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Everything posted by lukeiamyourfather

  1. Bullet: small objects not stopping to move

    I think they're good. This thread is from 2014...
  2. NTFS vs ext4 file system for houdini swap

    FAT isn't suitable for a caching partition because it has a file size limit of 4GB. I also wouldn't use exFAT or NTFS because they're implemented in Linux via FUSE which is a user space file system framework (significantly slower and less reliable than kernel level implementation). There's a commercial product for reading ext3 in Windows but it's not something I'd rely on given the choice. There really isn't a good option that will serve both Linux and Windows. I would setup a script that formats the drive for you when you need it (one for Windows and one for Linux). Either that or just use it in one operating system rather than multiple. If you need to use the same data in multiple operating systems consider network storage rather than local storage. Network file sharing protocols like SMB obfuscate the underlying file system so it doesn't matter what operating system the client is running. A file server with 10Gb Ethernet and many drives (or a few fast drives) can be just as fast if not faster than local storage.
  3. 2 x 512GB M.2 SSD's - set up as RAID 0 or...

    If the M.2 SSD are SATA it might be worthwhile to deal with RAID to get the extra performance. Most M.2 drives on sale now are SATA, not NVMe. If they're NVMe then it's not worth while because they're already faster than an application could fully utilize anyway. If you're running Linux you could use ZFS on Linux to create a pool of them and bypass the motherboard RAID (which would probably be slower than ZFS on Linux anyway).
  4. How much RAM is enough

    This requires overclocking so all bets are off. It might work for one person but not another. With four single rank DIMM the max speed for the memory controller on that CPU (without overclocking) is 2133 MHz which is what you're seeing now. This thread might be helpful. https://linustechtips.com/main/topic/788240-buying-ryzen-confused-about-ram-read-here/
  5. mantra: Error writing data to image device

    Please don't revive four year old threads.
  6. How much RAM is enough

    What processor do you have? The memory controller is on the processor and it'll affect the maximum speed of the memory. Most higher end memory is marketing bullshit and doesn't affect performance for most users. Overclocking involving more than just the processor multiplier being the exception to that. In the "real world" the differences will be minimal between one speed of memory and another. It's also a moot point to compare anything to 3200 MHz memory because almost nothing out there can support that without overclocking.
  7. Multiple cameras, one cook?

    Mantra renders only what it needs to on a per pixel level so there wouldn't be any savings in terms of calculations like that. The IFD file could potentially contain the entire scene but it can also use existing geometry on disk that's already cached out. This is where you'll find the most potential for optimization. If you can cache as much as possible before the IFD stage then there's less duplicated data (less disk space required, less network throughput required, etc.). If your IFD folder is more than a hundred megabytes in total then there's room for optimization here. Use File nodes that load packed geometry and Mantra will load them directly rather than stuffing them into the IFD. It sounds like you might be trying to render out a cube map or something like that. Mantra has several cameras for VR and surround rendering. If that's what you're doing you might want to check those out.
  8. Faster RAM, is it worth it?

    Buy the fastest memory your processor can support. This is not the same as the fastest memory your motherboard can support (that's just advertising bullshit because the processor has the memory controller on die). If you're not sure then lookup the specific processor.
  9. Looks like you got it all working. That's good. Note that Linux assumes nothing about permissions. Windows assumes a lot. That chown command changes the owner of the directory (which is the entire drive in this case).
  10. Do the values go negative and get clamped or something along those lines? It looks like it crosses and axis when it stops working. Without the scene file it's hard to say.
  11. NTFS isn't a Linux native file system. I strongly encourage you to use a Linux native file system. Seriously. Recent versions of Ubuntu come with ntfs-3g by default which will let you read and write NTFS so it's likely a permission issue, not anything related to the fact that it's NTFS. If the permissions are sane then it's likely the NTFS volume is damaged (ntfs-3g will mount as read only if serious errors are found). More reasons why you shouldn't use NTFS on Linux... ntfs-3g is implemented with FUSE which is user space framework instead of kernel space so it's stupid slow compared to native file systems Linux has no comprehensive NTFS check utility so errors go unnoticed and can compound Some applications use extended attributes which can't be stored in foreign file systems like NTFS
  12. Linux Mint pros cons

    If you're not sure then that means the normal download where it just says "Linux" and nothing after it.
  13. 2018 Build Discussion

    No. The turbo frequency stuff in recent processors is legit. If you're using only one thread it'll kick the clock speed way up automatically. It does this at the expense of heat and power being "wasted" by comparison. That one core running at the much higher clock speed uses as much power as the rest of the cores combined running at the base clock.
  14. 2018 Build Discussion

