Thomas Gillis

Thomas Gillis is a senior software engineer at NVIDIA. He contributes to the NCCL library with a focus on initialization and network communication. He graduated from UCLouvain (Belgium) with an PhD in Mechanical Engineering in 2019, and a master’s degree in Applied Mathematics in 2015. Thomas previously held postdoctoral research positions at the Massachusetts Institute of Technology (MIT) and the Argonne National Laboratory.
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Posts by Thomas Gillis

Data Center / Cloud Jul 14, 2025

Enabling Fast Inference and Resilient Training with NCCL 2.27

As AI workloads scale, fast and reliable GPU communication becomes vital, not just for training, but increasingly for inference at scale. The NVIDIA Collective... 9 MIN READ
Networking / Communications Jul 14, 2025

NCCL Deep Dive: Cross Data Center Communication and Network Topology Awareness

As the scale of AI training increases, a single data center (DC) is not sufficient to deliver the required computational power. Most recent approaches to... 9 MIN READ
Networking / Communications Jan 31, 2025

New Scaling Algorithm and Initialization with NVIDIA Collective Communications Library 2.23

The NVIDIA Collective Communications Library (NCCL) implements multi-GPU and multinode communication primitives optimized for NVIDIA GPUs and networking. NCCL... 9 MIN READ