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Physix Frontier · News Briefing Card (IT Home · Nov 5, 2026)

NVIDIA Releases CUDA Toolkit 13.5, Officially Supports Vera Rubin

KEY FACTS

  • NVIDIA released CUDA Toolkit 13.5 on November 4, providing generally available support for the Vera Rubin platform.
  • The new version optimizes NVFP4 and MXFP8 low-precision matrix operations, covering training scenarios such as MoE.
  • MPS v3 adds a weighted time-slice mechanism and SM partition load balancing.
  • CUDA Tile supports direct access to other GPUs' memory from within a kernel, enabled via NVLink.
  • Starting with the Rubin architecture, CUDA on Windows no longer supports TCC mode, offering only WDDM and MCDM.

KEY DATA

13.5CUDA Toolkit version
620.70.06Linux data center driver version
621.14Windows data center driver version
3.5CCCL version

PHYSIX OBSERVATION

Vera Rubin moves from preview to general availability, with the software stack paving the way ahead of the hardware. MPS v3 and cross-GPU memory access directly target resource utilization and communication overhead in large-scale training, but dropping TCC on Windows and decoupling drivers from the Toolkit mean enterprises must re-adapt their deployments, raising operational costs in the near term.

Source: IT Home report

NVIDIA Releases CUDA Toolkit 13.5, Officially Supports Vera Rubin | Physix Frontier Briefing