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---
license: cc-by-4.0
task_categories:
- robotics
tags:
- robotics
- simulation
- OpenUSD
- Isaac-Sim
- synthetic-data
- physics
- mujoco
size_categories:
- 1K<n<10K
pretty_name: SimReady Assets (NVIDIA)
---
# NVIDIA SimReady Assets — Community Dataset Card
> [!NOTE]
> This card was produced by the community catalog project and offered to NVIDIA; numbers are computed programmatically from the repo tree and payload files on 2026-11-04. Verify against https://huggingface.co/datasets/nvidia/simready-assets for the latest state.
NVIDIA's **SimReady Assets** are simulation-ready 3D models for robotics and Physical AI: every asset ships with tuned physics (mass, inertia, collision approximations), materials, and variants for **PhysX**, **MuJoCo**, and **Newton** physics engines. The dataset contains **2,677 assets** totaling **489.68 GB** under **CC-BY-4.0**.
## Dataset at a glance
| | |
|---|---|
| Assets | 2,677 |
| Total size | 489.68 GB |
| Files | 183,398 |
| Categories | 14 |
| Articulated assets | 5 (0.2%) |
| PhysX variant | 2,669 |
| MuJoCo variant | 2,669 |
| Newton variant | 2,669 |
| License | CC-BY-4.0 |
| Data as of | 2026-11-04 |
## Directory structure
Each asset lives in its own top-level directory:
```
<asset_name>/
├── com.nvidia.simready.packaging.json # package id, license, sha256 hashes
├── .metadata/ # bill of materials
├── simready_usd/
│ ├── sm_<asset_name>_01.usd # main SimReady USD (binary USDC)
│ ├── payloads/
│ │ ├── base.usda # structure + variant sets
│ │ ├── instances.usda # per-mesh physics (neutral)
│ │ ├── instances_physx.usda # per-mesh physics (PhysX)
│ │ ├── instances_mujoco.usda # per-mesh physics (MuJoCo)
│ │ ├── instances_newton.usda # per-mesh physics (Newton)
│ │ ├── materials.usda # material definitions
│ │ ├── geometries.usd # mesh data (the big file)
│ │ └── PhysX/ MuJoCo/ Newton/ Physics/ # engine payload subdirs
│ ├── source_assets/ # original DCC files
│ └── Textures/
└── .thumbs/256x256/ # rendered thumbnails (lit/unlit)
```
**Tip:** for metadata and physics you only need the small text `.usda` payload files; `geometries.usd` holds the mesh data and dominates download size.
## Naming conventions
Asset names follow `<category>_<type>_<variant>` (e.g. `food_produce_banana_m01`, `appliance_dishwasher_a01`). Variant suffixes (`a01`, `b01`, `m01`, ...) distinguish design variants of the same object type. See NVIDIA's naming guide in the [simready-foundation](https://github.com/NVIDIA/simready-foundation) repo for the authoritative conventions.
## What's in the catalog
| Category (taxonomy group) | Assets |
|---|---|
| common_assets | 2,314 |
| props_isaac | 92 |
| props_food | 91 |
| omniverse | 85 |
| props_warehouse | 32 |
| SIM_READY | 32 |
| props_kitchenware | 6 |
| props_automotive_workshop_tools | 5 |
| props_softbody | 4 |
| props_endeavor_kitchen | 3 |
| props_automotive_parts | 2 |
| props_automotive_equipment | 1 |
| props_kitchen_france | 1 |
| props_hospital | 1 |
![Assets per category](assets/categories.png)
## Physics
Per-mesh physics properties (`physics:mass`, `physics:centerOfMass`, `physics:diagonalInertia`, collision `physics:approximation`) are authored in the `instances_*.usda` payloads. Asset mass below is the sum of per-mesh masses from the PhysX instance file.
| Mass (per-asset sum) | Value |
|---|---|
| Minimum | 0.000109254 kg |
| Median | 0.923211 kg |
| Mean | 1790.49 kg |
| Maximum | 952461 kg |
> [!WARNING]
> **Known data quality note:** 22 assets (0.82%) report a summed mass above 5000 kg (e.g. warehouse structural modules, an exhaust manifold at ~500,000 kg) — these look like authoring/export defects in NVIDIA's source USD rather than real weights. We report the numbers as-is, unmodified; use the **median** above rather than the mean when reasoning about a typical asset.
