Inference Optimization

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Wednesday, 9 September 2026

Lightbits set to release KV cache engine to boost GPU performance

SiliconANGLE 1 month ago 39

Lightbits announced general availability of Inferra, a KV cache engine that shifts key-value cache data off GPU high-bandwidth memory to improve AI inference performance. Lightbits says Inferra can cut time to first token by more than 100-fold on some long-context workloads. Instead of stalling on missing cache and idling GPUs, the system uses predictive prefetching to stage cache blocks in time, enabling larger context windows and more concurrent sessions.

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AI Infrastructure GPU Infrastructure Inference Optimization

What Makes Inference Nondeterministic?

The AI Engineer 1 month ago 18

Inference outputs from the same model and prompt can differ across repeated runs even at temperature 0 because GPU arithmetic order changes with how requests share a batch. Thinking Machines Lab reported that 1,000 identical requests returned 80 different completions. Reproducibility can be improved by turning on batch-invariant kernels in vLLM or SGLang, which typically costs about 38% of throughput.

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AI Infrastructure GPU Infrastructure Model Deployment Inference Optimization

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