How To Bake Rigid Body Physics or Cloth Sim or Fluid Sim On Google Colab

[@5MinutesBlender]

𝐅𝐨𝐫 𝐚𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐮𝐬𝐞𝐫𝐬: If you use disk cache for any physics, the cache folder needs to be uploaded to colab along with the blend file, just like how we did it for Fluid Physics. Fluid physics uses a disk cache by default while any other type of physics saves the data in the blend file itself, but you can switch over to disk cache. All the notebook/ script file links are given in the video description. And to know how to render your scene faster using cycles on Google Colab, you can watch 👉 kzbin.info/www/bejne/rorUgJ1_pMRnqqM

[@trellery]

Thanks,and this Colab absolute free?

[@5MinutesBlender]

Yes, the CPU part used for this tutorial is absolutely free. For GPU (used in rendering) they have both free & paid layers. The free layer is good enough for limited uses. The CPU baking is anyway free.

[@trellery]

@@5MinutesBlender thk

[@cemilaydin7079]

Your scipts dont open for text editor, could you help pls

[@5MinutesBlender]

@@cemilaydin7079There are two types of files here, one is a script file (with py extension) which you need to simply upload to your Google Drive. It won't open in a text editor and you don't need to open it, you don't need to edit it, just upload it directly. If you want to anyway verify what it contains, you can change the file extension from py to txt, then you can open it in any text editor. Don't forget to change back the extension to py before you upload it to your Google Drive. The second file is a text file (with txt extension), you can easily open it in any text editor. You need to copy the contents of this file to your Colab Notebook page.

[@ErkamBal]

THANK YOU SO MUCH!!! THIS WAS WHAT I NEEDED YOU DESERVE 1 MILLION SUBSCRIBERS

[@5MinutesBlender]

Thank you so much 💝💝 I'm glad to know that it helped! 😊

[@rajinmuhammad673]

you deserve million subscribers

[@5MinutesBlender]

Thank you so much bro! 😊💝💝

[@rushigangane6269]

can i also bake particles system with this method? Google colab method?

[@5MinutesBlender]

Although I never tried it, but I believe it should be possible just like how we did for all other physics. You may need to change the baking script a bit as we did for the fluid baking - it is different from the rest of the physics types.

[@ameenhamdan753]

was very help full , and did you develop these py scripts and code ?

[@5MinutesBlender]

Thanks! Yes, these scripts are written by me 😊

[@Sangram-IND]

Thankyou ❤❤❤

[@5MinutesBlender]

You're welcome 😊💝💝

[@LastSliceOfPizzaEveryoneAvoids]

Now How to Render Animation with Those Baked Data On Google Colab without downloading them?...Please Help.Will Runing Ur Rendering Script Get the Cache Data In Drive?

[@5MinutesBlender]

You don't need to download it. Just keep it in the correct folder, the rendering script will pick it up. Let's say your blend file is kept in your drive/Colab-Render folder, and your baked data folder is named as Cache (check it in your blend file). You need to keep this baked data in your drive/Colab-Render/Cache folder. In other words, maintain the same relative path, and the script will run successfully.

[@TheMetalFreshTiger]

please explain how to merge in the liquid example the multiple bakes. How do i merge the first 100 frames, with the second 100 frames (from 101 to 200) in the blender project??? or do i have to first bake the first 100 frames, save the file, open it with blender, and set the bake from 0 to 200 this time, so that when i reupload it on Google the first 100 frames are already baked, and it will automatically skip them?

[@5MinutesBlender]

Yes, you have explained it correctly. Set the frames 1 to 100 and save it. Upload to drive (along with the bake folder) and bake it on colab. Download the file (along with the bake folder), open the file and change the frame from 1 to 200 and save it. Again upload it (along with the bake folder) and bake it on colab. It will recognize the 100 baked frames and skip them, and bake only 101 to 200 frames. Now when you download, you'll get the baked data with all 200 frames together.

[@Funblaaters]

Bro make a tutorial how to download flip fluids addon in colab and bake the simulation in it.

[@c4err9]

I wonder if it would be somehow possible to render animation on Google Colab :) Now that would be awesome if you could do rendering externally.