Collision approximations in use: `convexDecomposition` (9), `sdf` (10,658)
![Mass distribution](assets/mass_hist.png)
![Download size](assets/sizes_hist.png)
### Heaviest assets
| Asset | Mass (kg) |
|---|---|
| modular_warehouse_h10m_corner_out_a01 | 952461 |
| exhaustSystem_exhaust_manifold_f01 | 501226 |
| modular_warehouse_h10m_straight_90_a04 | 404025 |
| warehouse_h10m_straight_90_a04 | 400081 |
| warehouse_h10m_straight_a04 | 399748 |
| modular_warehouse_h10m_straight_a04 | 398601 |
| modular_warehouse_h10m_center_a01 | 302944 |
| set_office_main_a01 | 267161 |
| structure_wall_corner_a01 | 217653 |
| structure_wall_entrance_a01 | 192774 |
### Lightest assets
| Asset | Mass (kg) |
|---|---|
| hardware_bearing_caster_a01 | 0.000109254 |
| factory_nut_m4_loose | 0.000267644 |
| factory_nut_m4_tight | 0.000268642 |
| hardware_screw_95_a01 | 0.000406182 |
| hardware_screw_99_physics_a01 | 0.0005 |
| factory_bolt_m04_loose | 0.00063011 |
| screw_high_res | 0.000635557 |
| factory_bolt_m04_tight | 0.000651707 |
| hardware_bearingPin_a01 | 0.000784414 |
| factory_nut_m8_loose | 0.000992802 |
## Physics engine variants
Each asset declares MuJoCo / Newton / PhysX physics variants in `base.usda` (`Variants → Physics`), so the same asset can be simulated in any of the three engines:
![Variant coverage](assets/variants.png)
## Validation (SimReady Foundation)
Assets embed their own validation results (`SimReady_Metadata → validation`), produced by NVIDIA's [simready-foundation](https://github.com/NVIDIA/simready-foundation) tooling against the `Robotics-Prop` profile. Overall pass rate across parsed validation rows: **55.6%**.
| Feature | Pass rate | Passed / total |
|---|---|---|
| FET000_CORE | 91.8% | 3,187 / 3,471 |
| FET001_BASE_NEUTRAL | 1.5% | 54 / 3,690 |
| FET003_BASE_NEUTRAL | 99.9% | 3,684 / 3,689 |
| FET003_BASE_PHYSX | 99.3% | 3,610 / 3,637 |
| FET004_BASE_NEUTRAL | 42.6% | 1,571 / 3,690 |
| FET004_BASE_PHYSX | 42.3% | 1,538 / 3,637 |
| FET005_BASE_NEUTRAL | 65.4% | 2,412 / 3,690 |
| FET006_BASE_MDL | 1.2% | 40 / 3,470 |
| FET100_BASE_ISAACSIM | 0.0% | 0 / 1 |
Most common failing requirements:
| Failing requirement | Occurrences |
|---|---|
| RB.MB.001 | 3,973 |
| AA.001 | 3,464 |
| VM.MDL.001 | 3,417 |
| GSP.001 | 1,190 |
| NP.008 | 169 |
| HI.009 | 83 |
| COL.001 | 38 |
| VM.MAT.001 | 25 |
| RB.001 | 20 |
| NP.005 | 9 |
| VM.TEX.002 | 3 |
| PMT.001 | 3 |
| NP.006 | 2 |
| JT.002 | 2 |
| ISA.001 | 1 |
![Validation pass rates](assets/validation.png)
## Growth
Packaging dates extracted from package IDs run 2026-10-08 → 2026-11-02:
![Growth](assets/growth.png)
## How to use
**Isaac Sim / Omniverse:** add the dataset as a local or cloud asset root; `sm_*.usd` files are drop-in placeable with physics already tuned.
**Plain OpenUSD (Python):**
```python
# pip install usd-core
from pxr import Usd, UsdPhysics
stage = Usd.Stage.Open("food_produce_banana_m01/simready_usd/sm_food_produce_banana_m01_01.usd")
for prim in stage.Traverse():
mass = UsdPhysics.MassAPI(prim)
if mass:
print(prim.GetPath(), mass.GetMassAttr().Get())
```
**MuJoCo / Newton:** load the same `sm_*.usd` and activate the MuJoCo (or Newton) physics variant; or use `payloads/instances_mujoco.usda` directly.
## License & attribution
The assets are © NVIDIA Corporation, licensed [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/). When using assets (or derived data such as this catalog), credit "NVIDIA SimReady Assets" and link to https://huggingface.co/datasets/nvidia/simready-assets.
## Citation
```bibtex
@dataset{nvidia_simready_assets,
title = {NVIDIA SimReady Assets},
author = {NVIDIA Corporation},
year = {2026},
url = {https://huggingface.co/datasets/nvidia/simready-assets},
license = {CC-BY-4.0}
}
```
## Companion resources
- **Catalog parquets** (per-asset physics/validation/size tables): see this project's companion dataset
- **Interactive stats portal**: see this project's Space
- **SimReady Foundation** (validation specs & tooling): https://github.com/NVIDIA/simready-foundation
- **Isaac Sim**: https://developer.nvidia.com/isaac/sim
_Generated from repository data as of 2026-11-04; the dataset grows daily — re-run the pipeline for fresh numbers._