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README.md
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---
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license: apache-2.0
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task_categories:
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- image-to-image
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tags:
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- physics
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- cfd
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- digital-twin
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- datacenter
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- surrogate-model
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- neural-operator
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- nvidia
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- physicsnemo
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pretty_name: "Boreas: Datacenter Digital Twin Surrogate Predictions"
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size_categories:
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- 1K<n<10K
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---
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# Boreas Data — Datacenter Digital Twin Surrogate Predictions
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Prediction outputs from five neural surrogate models trained on [NVIDIA PhysicsNeMo-Datacenter-CFD](https://huggingface.co/datasets/nvidia/PhysicsNeMo-Datacenter-CFD) for **Project Boreas** (SJSU MSDA capstone, Spring 2026).
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This dataset powers the [Boreas Omniverse Kit operator console](https://github.com/irangareddy/kit-app-template) — a custom NVIDIA Omniverse application with an LLM agent (GPT-4o) and Apple Vision Pro AR streaming.
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## Contents
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| Folder | What | Count | Size each |
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|--------|------|-------|-----------|
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| test_data/inputs/ | 10-channel input tensors (80x96x960) | 10 | 282 MB |
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| test_data/targets/ | 5-channel CFD ground truth (80x96x960) | 10 | 141 MB |
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| outputs/predictions/ | Model predictions (5-ch, 80x96x960) | 50 | 141 MB |
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| stl/ | OpenFOAM datacenter geometry | 6 | < 1 MB |
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| results/ | Evaluation metrics JSON | 2 | < 1 MB |
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**Total: 79 files, ~11 GB**
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## Five surrogate models
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| Model | Family | Params | T MAE (C) | Inference (ms) |
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|-------|--------|--------|-----------|----------------|
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| **U-Net** | Spatial (CNN) | 22.6M | **0.205** | 177 |
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| PI-U-Net | Spatial + physics | 344K | 0.244 | 87 |
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| FNO | Spectral (FFT) | 28.3M | 0.489 | 636 |
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| PI-FNO | Spectral + physics | 28.3M | 0.505 | 674 |
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| Transolver | Transformer | 545K | 0.598 | 4,972 |
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Trained at full resolution (960x96x80 = 7.37M points) on NVIDIA GB10 (Grace Blackwell, 128 GB).
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## File naming
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Predictions: `outputs/predictions/sample_NNNN_MODEL.npy`
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- NNNN = 0000-0009 (from PhysicsNeMo test split)
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- MODEL = unet, fno, pifno, pi_unet, or transolver
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- Shape: (5, 80, 96, 960) — channels: Ux, Uy, Uz, T, p (Z-score normalized)
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## Denormalization
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| Field | Mean | Std | Unit |
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|-------|------|-----|------|
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| T | 39.0 | 4.0 | C |
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| Ux, Uy, Uz | 1.5984 | 1.3656 | m/s |
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| p | 6.1227 | 4.1660 | Pa |
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To convert: `T_celsius = prediction[3] * 4.0 + 39.0`
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## Quick start with Kit app
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```bash
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git lfs install
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git clone https://huggingface.co/datasets/irangareddy/boreas-data ~/boreas-data
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git clone https://github.com/irangareddy/kit-app-template.git
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cd kit-app-template
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.\repo.bat build
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.\run_streaming.bat
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```
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## Quick start in Python
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```python
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import numpy as np
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gt = np.load("test_data/targets/sample_0000.npy")
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pred = np.load("outputs/predictions/sample_0000_unet.npy")
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T_gt = gt[3] * 4.0 + 39.0
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T_pred = pred[3] * 4.0 + 39.0
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print(f"Temperature MAE: {abs(T_pred - T_gt).mean():.3f} C")
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```
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## Source
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Derived from [nvidia/PhysicsNeMo-Datacenter-CFD](https://huggingface.co/datasets/nvidia/PhysicsNeMo-Datacenter-CFD) (Apache 2.0).
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## Citation
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```bibtex
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@misc{boreas2026,
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title={Evaluating Neural Operator Architectures for Datacenter Digital Twin Surrogate Models},
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author={Nukala, Sai Ranga Reddy and Kankanala, Shaila Reddy and Singh, Sadhvi and Jonnalagadda, Akshith Reddy and Shim, Simon},
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year={2026},
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institution={San Jose State University},
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url={https://github.com/irangareddy/298AB}
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}
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```
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## Links
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- Research: [github.com/irangareddy/298AB](https://github.com/irangareddy/298AB)
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- Kit app: [github.com/irangareddy/kit-app-template](https://github.com/irangareddy/kit-app-template)
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- Source data: [nvidia/PhysicsNeMo-Datacenter-CFD](https://huggingface.co/datasets/nvidia/PhysicsNeMo-Datacenter-CFD)
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