Hi! I am Ashwin Nanjappa. Welcome to my corner of the web.

I accelerate DL inference at NVIDIA with TensorRT. Prior to that I got a PhD in GPU algorithms, did a postdoc in Computer Vision and worked at an AI startup. More info can be found at my old personal website.

I write regularly, maintaining both a ✍ tech blog and a ✍ personal blog.

I do 🐦 tweet and share 📷 photos.

Rest of my stuff:

• 📚 Books

  • Caffe2 Quick Start Guide (🛒Buy)
    Packt Publishing (May 31, 2019)

  • Instant GLEW (🛒Buy)
    Packt Publishing (July 25, 2013)

• 📃 Papers

  • Mouse pose estimation from depth images
    Ashwin Nanjappa, Li Cheng, Wei Gao, Chi Xu, Adam Claridge-Chang, Zoe Bichler
    Paper, arXiv

  • GHand: A GPU algorithm for realtime hand pose estimation using depth camera
    Ashwin Nanjappa, Chi Xu, Li Cheng
    Eurographics, 2015
    Paper, Video, DOI

  • Estimate Hand Poses Efficiently from Single Depth Images
    Chi Xu, Ashwin Nanjappa, Xiaowei Zhang, Li Cheng
    International Journal of Computer Vision (IJCV), 2015
    Paper, DOI

  • Real-time hand pose estimation from depth camera using GPU
    Ashwin Nanjappa, Chi Xu, Li Cheng
    GPU Technology Conference 2014 (South East Asia)
    Poster, BibTeX

  • Efficient hand pose estimation from single depth images
    X-periment!, Singapore Science Festival, 2014
    Poster

  • Delaunay mesh generation using the GPU
    Ashwin Nanjappa, Thanh-Tung Cao, Mingcen Gao, Meng Qi, Tiow-Seng Tan, Zhiyong Huang
    Merit Award, NVIDIA Poster Contest, GPU Technology Conference 2014 South East Asia)
    Poster, BibTeX

  • A GPU accelerated algorithm for 3D Delaunay triangulation
    Ashwin Nanjappa, Thanh-Tung Cao, Mingcen Gao, Tiow-Seng Tan
    ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D), 2014
    Paper, Video, Code, BibTeX, DOI

  • gHull: A GPU algorithm for 3D Convex Hull
    Mingcen Gao, Thanh-Tung Cao, Ashwin Nanjappa, Tiow-Seng Tan
    ACM Transactions on Mathematical Software (TOMS), 2013
    Paper, Video, BibTeX, DOI

  • Delaunay triangulation in R³ on the GPU
    PhD Thesis, National University of Singapore, 2012
    Thesis, Code [1, 2], BibTeX

• 🎙️ Talks / Articles

  • Getting the Best Performance on MLPerf Inference 2.0 (2022-04-06)
    NVIDIA Developer Blog

  • GTC Connect with the Experts (2022-03-23)
    Optimize Deep Learning Inference Workloads using NVIDIA TensorRT and Deploying AI Models in Production with NVIDIA Triton Inference Server

  • GTC Connect with the Experts session (2020-03-23)
    NVIDIA TensorRT Applications: Conversational AI, Recommenders, and Object Detection

  • Visual Search as a Cloud Service by Large-Scale Commodity GPU Adoption (2017-03-13)
    SuperComputing Frontiers 2017, Singapore

  • Developer stories - Ashwin Nanjappa from Singapore (2017-02-08)
    Interview by Workshape.io

  • Hand Pose Estimation Demo Booth
    Best Booth Award, A*STAR Scientific Conference (ASC) 2014

• 💾 Code

  • gStar4D
    The gStar4D algorithm computes the 3D Delaunay triangulation on the GPU. The CUDA implementation of gStar4D is robust and achieves a speedup of up to 5 times over the 3D Delaunay triangulator of CGAL.

  • gDel3D
    The gDel3D algorithm constructs the Delaunay Triangulation of a set of points in 3D using the GPU. The algorithm utilizes a novel combination of incremental insertion, flipping and star splaying to construct Delaunay. The CUDA implementation is robust and its runtime is 10 times faster when compared to the Delaunay triangulator of CGAL.

  • gReg3D
    The gReg3D algorithm computes the 3D regular (weighted Delaunay) triangulation on the GPU. Our CUDA implementation of gReg3D is robust and achieves a speedup of up to 4 times over the 3D regular triangulator of CGAL.

  • GPU Coursera
    I created this library of code to work offline on the assignments of Heterogenous Parallel Programming, a GPU/CUDA course offered by Coursera. Many folks chipped in and have converted this into an easy to use library for the course.