Justin Luitjens

Justin Luitjens is a senior developer technology manager at NVIDIA where he works on accelerating applications on GPUs. He holds a Ph.D in scientific computing from the University of Utah.
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Posts by Justin Luitjens

Technical Walkthrough 2

Speeding up Numerical Computing in C++ with a Python-like Syntax in NVIDIA MatX

Rob Smallshire once said, "You can write faster code in C++, but write code faster in Python." Since its release more than a decade ago, CUDA has given C and... 6 MIN READ
Extracting Features from Multiple Audio Channels with Kaldi
Technical Walkthrough 0

Extracting Features from Multiple Audio Channels with Kaldi

In automatic speech recognition (ASR), one widely used method combines traditional machine learning with deep learning. In ASR flows of this type, audio... 13 MIN READ
Technical Walkthrough 1

GPU-Accelerated Speech to Text with Kaldi: A Tutorial on Getting Started

Sign up for the latest Speech AI news from NVIDIA. Recently, NVIDIA achieved GPU-accelerated speech-to-text inference with exciting performance results. That... 12 MIN READ
Technical Walkthrough 1

NVIDIA Accelerates Real Time Speech to Text Transcription 3500x with Kaldi

Think of a sentence and repeat it aloud three times. If someone recorded this speech and performed a point-by-point comparison, they would find that no single... 8 MIN READ
GPU Pro Tip
Technical Walkthrough 1

CUDA Pro Tip: Always Set the Current Device to Avoid Multithreading Bugs

We often say that to reach high performance on GPUs you should expose as much parallelism in your code as possible, and we don't mean just parallelism... 3 MIN READ
Technical Walkthrough 1

Faster Parallel Reductions on Kepler

Parallel reduction is a common building block for many parallel algorithms. A presentation from 2007 by Mark Harris provided a detailed strategy for... 12 MIN READ