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Everything posted by lukeiamyourfather

  1. Cannot see second HD inside Houdini

    It's likely a permissions issue. Does the user running Houdini also own the drive/directories? Is it a Linux native file system?
  2. Building a new station

    CUDA is a proprietary platform from Nvidia. There's an open source and free alternative called OpenCL which is what Houdini uses for things like Pyro and FLIP simulations among other things. You're right though, if CUDA is needed then Nvidia is the only option.
  3. Building a new station

    Are you sure you bought a Threadripper? They aren't that cheap.
  4. Help with Building my PC

    Processors marketed towards professional users like Xeon Scalable Processors and AMD Epyc are much more capable than their gaming and consumer targeted cousins. They offer things like... Multiple processor configuration options like dual and quad socket for machines with many processor cores More memory slots and more memory channels (maximum of 64-128GB of memory vs 2-3TB of memory) More PCI Express lanes for IO heavy devices like multiple GPU, storage controllers, NVMe, 10/40/100Gb networking (28-44 lanes vs 96-128 lanes) ECC memory and NVDIMM ready For some folks these features are absolutely necessary and the show stops without them. Other times it doesn't matter and the hardware is overkill. Since your original post is asking about a $2,000 processor I figured you were looking at higher end workstation hardware already. If the projects you're working on for the foreseeable future can live within 128GB of memory then an AMD Ryzen processor is a decent option. The Core i9 is decent as well but the AMD Ryzen will offer more bang for the buck. If you think you'll need more than 128GB of memory or you want some of the features listed above then consider server and workstation hardware. The higher end hardware costs more per unit of performance but it's worth it (or absolutely required) in some cases.
  5. Help with Building my PC

    That's a previous generation processor model. Unless you're getting a really good deal on it I'd pass and go with current generation models (Xeon Scalable Processors). The Core i9 series is limited to 128GB of memory which isn't enough for heavier scenes and simulations and it's limited to a single processor configurations. It's cheaper but I don't think the value is any better given the limitations. The i9 series is a good fit for some uses and not for others. Everything should have ECC memory and it's unfortunate that so many devices don't. It's marginally more expensive but it provides huge benefits. This blog post from James Hamilton sums it up much better than I could in a forum post (he's a Vice President and Distinguished Engineer on the Amazon Web Services team). https://perspectives.mvdirona.com/2009/10/you-really-do-need-ecc-memory/
  6. Building a new station

    The memory controller on the CPU should be the determining factor for the memory speed. There's little point in buying memory faster than what the CPU can actually use. When you get an idea of what CPU you want then lookup the memory controller specifications (like on Intel Ark) to figure out what speed memory makes the most sense to buy. At home I use Radeon cards and have for years because they offer more bang for the buck and they've been fine in Houdini. At work where money is less of an issue I've been using Nvidia cards but I think both are good options. Yes, with some compromises.
  7. Nvidia driver 396.24

    Please see my post in your other thread about drivers. Are you sure you're actually running the drivers? Did you install them from a download from Nvidia or did you use a repository?
  8. Strange VDB bounding box rendering

    Can you share the scene and the VDB?
  9. Which Nvidia driver are people running?

    Are you certain the machine is actually using the Nvidia drivers? Run "glxgears -info" and it should give you information about the driver in use. For example this is the output for the GTX 1060 I'm using on CentOS. You might have to install glxgears, not sure if it comes with Ubuntu or not. GL_RENDERER = GeForce GTX 1060 6GB/PCIe/SSE2 GL_VERSION = 4.5.0 NVIDIA 384.111 GL_VENDOR = NVIDIA Corporation
  10. Infrared Foliage effect

    Make the leaves white with lots of diffuse and translucency. I've shot a lot of digital infrared over the years (modified a few cameras to do so). If you want some raw photos to mess with I posted a bunch online (download the ZIP files). IR Stock Collection 2010 1 IR Stock Collection 2010 2 IR Stock Collection 2010 3 Changing the channels in Photoshop kind of works but not really. The values will look similar but the leaves will be too reflective and other things won't be right (glass looks black, the sky looks black, other stuff looks different besides just the leaves, especially people and clothes).
  11. Random Voronoi Fracturing

    Please don't double post.
  12. Noise in Render

    The archive appears to be corrupted. I wasn't able to extract it. In general you don't want to increase the minimum ray samples nor do you want to reduce the noise level. Both of those things will unnecessarily increase render times. Try increasing the maximum ray samples and/or the pixel samples. If the noise is caused by motion then increasing the pixel samples will likely be the answer. Not sure that global quality or diffuse quality matter in this scene since I can't extract it.
  13. scaling RBD sim problem

    The objects are way too big. One unit of distance in Houdini is equal to one meter. So that truck is half the size of a football field in the video attached to your post.
  14. AMD GPU on Arch Linux

    Ubuntu 18.04 LTS came out a few days ago so it might take a couple of weeks for drives to get worked out. Your timing is shit.
  15. Rendering time

    Don't use a noise level of zero. The default value is pretty good for most renders. Beyond that it's still hard to tell without looking at the scene file. What does the limits tab look like?
  16. Flip Fluid odd behavior

    Scale is critical for getting believable motion. One Houdini unit is equal to one meter for dynamics simulations.
  17. AMD GPU on Arch Linux

    Sort of... I would go with the proprietary drivers. More details on what works or doesn't work is on the X.org website. It probably would "work" but it would be a lot slower even if all of the features were functional. https://www.x.org/wiki/RadeonFeature/
  18. AMD GPU on Arch Linux

    If you're okay with using another distribution like Ubuntu or something Ubuntu based they come with the drivers already in the repositories. No shenanigans or compiling involved. I get the appeal of Arch Linux but I guess having to compile things to get work done on a production system is where I draw the line.
  19. Rendering time

    What kind of hardware are you using? Like what processor model and how much memory? If you can share the scene file it would make this a lot quicker and easier.
  20. Mplay error

    Do you have a firewall enabled? Are there exceptions setup for Houdini related ports? This is something support is going to be able to address better than the community. I would reach out to them directly.
  21. Best GPU for Render man and vray /stand alone

    I should've checked the date. My bad. Thanks!
  22. Best GPU for Render man and vray /stand alone

    What? There are tons of options out there. This is a moot point with the dynamic frequency scaling (Intel calls it Turbo). I regularly see above 3.0GHz on 2.2GHz chips when in "Turbo" mode for single threaded tasks. Mantra is one of the best renderers out there and there are many great CPU options that are reasonably priced. I think you're writing it off too easily and not really doing the research. If you must use a different renderer I'd do more research on them and really look at all the costs involved. GPU renderers look nice until you add up the cost of multiple high end GPU along with software license costs. These days a single GTX 1080 Ti is going for $1,200 because of crypto currency mining craze. Add up a few of those and now you can get some pretty freaking sweet processors for that kind of money.
  23. RAM cleanup

    Just ignore it. The cache manages itself and when it's out of memory it'll free some up. The cache helps performance so utilizing all of the memory for cache is a smart thing to do. Always having memory free and doing nothing is a waste of memory. It might also be the operating system level cache rather than the Houdini level cache. Same deal there, just let it do it's thing.
  24. Quad Sphere ?

    That's definitely more elegant and faster than what I posted. I like it.
  25. Quad Sphere ?

    A subdivided box will get pretty close but not perfect. From there there are a lot of ways to make it perfectly spherical if it needs to be perfect (example attached). quad_sphere.hipnc