ฝัง
- เผยแพร่เมื่อ 10 ม.ค. 2023
- Using version 1.5 of the FLIP fluid add-on I've been trying out the differences in the resolution verus time baking.
System:
Intel Core i7-8700 CPU
32GB Ram
7200rpm HDD
RTX2080
Blender 3.4
Flip Fluids 1.5 Add-on - บันเทิง
I created my first fluid simulation at only 128 resolution, and felt like I'd put my patience to the ultimate test. Can never go higher
They can take a while. It stretches my patients most the time. :)
that's awesome. I do everything at 32, and then render when I'm asleep. lol..
@@MercuryRisingFast At higher resolutions, you may often spend more time baking than rendering.
@@nickyreigns254 what resolution you used?
I'll admit this is better than I could do. But fluid simulations are old news (joke). Caustics are where it's at if you want to make more realistic CG, I think. Fluid simulations are downright beautiful and I can certainly appreciate their scientific applications in working out the nuances of fluid dynamics. Particularly in research regarding the navier-stokes equation, I would imagine. If they could solve that equation, fluid simulations would probably be trivial to work out.
It's interesting how they look "off" but they're so close I can't describe what's wrong. Super cool!
I know what you mean. I think the scale of the scene had made it look more viscous than it really is. As I've done a really rubbish job of the other elements it just looks too slow.
5 day baking! u mad bro! Great! Continue pls)
Will do dude.. :)
1024 looks absolutely gorgeous
Thank you. :)
meetriiicccccc
5 days, but it looks extremely nice! What about liquid sims who use higher viscosity and surface tension (Like honey or maple syrup)?
Was thinking of experimenting with those. They just take even longer to bake. :(
5 days baking. really you are patient
I try to be, but I get impatient very quickly. :)
great results. how many vertices/faces were made for these sims specially the last one??
Sorry, but I didn’t record that info. Thinking about it I should of. Due to space constraints I no longer have the bake files. Sorry
This literally put things into perspective for me as I'm running 1000 res waterfall. I'm new to all of this, how do you ensure you can pick up a bake if it crashes blender? Is there anyway or would it be better to just bake like 10 frames, save, resume bake, etc?
If you use the FLIP fluid add-on then you will be able to continue from where it crashed. It is quite resilient. You may find it more stable to bake via command line than using the GUI. That’s what I’ve found anyway. :)
@@mattbeddis I keep seeing things mention command line bake. But I'm not sure what that all means. Does it mean I don't need to have blender showing the viewport of the bake? It just happens in the background? Is is easy to do?
@@wbdharris - This will only work with the FLIP fluid add-on. I haven't found a way of doing it with the built in Mantaflow yet. To do this all you need to do is create your scene and save the blend file. In the pull out side bar of the view port there should be a tab for "FLIP Fluids". Within that tab there should be a sub-menu called "Command line Tools". One of the options there is to "launch bake". This will open a command line window and bake the sim there. At this point you can close the main Blender UI until the sim completes.
Very nice. I have to imagine that it’ll be blazing fast working off of an SSD or M.2.
Got a new rig set up for sim which is much faster. :)
I was working in such 3D industries and I'm glad that I switched my skill to coding... less render time, less hardware requirement, equal or more profit.... somehow... but not absolutely sure, but I think I prefer coding. Just my opinion.
My full time job is a windows infra engineer. Coding in Powershell I can do. ;). This is just a hobby. :)
Nice
Thanks
For a large scale, the 5 day baking looked more real, for a smaller scale, the 30 minute baking looked better
I’m currently redoing this one to hopefully get a better scale reference.
Cool
Thanks
Is it baking the simulation that takes forever or the render? Im surprised at this honestly as houdini and unreal engine seems to manage these simulations hyper fast
It’s the baking that takes the real time. It all depends on the approach of the solver. I’m not entirely sure on how Houdini does it, but blender is only CPU based and doesn’t have adaptive domains for liquid. Also the math involved when you up the resolution. Doubling the resolution quadruples voxels so it’s very quick to get it out of hand.
