Penny Xu

Blog

  1. How GPUs Talk to Each Other

    2026-10-14

    • LLM
    • inference
    • tensor parallelism
    • NCCL
  2. PagedAttention, Visualized

    2026-10-05

    • LLM
    • inference
    • vLLM
    • KV cache
  3. Big Debt Crisis Analysis

    2020-04-20

    • random
  4. Convolution is Matrix Multiplication

    2019-11-18

    • neural network
    • deep learning
    • parallelism
    • convolution
  5. Parallel Deep Learning

    2019-10-20

    • neural network
    • deep learning
    • parallelism
    • GPU
  6. When to use GPU for training?

    2019-09-04

    • PyTorch
    • CUDA
    • GPU
  7. PyTorch Autograd Computation Graph

    2019-08-30

    • PyTorch
    • deep learning
    • neural networks
  8. Tiled Matrix Multiplication

    2019-08-24

    • deep learning
    • matrix multiplication
    • CUDA
    • GPU
  9. Mathematical Morphology Visualized

    2019-08-14

    • computer vision
    • image analysis
  10. Finding eigenvalues proof explained

    2019-07-26

    • eigenvector
    • eigenvalue
  11. Generalized Hough Transform

    2019-07-01

    • Hough Transform
    • computer vision
    • image analysis
  12. Linear to Fully Convolutional Networks

    2019-06-19

    • deep learning
    • convolution
    • neural networks
  13. Matrix Multiplication is Parallel

    2019-06-17

    • deep learning
    • matrix multiplication
    • parallelism
  14. Probabilistic Classifier

    2019-06-12

    • machine learning
    • image analysis
    • classification
    • probability
  15. Image Restoration

    2019-06-10

    • image analysis
    • restoration filter
  16. Do you even know cross entropy?

    2019-06-01

    • cross entropy
    • entropy
    • machine learning
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