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Brief · 9 June 2026

What changed

NVIDIA added support for the new NVFP4 numeric format on Blackwell GPUs, letting JAX‑MaxText pipelines run up to 1.8× faster, and the Linux 7.2 kernel now includes ACPI CPPC v4 code contributed by an NVIDIA engineer, easing power‑management integration for Blackwell servers. [source]

One number

1.8×

Training throughput boost reported for JAX + MaxText on Blackwell with NVFP4

source ↗

Still vapor

NVIDIA’s press release claims NVFP4 will “double performance across all AI workloads.” The benchmark only shows a 1.8× gain on a specific JAX‑MaxText pre‑training task; other kernels and inference workloads have not demonstrated a 2× uplift.

The most concrete shift today comes from NVIDIA’s Blackwell platform. By exposing the NVFP4 format—a 4‑bit floating‑point variant tuned for deep‑learning kernels—the company showed a JAX + MaxText pre‑training run that hit 1.8× higher throughput than the same model on standard BF16. The blog post walks through the changes to the CUDA kernel library and the MaxText code path, noting that the speedup appears without any loss in convergence quality. For operators, the implication is a modest but immediate reduction in GPU‑hours for large‑scale language‑model training, especially when the workload already fits the NVFP4 precision envelope.

At the same time, the Linux 7.2 kernel landed ACPI CPPC v4 support, a power‑policy interface authored by an NVIDIA engineer. CPPC v4 lets data‑center managers expose fine‑grained performance states to orchestration software, potentially smoothing the power‑budget trade‑offs that Blackwell’s higher‑density GPUs demand. While the kernel patch is still a few weeks from a wide‑scale rollout, early testing shows smoother scaling under mixed‑precision loads.

Operators should verify NVFP4 compatibility in their own stacks before committing to Blackwell purchases, and watch for downstream driver updates that fully expose the CPPC v4 interface in popular container runtimes.

Composed by the MadCoolStuff editor pipeline · Groq · openai/gpt-oss-120b · 2026-06-09

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