2 is the best for me.
:)
i would stick to 128/256 resolution since it already looks good and i dont have enough patience to wait 1-5 days for it to bake and would turn the pc off when sleeping
Normally you would be right as I also have no patience. Lol. But this was testing. :)
I guess it would take a month or more to make water look realistic
On that machine yeah. My new one would be able to do it a little faster. :)
When the resolution is lower looks like it has less viscosity
(I know it's not so, just an observation)
Yup, this is why I love simulations. Finding out what things look like in different circumstances. Nuts how it all looks so different.
Would be interesting to see on High End Hardware.
I’d love to be able to turn up the resolution even more. Just don’t have the hardware. :(
Rtx 2080 = low end hardware?
@@indieanimation1 - Well, it’s not low end but if you’re not careful with particle counts you can easily run out of GPU memory. Blender uses the CPU for sims and so does the Flip fluid add-on. An i7 isn’t low end, but again it isn’t the best and takes its time when simulating.
256 looks the most realistic. others are way too exaggerated
Interesting how a higher resolution doesn’t necessarily make it better. :)
5 day with that spec is insane. Do you have separate pc for other work?
Yeah, I generally use a laptop. I have a tower in the basement that I do this on.
I wonder what kind of material you used. There is also foam
The water, foam and spray materials I used were just some of the defaults that come with the add-on.
Do you have this project saved? I would like to use it exactly to compare the baking time with my new computer.
Intel i9 ,rtx 4060, 32 ram
Sorry, I know longer have the .blend files. :(
5 days baking omg!))))
Yup, took a while. Need a faster machine.
I have an issue when I add an obstacle it splatter off way higher the res is just 256... I even lowered the inflow velocity and it still blast off like bomb is denoted..
Check your object scale. When you simulate you need to make sure you’ve set the scale of the objects properly. If you don’t it can cause issues like this.
Why does it look like jelly/honey texture? Higher the resolution is and fluider it become, but it’s still have that jelly vibe. Is there a way to change this?
Hi, this is due to a couple of reasons. It’s never as simple as a one click fix as there are so many variables with fluid sims. The main reason it looks like this is due to the scale. If you’ve ever noticed a large body of water always seems to move in slow motion compared to what comes out your taps. On top of that, there’s the resolution. Turning it up helps as you get more detail in the sim. The lower the resolution at this scale the more viscous it will appear. Hope that helps. :)
@@mattbeddis yesss that help a lot, I've didn't think about the scale factor, thank you for your answer :)
@@ledusko - No problem. :)
why i make beach flip fluid simulation with just 256 resolution and 240frames it takes 5-6 hours with my ryzen 9 5950x 64gb ddr4? do u have tips for making bake time more faster? i overclocked my cpu btw ;(
I don’t know your scene but try duplicating your geometry and then decimate the copies down to the bare minimum. Remove fluid physics from the originals and apply it to the decimated versions. Try your bake with that. High poly geometry will slow it right down.
they have same set? different only bake time with through resolution? if that right! wow!!!
Yes, The scene on all 4 is exactly the same. The only difference being the resolution.
I just have one question. Does this addon uses GPU to bake? Thx
Unfortunately. No. :(
@@mattbeddis thanks, I thought it can run on a GPU now I need to compare more features, and thanks again.
My GTX 980 is whispering in my ear - "I dare you. Three and a half weeks - but I dare you."
Gotta try these things. ;). You’d probably be surprised.
@Glub_blub integrated graphics can do the same if you switch the hours to months
Mais c’est sympathique quand même 😊
Thanks.
But is the 7200rpm HDD mounted horizontally or vertically because that is critical...
...sarcasm.
🤣🤣🤣🤣🤣. Diagonally! Lol
okay, i don't have the patience for 10 mins
Patience isn’t one of strong attributes. :)
You wouldn't need spray at this point
I find the add on generates too many bubbles with default settings. Seems to use most of what it’s allowed with those.
Looks like you still do not have mesh converges.
I don't even know if you can get mesh converges is this type of simulations.