    The Xeon W series is for single socket systems. Note where it says "1S Only" on the specifications. https://ark.intel.com/products/126793/Intel-Xeon--W-2195-Processor-24_75M-Cache-2_30-GHz This is the multiple socket capable equivalent (up to four sockets). https://ark.intel.com/products/120485/Intel-Xeon-Gold-6140-Processor-24_75M-Cache-2_30-GHz If the processor is capable of it then it's a no-brainer. Go with ECC memory whenever possible.
  15. Linux Mint pros cons

    I started using Linux Mint because Unity is crap. I used Ubuntu GNOME for a while but it was a second class citizen in the Ubuntu ecosystem which got old fast. I haven't seen any other benefit to Linux Mint other than the interface is better than Unity. Once Ubuntu goes back to GNOME for an LTS release I'll probably move back to Ubuntu. That should be with Ubuntu 18.04 LTS. The interfaces have some quirks that are reminiscent of other platforms but under the hood they're exactly the same. If you like one interface over another then use it but beyond that there's no difference. They handle them practically the same. One has a slightly different GUI to add them but most people add them through the terminal so it's a moot point. I would say it's a worse option now that GNOME is going to be a first class citizen again in Ubuntu. Either way though the differences are going to be minimal. Just be sure you're going with something that has sufficient support for your needs.
  16. How to create a custom deep channel

    That's exactly what the Pz channel is for. Pz, not P.
  17. Memory speed, DDR4 2666 vs DDR4 3466

    Get the fastest memory you can up to the limit of the memory controller on the processor. Anything faster than the limit of the memory controller on the processor is either a waste of money or only useful for overclocking without an unlocked multiplier. https://ark.intel.com/products/123613/Intel-Core-i9-7900X-X-series-Processor-13_75M-Cache-up-to-4_30-GHz In this specific case anything faster than DDR4-2666 is likely a waste of money. It's different for different processors. Also don't bother with cost adding features like heat spreaders, LED lighting, and other marketing bullshit that has zero impact on performance.
  18. Realtime rendering in browser

    I've looked into this a few times. It's a higher level API for WebGL. https://threejs.org/ Most of the 3D stuff I've ever seen in the web browser has been done with it. If you browse the examples you'll see it's pretty flexible and powerful. This is one of my favorites. http://hellorun.helloenjoy.com/
  19. Fabric Engine no longer being developed

    It's possible the buyer isn't going to be selling the software anymore - like a studio. Or there could've been legal trouble or other issues causing them to cease development. Whatever the case I hope the folks involved land on their feet (or in a giant pile of money like Scrooge McDuck).
  20. Import and Render multiple Pyro sims as VDBs

    If you're rendering in Mantra, yes. If you're rendering in something else like Arnold then use VDB. Just use a file node to load the BGEO or VDB files. Ignore how they look in the viewport cause it'll be wrong or just use a bounding box in the viewport. They'll render sanely in Mantra using the Pyro material because it's looking for the field names which will all be correct (even if the viewport is garbage).
  21. Yes, both Python 2.X and 3.X can be on the machine at the same time. Python 2.X is usually just the command "python" and Python 3.X is usually the command "python3" so once installed it should work fine. You can install Python 2.X on Ubuntu 16.04 with the command below. sudo apt-get install python
  22. Hqueue Clients

    Yes. In my experience the network install never works quite right. Are you running jobs with existing IFD archives that were manually generated in Houdini? Or is the farm trying to generate the IFD archives on the fly? If trying to generate the IFD archives on the fly from a Houdini scene file you need a Houdini Engine or Houdini license on the farm to generate the IFD archives. Mantra will render an image using an IFD archive, not a Houdini scene file. Only Houdini can generate the IFD archive needed by Mantra.
  23. Advanced bubbles effect

    Translated: Can I upload project files? Yes, there's a paperclip icon in the bottom left of the text box for a new post. Click the "choose files..." link to the right of it. If it's a bigger file maybe use a file hosting service instead.
  24. The iMac Pro is going to be the first serious effort Apple has made in half a decade or more for professional users. Unfortunately it's probably going to be more than twice the price of anything comparable and it still has gaping huge holes everywhere in the design. It has two memory slots meaning it can take up to 128GB of memory total. Why?!?!?! My laptop has two memory slots and it's a laptop. That Xeon crammed in there can support 1.5TB of memory (that's right, terabytes). Rant over, I'd go with the HP. I've worked with Houdini on macOS and it was a second class citizen. There were many bugs not found on other platforms and I felt like a guinea pig constantly, it might be better now since this was like five years ago but I wouldn't try it again personally.