you stay as long as you want, you are free, and you continue to get updates for the month you have paid. The reduced price can apply to the following months if you keep your membership without interruption.

Do the build work after my Membership finished?

Is it open source?
Yes, of course. I even offer a course, with which you can learn how I made the optimizations, how to add new modifiers, customize the UI to streamline your workflow, etc.

So much faster, really?
Check other customers render times here in the thread :slight_smile: 2070Ti is 2x faster with the BMW Scene, the 980 is about 60% to 80% faster depending on the scene.

What can I expect in my case?
On Cuda cards, a lot. On a 1080Ti, you can expect to render 1.65x to 2.42x faster rendering with path tracing (in the time you renderd 1 picture before, you can then render 1.65 to 2.42 of them).
Here is a table of the times on the 1080Ti and Vega64 to see which kind of scene get which speedup.

What if it doesn’t work so well on my configuration ?
You have 30 days money back guarantee. If you are not satisfied, you get a full refund.

What about the cool features added regularly in Blender’s builds?
During 1 year, you get free updates every week to always get the latest improvements made in master and there will be 1 feature or optimization added every month. Each feature, after a year, will be uploaded for review on the official tracker, so you also contribute to Blender’s development.

How do I report bugs?
Blender at the time of writing has 1300+ bugs opened. Check first that the problem you experience is not in the latest buildbots and that it’s a bug in happening during rendering itself. If it only happens in this build, you can post it here with a blend file to reproduce and your configuration. If the file must be kept private, post it in pm.

Which GPU are supported?
The same as in official Blender. AMD drivers however are buggy in their latest version (18.12.2), supported and tested version is 18.5.1. The speed gains are also not as good as with CUDA yet (sometime also 2x faster, but most of the time only 20% faster). All Nvidia drivers tested worked.

Is CPU rendering also faster?
OSL rendering is faster, I’m working on normal CPU rendering, maybe it will be added later as a monthly feature.

(Piotr Adamowicz) #4

My, that’s a big speedup if true. So what’s the catch?

(polygonsoul) #5

I am expecting nothing less than a secondary bounce solver like Corona UHD cache, RT for the image should exactly be 24:12 (plus some seconds for denoising) because it is Christmas-Time. Joke aside every speedup for Cycles is welcome, will watch this closely!

(mathieu) #6

It’s for real, no catch, you have 30 days money back guarantee from Gumroad, so you would get 100% back anyway.

(Dodododorian96) #7

i don’t understand…

if its easy as following this tutorial to speed up cycles by 40%, why dont you want this speed-up to be Master and aviable to everyone ? why dont you share your method to blender devs?

is it because its exclusive to a custom build? if so, why and how ??

(mathieu) #8
  1. So your point is that I’m a bad person because I don’t work for free all the time. 3 years of free patches and builds are not enough, I should do it my whole life? You know the Official devs are paid ? Some people here write addons for free, some sell, some do both, but it’s right because it’s python and I’m wrong because it’s C/C++?
    What the reasoning behind that, please explain?

  2. And regarding the posting/giving to the devs: This patch for example: https://developer.blender.org/D2254, lot’s of discussion, happy users who saw real benefits with it https://developer.blender.org/D2254#53699, I rewrote it in 3 parts, still nothing in master. Days lost at speaking. And it’s not only me. You only see the devs staying, but on the tracker, you can find many devs who posted patches, got ignored or rejected for politics and never came back. Speak with the fracture modifier in PM, you will see what they thing about posting patches for inclusion. And at that time, Blender had sometime less than 100 open bugs… Why would that be any better in your opinion now that 2.8 must be made stable with more than 1300 bugs opened, please also explain?

  3. In the course, you get the code, so you can do the updates yourself (everything included in this build is in the course) and you can even do the review process for the parts you want to have in master. With this option, I do all the work for my clients during a full year, so that you just have to click to download like for the buildbots. It’s just some people like to do things themself, they can take part to the course other prefer ready to use products with support, they can take this option.

(mathieu) #10

If it continues like that, you will get 1 year for free with your joke :smiley:

(Dodododorian96) #11

Hey calm down, im not criticizing anyone.

If it really boost up cycle by 40% don’t worry I will buy and follow your course :wink: Price is not the question. And the pain to maintain a custom build is quite low compared to a 40% speed up…

think by learning everyone how to code in c you are doing a fantastic job.

I was just asking how it’s possible to achieve this, that’s all, the only reason I could find is that the code is hardware specific to each user but ,visibly it’s not. That was resolving a lot of questions like why you’re selling a full course about coding aside with this speed up and the incompatibility for it to become master.

And we’ll I didn’t know that blender devs are so hard with C++ additions to master… its quite sad


As I do not plan to buy it, I support your reasoning completely.

Keep up good work!

(mathieu) #13

“And we’ll I didn’t know that blender devs are so hard with C++ additions to master… its quite sad”
Sometime it’s positive. Quality code is also important in a codebase many person work with, but sometime it’s based on opinion with few technical arguments, sometime it’s just they have way too much to do and simply have to do choices, but whatever the reason is, in the end it hurts and takes time which can be invested more wisely.


@bliblubli my guess is 100 sec.

(Komposthaufen) #15

@bliblubli I would guess 4 min.

(mathieu) #16

@polygonsoul don’t forget to give your name and email address if you want to participate.
If nobody else answers, you 3 get one year of update as there is no other contender.

(Eric Klein) #17

@bliblubli my guess 5 min.

(Lissanro Rayen) #18

@bliblubli My guess is 3 minutes.

(Lumpengnom) #19

My guess is 5 minutes 30 seconds.

(ouraf) #20

My guess is 60 seconds

(shomyshomy) #21

@bliblubli My guess is 45 seconds