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Houdini Lounge » Any other part of 20.5 optimized for RTX 4xxx, besides Karma

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GCharb
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I just read the chart, the RTX 4070 TI Super is 15.67% faster than the RTX 3090 for OpenCL, it might not be enough of a reason to buy an RTX 4070 TI Super, and the RTX 3090 has more ram, the only reason to get a RTX 4070 TI Super would be much faster ray-tracing, but you get 16 GB of VRAM instead of the 3090 24 GB, it really depends on the kind of work you do!
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Houdini Lounge » Any other part of 20.5 optimized for RTX 4xxx, besides Karma

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GCharb
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Like I said, it's a toss between VRAM, rendering power, and price, I choose the RTX 4070 TI Super because I felt that it was the best bang for my buck, 16 GB of VRAM filling most of my needs, but if you need more VRAM, than either stick to the RTX 3090, which is still a great card BTW, but you'll miss on render power, the RTX 4090 is also an option, of course, but they cost double the RTX 4070 TI Super!

There are rumours about an RTX 5xxx series coming out by the end of the year, the RTX 5090 could have as much as 32GB of DDR7 VRAM and be 70% faster than the RTX 4090, you might want to wait for more info on those, but so far it's only a persistent rumour, no official announcement from Nvidia!
Edited by GCharb - July 12, 2024 14:03:56
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Houdini Lounge » Any other part of 20.5 optimized for RTX 4xxx, besides Karma

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GCharb
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LukeP
Thank you kindly. So in summary 4070 should be in general faster than 3090 in karma xpu but in other areas of Houdini where OpenCL is used - 3090 would be faster?

Here is an OpenCL benchmark...

OpenCL Benchmark [browser.geekbench.com]
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Houdini Lounge » Any other part of 20.5 optimized for RTX 4xxx, besides Karma

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GCharb
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Karma XPU was optimized for the Nvidia ADA Shader Execution Reordering found in the Nvidia ADA Lovelace GPU, so my understanding is that it only affects shader efficiency and rendering.

For more info...

Nvidia ADA Shader Execution Reordering [developer.nvidia.com]

To give you a better idea which GPU is best for 3D, look at the Blender Open Data page, it shows the results for the Blender benchmark, higher is better...

Blender Open Data [opendata.blender.org]

RTX 4070 TI Super (Windows): 7291.23
RTX 4070 TI Super (Linux): 7577.32

RTX 3090 (Windows): 5491.67
RTX 3090 (Linux): 5712.01

Hope this helps
Edited by GCharb - July 12, 2024 11:10:19
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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Did some Pyro test renders in H20.5 at 512 samples, average frame render time 7 seconds, a tad more than 2.5X faster than 20.0

I am loving this...
Edited by GCharb - July 11, 2024 20:58:35
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Houdini Lounge » 20.5 - what are stil some limitations of Vulcan VP?

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GCharb
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Go into Preferences/3D Viewport...
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Houdini Lounge » which operating system is most stable with houdini?

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GCharb
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In my previous tests I was getting 10-15% faster renders on Linux compared to Windows, having the latest Nvidia drivers is essential though, assuming that you have an Nvidia GPU.

Usually you need special procedure to get the latest Nvidia drivers, like adding the proper drivers' repository, here is how you install the latest drivers on Linux Mint or Ubuntu...

Add this repository to your Linux Mint system by running the following command in a terminal:
sudo add-apt-repository ppa:graphics-drivers/ppa -y
With the PPA imported, run an APT update:
sudo apt update
Next, enter the following command in the terminal to display recommendations for your graphics card:
ubuntu-drivers devices
If you are satisfied with the recommended version, use this command to install it:
sudo ubuntu-drivers autoinstall
Alternatively, you can install a specific driver version by choosing from the commands below:
sudo apt install nvidia-driver-555
Once the installation is complete, reboot your system for the changes to take effect:
reboot

Hope this helps
Edited by GCharb - July 11, 2024 15:34:18
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Houdini Lounge » which operating system is most stable with houdini?

