My interests are in Artifical Intellegence, Robotics, and Tangible Interaction Design mostly surrounding systems with multiple agents. I've done other work in the past on distributed and embedded systems, the web and high performace computing. Right now I am working on the developement of Autonomous Vehicles at NVIDIA. I am a Colorado native and completed my undergrad at the University of Illinois at Urbana-Champaign in Computer Engineering. In my free time I work on / advocate for open source, play rugby, soccer and tennis, race bikes and from 2016 to 2017 I served as the Chair of the UIUC Chapter of the ACM.
Academic and Professional Timeline
- 2018 / NVIDIA / Automotive Deep Learning Solution Architect
- 2017 / NVIDIA / Automotive Deep Learning Solution Architect Intern
- 2016 / University of Illinois Urbana-Champaign - Bretl Research Group / Undergraduate Research Assistant under Professor Tim Bretl
- 2016 / Nest Labs / Embedded Software Engineering Intern
- 2014 - 2018 / University of Illinois Urbana-Champaign - Vision Group / Undergraduate Research Assistant under Professor Derek Hoiem
- 2013 - 2014 / University of Colorado Boulder - Correll Lab / High School Research Assistant under Professor Nikolaus Correll
Publications, Preprints and Technical Reports
[PTED] TRTorch: A Compiler for TorchScript Targeting NVIDIA GPUs with TensorRT
We present TRTorch, a compiler for PyTorch and TorchScript targeting NVIDIA GPUs, which combines the usability of PyTorch with the performance of TensorRT allowing users to optimize easily inference workloads on NVIDIA GPUs. For experimentation and the development of machine learning models, few tools are as approachable as PyTorch. However, some of the features that make PyTorch great for development make it hard to deploy. With TorchScript, PyTorch now has solid tooling for addressing some of these problems. TorchScript removes the dependency on Python and produces portable, self contained, static representations of code and weights. In addition to portability, users also look to optimize performance in deployment. On NVIDIA GPUs, TensorRT, NVIDIA’s deep learning optimizer, provides the capability to maximize performance of workloads by tuning the execution of models for specific target hardware. TRTorch merges the benefits of TorchScript and TensorRT to simplify conducting optimization including post training quantization by leveraging common PyTorch tooling. It can be used directly from PyTorch as a TorchScript Backend, via CLI or embedded (C++/Python) in an application to easily increase inference performance.
[arXiv:1606.05002] 3DFS: deformable dense depth fusion and segmentation for object reconstruction from a handheld camera
We propose an approach for 3D reconstruction and segmentation of a single object placed on a flat surface from an input video. Our approach is to perform dense depth map estimation for multiple views using a proposed objective function that preserves detail. The resulting depth maps are then fused using a proposed implicit surface function that is robust to estimation error, producing a smooth surface reconstruction of the entire scene. Finally, the object is segmented from the remaining scene using a proposed 2D-3D segmentation that incorporates image and depth cues with priors and regularization over the 3D volume and 2D segmentations. We evaluate 3D reconstructions qualitatively on our Object-Videos dataset, comparing to fusion, multiview stereo, and segmentation baselines. We also quantitatively evaluate the dense depth estimation using the RGBD Scenes V2 dataset [Henry et al. 2013] and the segmentation using keyframe annotations of the Object-Videos dataset.
[TEI '14] Gesture based distributed user interaction system for a reconfigurable self-organizing smart wall
We describe user interactions with the self-organized amorphous wall, a modular, fully distributed system of computational building blocks that communicate locally for creating smart surfaces and functional room dividers. We describe a menu and a widget-based approach in which functions are color-coded and can be selected by dragging them from module to module on the surface of the wall. We also propose an on-off switch gesture and a dial gesture each spanning multiple units as canonical input mechanisms that are realized in a fully distributed way.
TRTorch: A PyTorch/TorchScript Compiler Targeting NVIDIA GPUs Using TensorRT
"We'll dive into TRTorch, a new compiler for PyTorch and TorchScript that optimizes deep learning models for inference on NVIDIA GPUs. Programs are internally optimized using TensorRT but maintain full compatibility with standard PyTorch or TorchScript code. This allows users to continue to feel like they're writing PyTorch code in their inference applications while fully leveraging TensorRT. We'll cover how the compiler works internally and different ways to leverage the compiler."
PyTorch-TensorRT: Accelerating Inference in PyTorch with TensorRT
"TensorRT is a deep-learning inference optimizer and runtime to optimize networks for GPUs and the NVIDIA Deep Learning Accelerator (DLA). Typically, the procedure to optimize models with TensorRT is to first convert a trained model to an intermediary format, such as ONNX, and then parse the file with a TensorRT parser. This works well for networks using common architectures and common operators; however, with the rapid pace of model development, sometimes a DL framework like Tensorflow has ops that are not supported in TensorRT. One solution is to implement plugins for these ops. Another is to use a tool like TF-TRT, which will convert supportable subgraphs to TensorRT and use Tensorflow implementations for the rest. We'll demonstrate the same ability with PyTorch with our new tool PTH-TRT, as well leveraging the PyTorch API's great composability features to allow users to reuse their TensorRT-compatible networks in larger, more complex ones."
Lecture: Intro to Convolutional Neural Nets
"A quick crash course in using neural nets for Computer Vision. Builds up from logistic regression to CNNs with implementations in PyTorch"
Intro to Convolutional Neural Nets and Implications of Deep Learning and AI
"Artificial Intelligence has entered a great age of productivity, with massive strides in Computer Vision, Natural Language Processing and Task Learning being enabled by the exponential growth in data availability and the computing power enabled by General Purpose GPU (GPGPU) computing. Developers can now create near state of the art AI applications on their laptops. This talk will cover one of the main tools in deep learning and AI: Convolutional Neural Networks (CNN), how to build one, and how to apply it to a problem like handwriting recognition. It will then explore some of the current problems and approaches in the field of AI such as self driving cars, machine translation, and robotics."
Navigating Learning in the Multidisciplinary World
"What skills are necessary to succeed in a world that's becoming more and more complex? Is it better to specialize, focusing on one subject area? Or is it better to have an inter-disciplinary approach? Why the future of work lies not within specialization, but in the ability to draw on design thinking and immediate problem solving to solve the world's big challenges."
CS 196 - CS Projects
First and Second year projects course teaching prototyping, ideation and introduction to sotfware engineering;
TRTorch: A compiler for TorchScript Targeting NVIDIA GPUs
Writing a compiler for PyTorch that optmizes neural nets for NVIDIA GPUs
Naren's Web Directory
Throwback to a time before 4 websites ruled the Internet, and the case for bringing back source curation
Real Time Autonomous Vehicle Perception on Heterogenous Hardware
Showing how you can use DRIVE AGX and its suite of accelerators to achive real-time perception for self driving cars