[@5MinutesBlender]

Yes, it's very much possible, and we made a tutorial on that as well, please check 👉 kzbin.info/www/bejne/rorUgJ1_pMRnqqM

[@kolban1]

I think I missed the reason why using Google Colab is an improvement over baking locally? Is there a listed specification for the Colab machine(s) that would somehow be faster than an average PC/laptop?

[@5MinutesBlender]

Depends on the spec of the laptop. It may be faster on colab but I guess that is not the primary reason. For some machines with limited RAM it may be impossible to bake a physics simulation - like you may not be able to bake fluid physics with domain resolution 250 etc. It will crash the machine. And whatever time it takes to bake, the machine is completely taken up by Blender, it does not respond to other software. Baking on colab can solve these issues. Colab may not be faster as such, like for my case it is the same speed on my machine and on colab. But I can't use a very high domain resolution on my machine.

[@SavoirPourTous]

Merci pour la vidéo, Question au niveau du cache du Rigid Body, où se trouve le fichier car parfois il ne prends pas en compte la valeur, donc je voudrais supprimer ce fichier et baké de nouveau, Merci d'avance pour votre retour,

[@5MinutesBlender]

Hi, Rigid Body physics does not use any external cache, it is always attached with the blend file directly. For Fluid physics, it is the opposite, it always keeps the baked data in a separate file. For all other physics types you have both the options, either keep it within the blend file or save it externally. Rigid Body physics is by design always with the blend file itself. If you need to reset this cache, you can go to the rigid body world in the scene tab and change the Field Weights like gravity or force field etc It will reset your rigid body cache. Then you can change back the values and re-bake your physics.

[@ashua925]

Sir i have a problem please help…i want to export my file as fbx which contains physics..i tried using the option bake to keyframes..and then after that when i am going to export is as fbx it is showing loading screen and after 15 to 20 mins its shows that blender is not responding..please help sirr

[@5MinutesBlender]

Which physics are you trying to bake to keyframes... rigid body physics right? In the bake to keyframes operator panel, try to limit the frame numbers to a small value say 1 to 10 and run it (basically change the end frame number to 10). Please let me know if that finishes successfully or not. It will give us a hint if the problem is with the size/complexity of the scene or if there is some other issue.

[@ashua925]

@@5MinutesBlender sir i have tried this…i given the end frame no 10..and then after when i am going to export is as fbx its still loading again..

[@ashua925]

@@5MinutesBlender sir please give me one tutorial please sirr

[@5MinutesBlender]

@@ashua925It's working at my end. Send your blend file to us at [e-mail] so that I can check why it is not working for you.

[@ashua925]

@@5MinutesBlender okay sirr..I request you to sir please send me the tutorials how you’re doing this…

[@Isoshi-47]

after like 45min of rendering i get a warning of not being able to use GPU anymore, have you gotten any similar stuff while rendering ?

[@5MinutesBlender]

Not encountered this myself, but the lock will reset within a day or two. You can then use it again. Always try to keep the usage limited. Space out the rendering into multiple batches over several sessions to remain in the good book of Google.

[@kdkarmavan]

Halo, i cant download via your link. Help me please

[@5MinutesBlender]

The script files are available for all. I have just checked the links as well. What errors are you getting while trying to download?

[@kdkarmavan]

@@5MinutesBlender It worked Bro, thank you very much

[@vagatronics]

i cant even bake one frame

[@5MinutesBlender]

What is the error? I just replied to one email on this, I hope that resolves the issue.

[@vagatronics]

@@5MinutesBlender No like myself in my Blender

[@ShivamBaranwal-tq8dr]

I've got this Error "Mounted at /content/drive tar: /content/drive/My Drive/Colab-Bake/blender-4.0.2-linux-x64.tar.xz: Cannot open: No such file or directory tar: Error is not recoverable: exiting now /bin/bash: line 1: ./blender-4.0.2-linux-x64/blender: No such file or directory" Please help

[@5MinutesBlender]

Please check if you are actually using Blender 4.0.2 version. I doubt your version number is different. You need to be consistent in the version number i.e. the actual version you have installed on your machine, the version you downloaded and then uploaded on your Google Drive - the tar.xz file, the version number mentioned throughout the script, keep them all the same.