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GCharb
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I'd say Linux, I use Mint 21.3, Houdini is much faster with it than Windows, I find it to be more stable too, and you can run both Windows and Linux on the same PC, in case you absolutely need some Windows only apps!

Linux Mint [linuxmint.com]
Edited by GCharb - July 11, 2024 13:53:49
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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LukeP
Are you using Vulcan or OpenGL viewpoints for sculpting with 5M and 5 layers?
Vulkan!
Edited by GCharb - July 11, 2024 10:37:13
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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SideFX just released a new tutorial for Copernicus...

How to Create Organic Textures [www.sidefx.com]
Edited by GCharb - July 11, 2024 09:36:46
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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I find that the RTX 4070 TI Super is the best buy for your money, for more VRAM you'd need a RTX 4090, which are double the price!
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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LukeP
Wonder if this is specific to 4xxx or also to 3090
Specific to Nvidia ADA Lovelace graphics cards, that's the GPU for the RTX 4.x cards, those GPUs have better ray-tracing capabilities than previous Nvidia GPUs, XPU was optimized for those GPUs in H20.5!
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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Just tested the Bar Scene from the Content Library on my RTX 4070 TI Super 16GB VRAM, default settings with 512 samples...

H20.0 - 8m 57s
H20.5 - 3m 11s

That's a tad over 2.8X faster, more and more impressed with H20.5 XPU rendering on RTX 4.x cards!
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Houdini Lounge » The future of Houdini if Solaris / USD is not for you.

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GCharb
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I build all my scenes at the OBJ level, then add a LOP Network, in the LOP node I import the scene, add a Karma node, then I am set, pretty straightforward IMHO, I don't see why some people seem to freak out about Solaris when it is so simple to use!
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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LukeP
What graphics card?

RTX 4070 TI Super 16GB VRAM

LukeP
I’m running into annoyances with the sculpt tool. When I brush over, the brush seems to pause every second or so, then picks up, pauses, annoying interaction… not sure if this is a card issue or what….

I just did a test and I went up to 5M polys with no issues, was pretty smooth with 5 layers, I run Linux Mint 21.3, it might help, since Houdini is faster on Linux!
Edited by GCharb - July 10, 2024 21:21:16
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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You can easily create sculpt layers by stacking nodes, in this example I created 2 layers, remeshgrid1 is set to .05, remeshgrid2 is set to .025, so each layer is remeshed and has its own level of details, works perfectly, sculpt data is passed down no problems, I am loving this, not a full-blown sculpting tool, but still pretty cool!
Edited by GCharb - July 10, 2024 20:18:06
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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wanglifu
Hi,we still don't have one option to delete or rename these presets.
What presets exactly?

Playing with sculpting at the moment, man this is cool, SideFX developers are completely mad, mad I tell ya!
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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brians
GCharb
I did a few more render tests with XPU ray-trace

What driver are you on?
If you're on a 555+ driver, then you'll get the NVidia "Shader Execution Reordering" feature (new hardware in the ADA generation of GPUs)
I run 555.52.04, always the latest, on that last render I get a bit over 2.5X speed increase, very pleased with my little graphics card at the moment!
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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I did a few more render tests with XPU ray-trace, and I must say that I am quite impressed, I rendered the first frame of the Camera Clouds scene from the Content Library, using the default settings, a Voxel Size of 3 for the clouds, and 512 samples...

H20.0 - 17m 47s
H20.5 - 7m 3s
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Houdini Lounge » Houdini 20.5 is out for grab!

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GCharb
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I rendered the Billowy Cloud scene from the Content Library with XPU, with default settings and 1024 samples...

H20.0 - 9m 38s
H20.5 - 6m 30s

My specs...

Linux Mint 21.3
AMD Ryzen 9 5950X 16 cores
128 GB of DDR4 @3200
Nvidia RTX 4070 TI Super

So far I can't see much of a difference with the Vulcan viewport, but it is on by default, I will test with a much larger scene, so far it looks pretty good, next, Copernicus...
Edited by GCharb - July 10, 2024 16:22:20
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