[KongchangAI]
ConceptMicroscaling FP4 / MX Float 4

MXFP4

A microscaling floating-point quantization format defined by the Open Compute Project (OCP) that compresses each model parameter to 4 bits. It maintains numerical precision at low bit-widths through intra-group shared scaling factors, and is used to reduce cost and improve efficiency in large-model inference workloads.

Timeline (last 90 days)

Oct 11

The solution uses BF16 precision uniformly for the KV cache, and MXFP4 quantization for the model weights.

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Sep 24

In the DeepSeek R1 670B (MXFP4 precision) test, Jalapeño achieved approximately 1.7× throughput per watt (19,641 vs. GB300's 11,781), and end-to-end latency was reduced from 5.99 seconds to 1.65 seconds.

Unverified60%
Sep 17

MXFP4 belongs to the MX (Microscaling) series of standards and is a block floating-point quantization specification in which a group of weights shares a single scaling factor.

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Sep 17

This optimization focuses on the vLLM inference framework and the MXFP4/NVFP4 quantization paths, involving writing or adjusting dedicated compute kernels.

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