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 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: 153
Latest Activity: Jan 17

Discussion Forum

Is there a way to control the octopus do not generate new decision variables until it received the evaluation feedbacks?

Hi,I carried out an optimization based on energy simulation data using Octopus. As the simulation process is time consuming, sometimes the evaluation index has not been calculated and the output of…Continue

Started by Han Yunsong Dec 27, 2014.

Fittest Added

Hi All,I am newbie in octopus and still confuse to decide the cadidates based on the fittest. I have a question, what is "fittest added" in navigation statistics and how to set it? I always having it…Continue

Started by rendy perdana khidmat Dec 21, 2014.

Don't know where to start ! a newbie question 4 Replies

Hi everyone,I'm new to Octopus. I'm going to use Octopus with Diva ( daylighting analysis component). I have to outputs from two diva components that I need to feed them to Octopus as objective…Continue

Started by CD2005. Last reply by CD2005 Nov 28, 2014.

Find an area equal portions?

Find an area equal portions?I have seen people ask this question, but I have a problem during the test?I would like to find the area decile. Now is the five values, if more value it? GH multiple…Continue

Started by 未知 Nov 7, 2014.

Comment Wall

Add a Comment

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Comment by fred labbe on December 8, 2014 at 8:47

Thanks Robert!

Comment by Robert Vier on December 8, 2014 at 8:41

works with the latest version, too!

Comment by fred labbe on December 8, 2014 at 7:18

Does the latest version of Octopus work with Grasshopper 0.9.0076.... download page says it is compatible with 0.9.0075.

If only works with 0.9.0075 any tips on where to find thta version of Grasshopper? 


Comment by Dan Hou on September 25, 2014 at 1:55

What is the algorithm to calculate hypervolume metric? Is it HSO?

Comment by Andreas Wilde on July 30, 2014 at 3:12

Can Octopus pick the best solution itself? Where?

How does Octopus deal with multicriteria weighting and multicriteria scores?

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. 


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