ModelExpress: Distributing Model Artifacts at the Speed of Light
NVIDIA ModelExpress accelerates multi-hundred-GB model weight distribution across GPU clusters
“Every byte moved has a cost. As model checkpoints grow to hundreds of gigabytes or even a terabyte, that cost adds up quickly.”
NVIDIA introduces ModelExpress, a system for efficiently distributing large model artifacts across GPU clusters, addressing the growing cost of moving multi-hundred-GB checkpoints during cold starts, autoscaling, and RL post-training. As models scale to terabyte-range weights, distribution bottlenecks become a critical infrastructure problem. This is a practical engineering signal for teams running large-scale model serving or training infrastructure.