John Hubbard

John Hubbard is a distinguished engineer at NVIDIA, specializing in Linux kernel development, open source software, and CUDA. He has worked at NVIDIA since just after the CUDA 1.0 release in 2007. Before that, he served eight years as an unrestricted line officer in the U.S. Navy submarine force, culminating in a tour as combat systems officer ("Weps") of the USS Bluefish (SSN 675).
John Hubbard

Posts by John Hubbard

Data Center / Cloud Oct 14, 2025

Understanding Memory Management on Hardware-Coherent Platforms

If you're an application developer or a cluster administrator, you’ve likely seen how non-uniform memory access (NUMA) can impact system performance. When an... 6 MIN READ
Simulation / Modeling / Design Aug 22, 2023

Simplifying GPU Application Development with Heterogeneous Memory Management

Heterogeneous Memory Management (HMM) is a CUDA memory management feature that extends the simplicity and productivity of the CUDA Unified Memory programming... 16 MIN READ