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davrens101/README.md

Davis Rens

Machine learning · Scientific computing · Physical systems

Co-founder & CSO, SuperMatics
Previously Rigetti Computing & Berkeley Lab · Berkeley, California

SuperMatics ↗  ·  LinkedIn ↗  ·  Selected work ↓

I'm a generalist drawn to the intersection of machine learning, scientific computing, and the physical world: how models learn, where they fail, and how to turn their predictions into useful decisions.

At SuperMatics, I work on accelerating superconductor R&D with quantum-mechanical simulation, machine learning, and real laboratory data.

What I work on

Learning & generative models

Optimization, representations, and the numerical details that make training and inference behave as intended.

Reliable AI systems

LLM serving, tool use, and evaluation. Correctness across streaming, batching, and persistent state.

AI for discovery

Simulation, uncertainty, and experimental data to decide what to measure, test, or build next.

Computation meets physics

Superconducting materials, quantum hardware, and cryogenics. Computational models grounded in physical constraints.

Selected pull requests

Merged contributions and open proposals across AI/ML, generative media, and scientific computing. Status is refreshed daily from GitHub; open does not imply accepted.

Project Pull request Status
Orb Models
Physical systems
Avoid NaN stress gradients for zero-volume molecular cells Merged
Vector Quantize PyTorch
Machine learning
Project decoded VQ codes along the feature axis for channel-first layouts Merged
Titans PyTorch
Machine learning
Preserve neural-memory retrieval across partial chunk continuations Merged
TorchGFN
Machine learning
Fix backward probabilities and gradients for resumed trajectories Merged
scikit-rf
Scientific computing
Respect scattering-wave definitions in physical two-port conversions Merged
SGLang
LLM serving
Correct streaming of multiple DeepSeek V3.1 tool calls Open
PyTorch Geometric
Graph learning
Prevent undirected negative sampling from returning edges already present in the graph Open
XGBoost
Machine learning
Reset early-stopping state between training runs when a callback is reused Open
PyTorch · TorchRL
Reinforcement learning
Restore CISPO policy gradients for clipped tokens to match the learning objective Open
PyTorch · torchvision
Computer vision
Make right-angle tensor rotations exact and fix expanded image dimensions Open
OpenAI · Whisper
Speech recognition
Accept NumPy scalar temperatures without crashing speech transcription Open
ComfyUI
Generative media
Prevent NaN noise schedules in single-step KL-optimal sampling Open
How I contribute · engineering approach & AI disclosure
  1. Pick issues a maintainer has signaled are ready to accept, and check nobody else is on them.
  2. Reproduce first: add a test that fails without the fix, then make the smallest change that passes it.
  3. Show before-and-after evidence, run the project's own checks, and report honestly which ones fail and why.
  4. AI coding tools assist with research, implementation, tests, and drafting. AI assistance and verification limits are disclosed in individual pull requests; human review is not implied.

Pinned Loading

  1. openai/whisper openai/whisper Public

    Robust Speech Recognition via Large-Scale Weak Supervision

    Python 113k 13.7k

  2. pytorch/pytorch pytorch/pytorch Public

    Tensors and Dynamic neural networks in Python with strong GPU acceleration

    Python 106k 30.7k

  3. huggingface/diffusers huggingface/diffusers Public

    🤗 Diffusers: State-of-the-art diffusion models for image, video, and audio generation in PyTorch.

    Python 34.9k 7.5k

  4. Comfy-Org/ComfyUI Comfy-Org/ComfyUI Public

    The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface. The fastest local inference engine in the world.

    Python 147k 17.5k

  5. vllm-project/vllm vllm-project/vllm Public

    A high-throughput and memory-efficient inference and serving engine for LLMs

    Python 96.9k 24.8k

  6. hiyouga/LlamaFactory hiyouga/LlamaFactory Public

    Unified Efficient Fine-Tuning of 100+ LLMs & VLMs (ACL 2024)

    Python 76k 9.4k