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google-deepmind
mujoco
C++2021–2026
google-deepmind / mujoco

mujoco

Multi-Joint dynamics with Contact. A general purpose physics simulator.

10Distinct people
11Mentions
0Explicit recommenders
17.8KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Multi-Joint dynamics with Contact. A general purpose physics simulator.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

Mentions over time

HN mentions by year11 dated mentions

Observed mentions: 2021-10-18 16:36:09 UTC to 2026-08-27 15:33:30 UTC.

01232021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 3 mentions; 2 submissions, 1 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments20232024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC321
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC211
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC110
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC303
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC211

What Hacker News says

11 sources
For workstations with GPUs and various kernel modules, rpm-ostree + GRUB + Native Containers for the rootfs and /usr and flatpaks etc on a different partition works well enough. ostree+grub could be much better at handling failover like switches and rovers that then need disk space for at least two separate A/B flash slots and badblocks and a separate /root quota. ("support configuring host to retain more than two deployments" https://github.com/coreos/rpm-ostree/issues/577#issuecomment... ) Theoretically there's a disk space advantage to container layers. Native Containers are bare-metal host images as OCI Images which can be stored in OCI Container Registries (or Artifact registries because packages too). GitHub, GitLab, Gitea, GCP, and AWS all host OCI Container/Artifact Registries. From https://news.ycombinator.com/item?id=44401634 re
Read the rest
bootc-image-builder and Native Containers and ublue-os/image-template, ublue-os/akmods, ublue-os/toolboxes w/ "quadlets and systemd" (and tini is already built-in to Docker and Podman) though ublue/bazzite has too many patches for a robot: > ostree native containers are bootable host images that can also be built and signed with a SLSA provenance attestation; https://coreos.github.io/rpm-ostree/container/ SBOM tools can scan hosts, VMs, and containers to identify software versions and licenses for citation and attribution. (CC-BY-SA requires Attribution if the derivative work is distributed. AGPL applies to hosted but not necessarily distributed derivative works. There's choosealicense.com , which has a table of open source license requirements in an Appendix: https://choosealicense.com/appendix/ ) BibTeX doesn't support schema.org/SoftwareApplication or subproperties of schema:identifier for e.g. the DOI URN of the primary schema.org/ScholarlyArticle and it's :funder(s). ... ROS on devices, ROS in development and simulation environments; Conda-forge and RoboStack host ROS Robot Operating System as conda packages. RoboStack/ros-noetic is ROS as conda packages: https://github.com/RoboStack/ros-noetic gz-sim is the new version of gazebosim, a simulator for ROS development: https://github.com/conda-forge/gz-sim-feedstock From https://news.ycombinator.com/item?id=44372666 : > mujoco_menagerie has Mujoco MJCF XML models of various robots. Mujoco ROS-compatibility: https://github.com/google-deepmind/mujoco/discussions/990 Moveit2: https://github.com/moveit/moveit2 : > Combine Gazebo, ROS Control, and MoveIt for a powerful robotics development platform. RoboStack has moveit2 as conda packages with clearly-indicated patches for Lin/Mac/Win: ros-noetic-moveit-ros-visualization.patch: https://github.com/RoboStack/ros-noetic/blob/main/patch/ros-... ... Devcontainer.json has been helpful for switching between projects lately. devcontainer.json can reference a local container/image:name or a path to a ../Dockerfile. I personally prefer to build a named image with a Makefile, though vscode Remote Containers (devcontainers extension) can build from a Dockerfile and, if the devcontainer build succeeds, start code-server in the devcontainer and restart vscode as a client of the code-server running in the container so that all of the tools for developing the software can be reproducibly installed in a container isolated from the host system. It looks like it's bootc or bootc-image-builder for building native container images? bootc-image-builder: https://github.com/osbuild/bootc-image-builder
In Nitro: A tiny but flexible init system and process supervisor
Hi John, I recall that, those ragdolls falling down stairs. From what I heard from a few Pixel employees, Pixar uses Bullet for some rigid body VFX effects, and Bullet still uses velocity-level LCP in combination with maximal coordinate constraints or with Featherstone-style reduced coordinate forward dynamics. The impulse/velocity-based contact model allows to model arbitrary soft contact (using contact force mixing (CFM) and error reduction parameter (ERP) terms), similar to spring-damper or MuJoCo-style contact (for MuJoCo see https://mujoco.readthedocs.io/en/latest/computation.html and https://github.com/deepmind/mujoco). For the last 10 years we use this also for robotics simulation for quadruped robots and robot arm grasping contact. Check out Erin Catto's presentation about re-inventing soft springs in this PDF: https://box2d.org/f
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iles/ErinCatto_SoftConstraints_GDC2011.pd... Furthermore, impulse/velocity-level LCP based constraint solving can be combined with finite element method (FEM) or mass-spring based deformable contact solving if higher-accuracy contact and friction modeling is needed.
In Pixar's notes on Rigid Body Simulation (2001) [pdf]

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