I haven't looked into that so you're probably right. lol
How many space it takes on disk?
Sorry, I don’t have the bake files anymore so I can’t tell you. :(
Quantum computer has entered chat
Lol. Wishful thinking. :)
i bake 300 without the addon and it take arround 30-40 minutes
Very much depends on your system, viscosity and diffusion setting. There are so many performance variables it’s hard to compare bake times. Just the results.
I wonder how much would it take with core i9 14th gen
Would love to be able to answer that one. :)
@@mattbeddis im thinking to purchase the most expensive pc just for that
@@liridoncani you and me both but I think my wife may have something to say if I did that. Lol
Could you please provide the project documents? Thank you.
I've looked through my files and unfortunately I no longer have the .blend file. Due to the size of the simulation I must have removed it to save space. Sorry.
128 vs 1024 resolution has 8 times difference
128 vs 1024 simulation time has 240 times difference
128 vs 1024 resolution is 8 times however, that's just in one dimension. Remember that the domain is in three (Length, Width and height). It's all cubed.
interesting, i just baked a 512 res sim in 30 ish minutes? 250 frames, rtx 2060 super and a ryzen 7 5800x.
The GPU wouldn’t make a difference with the add-on as it uses CPU only. GPU would improve the render time though. You also have to remember that it might be 512 but that’s just in 1 dimension. Your domain might be a different ratio than mine. Also obstacle polygon count can have a major performance impact.
:O
Thanks. I think it’s cool. :)
😀
Thanks
wait what does "baking" mean i dont use blender
Running the simulation and saving it to a cache
And here i am thinking why my water looks fake after baking on 64 💀
64 is ok to test with but you really do need higher. It just takes so dam long to bake. :(
512 looks kinda "thick"
Yeah, looking back on it; I think it’s from the scale of the sim. Doesn’t help that my modelling and environment skills at the time were rubbish. :)
my 1660 Ti would cry
I think everything cry’s when you try fluid simulation. :)
@@mattbeddis 🤣
Are Fluid Simulation using GPU. i thought it was CPU processing
@@StevenRyan54 - The sims in Blender use the CPU. My comment was regarding the rendering due to particle numbers and mesh resolution.
Bro im just thinking about Moana
It’s crazy how far water effects and simulations have come. Just wish I had more TBs for bigger and longer sims. /)
5 Day!!!!!
Yup. 5 days. Left it over Christmas as an experiment.
@@mattbeddis wow
J’ai créé aussi quelques sims je vais les poster
I’ll give them a watch. :)
@@mattbeddis merci! Je les ai posté aujourd’hui. :)
5 freakin days.. gosh
A bit crazy really for something like that.
The First One Looks Like Semen ahha
There's always one with a dirty mind.. lol. ;)
pffffff 5 days :-(
Yup. Tempted to try a longer one.
5 days omg...
That was on an i7 something or other. I’m now running an i9-14900kf so they should be a little quicker. ;)
Why does the wife not care about the *FACT* that her husband has hands like a tree and can’t open the door?!?!!
Not entirely sure what that’s supposed to mean
i can do that in under 10 minutes + rendering 15 minutes
You must have a great spec machine. :)
:) yes i have 4060@@mattbeddis
@@PixelMiner. nice. :). Just a tab faster than my 2080. lol
And i though fluid flux was good..
I’m trying out Realflow at the moment. I might remake this video using it.
Les résultats sont vraiment inconstants… Blender quoi 🙄
True, but there are so many variables it’s hard to get it just right. :)
Too bad all these fluids. Just look like mercury. (Ever heard of adhesive forces? No? That's a force oft omitted when simulating fluids. If the adhesive force is larger than the cohesive force the fluid will "wet" the surface, explaining why mercury wets almost nothing.)
This was just using the plug-in. Something like that would need to be directed to the developers.
WHYYYYY use that music? It's horrendous.... like bro country elevator music.
Thought it was good at the time. Lol
so slow this addon.
It is slow, but compared to the built in Mantaflow it’s a lot faster.