algorithmic modeling for Rhino



Octopus is a plug-in for applying evolutionary principles to parametric design and problem solving. It allows the search for many goals at once, producing a range of optimized trade-off solutions between the extremes of each goal.

Also see octopus.E for custom evolutionary algorithms.


Download the latest version on food4rhino

It is part of a range of tools developed by adrVienna at the University of Applied Arts Vienna, and Bollinger+Grohmann Engineers.


  • search for single goal + diversity of solutions
  • search for best trade offs between 2 to X goals
  • improve solutions by similarity-goals
  • choose preferred solutions during a search
  • change objectives during a search
  • solutions' 3d models for visual feedback
  • recorded history
  • save all search data within the Grasshopper document
  • save a solution as a Grasshopper State
  • export to text or text files

Octopus introduces multiple fitness values to the optimization. The best trade-offs between those objectives are searched, producing a set of possible optimum solutions that ideally reach from one extreme trade-off to the other.

Based on SPEA-2 and HypE from ETH Zürich and David Rutten's Galapagos User Interface. Developed by Robert Vierlinger in cooperation with Christoph Zimmel, and Bollinger+Grohmann Engineers.


To install:

  • Copy the .gha and .dll file into the Grasshopper components folder 
  • Right-click the file > Properties > make sure there is no "blocked" text
  • Restart Rhino and Grasshopper


Some examples are provided here

New commented examples and a brief manual are provided in the download of octopus on food4rhino.

Location: Vienna
Members: 134
Latest Activity: yesterday

Discussion Forum

any way to run last version of Octopus with grasshopper 0.9.0069 ?

Hi, any way to run last version of Octopus with grasshopper  0.9.0069 ?thxContinue

Started by raf2205 on Friday.

how to divid a shape 4 Replies

I want to divid a circle surface into 6 pieces which areas are the same,but the result is not what i want,the attachment is my defintion, , so what is wrong with it.Thank you very muchContinue

Started by dcjxb. Last reply by dcjxb Jul 1.

Confused Octopus Newbie 4 Replies

Hello,I am trying Octopus for the first time; all of the tutorials and previous posts seem to have older components that make it so that the Octopus component does not load, proving to be unhelpful…Continue

Started by yeliz karadayi. Last reply by Robert Vier Jun 16.

Run Octopus 0.2 4 Replies

Does anyone know how can I start running Octopus 0.2?I know in version 0.1 we should double click on the component, in 0.2 double clicking does open any window.Any help will be appreciated.BestContinue

Tags: objective, Multi, Run, Octopus

Started by M NICK. Last reply by Davide Gatti Apr 17.

Comment Wall

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Comment by Brian Ringley on July 7, 2014 at 7:20

Haha no prob. You should keep the Awesome tab for the next release. Thanks for all your work in this area.

Comment by Robert Vier on July 4, 2014 at 4:08

Oh this is a mistake in compiling the plug-in, this component was purely for development, and not supposed to be in the official release.

Sorry for the confusion,



Comment by Brian Ringley on July 3, 2014 at 17:27

Ha I'm getting an "Awesome" tab when I load the Octopus.e gha. What is this thing?!

Comment by William on December 21, 2013 at 5:01

Is there any version of Octopus that works with Grasshopper 0.9.0064? I can load the component, but it crashes whenever I delete it from the canvas.

Comment by Jesus Galvez on November 19, 2013 at 12:29

OK, it seems to be working. Only thing is on each start I only get one generation, instead of many. I guess I have to mess around with the options. 

Also the text is very difficult to read. I didn't realize until now that there were numbers on the fields. 

Comment by Jesus Galvez on November 19, 2013 at 12:20

Hello Abraham, 

the files are unblocked. I can use the Octopus component and upon opening the example files I can see the results of the default calculation. But when I click Start again the log file 01_singleObjective_Diversification_OctopusErrorLog_20131119.txt  says:

Error, reduction of environmental selection did not yield the correct archive size

I have previously used Octopus 0.1 flawlessly.

Comment by Abraham Yezioro on November 19, 2013 at 11:43

You need to unblock the .dll file.


Comment by Jesus Galvez on November 19, 2013 at 9:02


I downloaded version 3.1 and I can't get it to work. I have put files HelixToolkit.Wpf.dll and Octopus.gha in C:\Users\"username"\AppData\Roaming\McNeel\Rhinoceros\5.0\Plug-ins\Grasshopper {B45A29B1-4343-4035-989E-044E8580D9CF}\\Components\

Octopus appears in the ribbon, and the example files load correctly, but when I click start (calculation), it does nothing. 


Comment by Rob on October 27, 2013 at 12:02

Ok, solved that issue. The .gha and .dll were in: 

C:\Program Files (x86)\Grasshopper for Rhino 5\Components

but they need to be in:

C:\Users\Rob\AppData\Roaming\McNeel\Rhinoceros\5.0\Plug-ins\Grasshopper {A4.....CF}\\Components

Octopus is running perfectly now. What a cool plugin. Thanks!

Comment by Rob on October 27, 2013 at 11:00

I'm having trouble getting Octopus 3.0 or 3.1 to run in GH 0.9.0061. I believe I have it set up correctly, but double-clicking on the component seems to have no effect whatsoever. The file isn't blocked... Any thoughts anyone? Does Octopus run in 0.9.0061?



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