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Technical Discussion » Python comand line scripting import hou generates double free/corruption error

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gemof
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OK actually just solved this. Follow this guide to setup jemalloc: https://zapier.com/engineering/celery-python-jemalloc/ [zapier.com]

Then if you run external python as suggested importing Hou module won't error about jemalloc. As of writing this latest jemalloc is 5.2.1 so worth getting latest and changing bash commands appropriately: 

# installing jemalloc
wget https://github.com/jemalloc/jemalloc/releases/download/5.1.0/jemalloc-5.1.0.tar.bz2
tar xvjf jemalloc-5.1.0.tar.bz2
cd jemalloc-5.1.0
./configure
make
sudo make install

# running your app
LD_PRELOAD=/usr/local/lib/libjemalloc.so python your_app.py

FYI this is the doc showing how to load hou in external py interpreter: https://www.sidefx.com/docs/houdini/hom/commandline.html [www.sidefx.com]

However DLFCN was deprecated in py 3.6, so just change:
import DLFCN
sys.setdlopenflags(old_dlopen_flags | DLFCN.RTLD_GLOBAL)

to:
import ctypes
sys.setdlopenflags(old_dlopen_flags | ctypes.RTLD_GLOBAL)
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Technical Discussion » Python comand line scripting import hou generates double free/corruption error

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gemof
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I'm seeing this as well on Houdini 19 / Ubuntu 20.04.

In my case I have to user an external interpreter (Py 3.7.12 from deadsnake)since gRPC won't import into Hython with ctype errors.
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Technical Discussion » Anyone using gRPC with hython/ hou python on linux?

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gemof
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Hi all, experimenting with the Dapr library which uses gRPC. Unfortunately there's some weirdness with different gRPC versions and py 3.7.x

Anyone manage to get gRPC working?

Thanks!
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Houdini Jobs » Technical Art position in Microsoft Strategic Mission & Tech

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gemof
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Want to apply your Technical Art skills to space exploration, orbital data and solving real world problems? I'm looking for a long-term contract Technical Artist with Unreal and Houdini experience to join my team in the new Strategic Missions & Technologies group (Space, Federal, Quantum) at Microsoft. Great W/L balance in a diverse team of experiences and backgrounds. Will consider fresh graduates with the right skills. Must be US citizen or permanent resident.

linkedin dot com/jobs/view/2903079481/
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Houdini Engine for Unreal » Can't get simple point instancing to work using

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gemof
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Hi all, I'm having trouble getting a simple point instancer working in Unreal.

Here's what I've done:
1. Created a simple SOP HDA
2. Added a sphere
3. Scattered points on the sphere
4. Added a unreal_instance point attrib and set it to a reference path from UE.

However when I instance this HDA into a level in UE nothing happens. Just get the Houdini logo mesh. However If I do copy to points in the HDA that works and I can replace the geo with a UE reference.




Is there a special trick to getting vanilla point instancing working in UE?
Edited by gemof - Aug. 10, 2021 03:03:26
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Houdini Engine for Unreal » ...attribute instancers need to be in a separate Part...

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gemof
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Yeah the docs on instancing are cryptic at best. I did the same and took that as needing a separate output.
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Houdini Jobs » Remote possible Houdini Pipeline TD/TA @ Microsoft

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gemof
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JD is now live!
https://www.qanalysts.com/careerportal/#/jobs/129131 [www.qanalysts.com]

Please PM me if you have further questions.

Thanks!

Geordie
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Houdini Jobs » Remote possible Houdini Pipeline TD/TA @ Microsoft

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gemof
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UPDATE:
Apply here https://www.qanalysts.com/careerportal/#/jobs/129131 [www.qanalysts.com]


Hi all! Want to work at the crossroads of 3D Content Creation, Machine Learning and Cloud Compute while collaborating with teams in Azure, Mixed Reality (AR) and XBox? I have a long-term contract position open to anyone residing in the USA who has work authorization:

Responsibilities
  • Create procedural tools for generating 3D environments with control for varying terrain, biome, population, road networks, etc.
  • Create procedural tools for populating 3D environments with assets in a logic-based approach (vegetation, rocks, clutter, props, humans, buildings, etc.)
  • Use Python to interact with external data sources and APIs.
  • Collaborate with Developers and Artists in defining features and tools that improve content pipelines
  • Collaborate with leadership to define schedules and deliverables
  • Creating HDAs to share with other artists.
  • Procedural geometry creation with SOPs.
  • Develop new Materials and Shaders from scratch.


Bonus Skills
  • USD/Solaris data and pipelines.
  • PDG/TOPs
  • Use VEX to create efficient geometry algorithms.
  • Fire & Smoke VFX.
  • Knowledge Physically Based Rendering and photoreal materials, lighting, cameras etc.
  • Arnold materials and shaders.
  • Working knowledge of Maya.
  • GIS and map data.

PM me for the details as the positions haven't been posted yet.

Thanks!

Geordie Moffatt
https://www.linkedin.com/in/geordiemoffatt/ [www.linkedin.com]

Senior Technical Art Director
Studio Alpha - Microsoft
Edited by gemof - April 19, 2021 13:20:15
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Solaris » Karma output error through PDG

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gemof
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Yeah I just randomly hit his as well rendering with Arnold. Everything was working but head weird scene cooking artifacts. As soon as I got that working this error appeared.
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