Ben Williams

Ben Williams is a senior software engineer at NVIDIA. He is a developer of the NCCL library with an emphasis on GPU-network interactions and system topology. He graduated from Iowa State University with a master’s degree in Computer Engineering in 2017.
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Posts by Ben Williams

Networking / Communications Jul 22, 2025

Understanding NCCL Tuning to Accelerate GPU-to-GPU Communication

The NVIDIA Collective Communications Library (NCCL) is essential for fast GPU-to-GPU communication in AI workloads, using various optimizations and tuning to... 14 MIN READ
Networking / Communications Jun 18, 2025

Improved Performance and Monitoring Capabilities with NVIDIA Collective Communications Library 2.26

The NVIDIA Collective Communications Library (NCCL) implements multi-GPU and multinode communication primitives optimized for NVIDIA GPUs and networking. NCCL... 11 MIN READ
Networking / Communications Mar 13, 2025

Networking Reliability and Observability at Scale with NCCL 2.24

The NVIDIA Collective Communications Library (NCCL) implements multi-GPU and multinode (MGMN) communication primitives optimized for NVIDIA GPUs and networking.... 14 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
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Networking / Communications Sep 16, 2024

Memory Efficiency, Faster Initialization, and Cost Estimation with NVIDIA Collective Communications Library 2.22

For the past few months, the NVIDIA Collective Communications Library (NCCL) developers have been working hard on a set of new library features and bug fixes.... 8 MIN READ