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Pangu Pro MoE: Mixture of Grouped Experts for Efficient Sparsity

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arxiv 2505.21411 v2 pith:FBOWBOYJ submitted 2025-05-27 cs.CL

Pangu Pro MoE: Mixture of Grouped Experts for Efficient Sparsity

classification cs.CL
keywords expertsmodelascendpanguinferenceactivateddevicesexecution
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The surgence of Mixture of Experts (MoE) in Large Language Models promises a small price of execution cost for a much larger model parameter count and learning capacity, because only a small fraction of parameters are activated for each input token. However, it is commonly observed that some experts are activated far more often than others, leading to system inefficiency when running the experts on different devices in parallel. Therefore, we introduce Mixture of Grouped Experts (MoGE), which groups the experts during selection and balances the expert workload better than MoE in nature. It constrains tokens to activate an equal number of experts within each predefined expert group. When a model execution is distributed on multiple devices, this architectural design ensures a balanced computational load across devices, significantly enhancing throughput, particularly for the inference phase. Further, we build Pangu Pro MoE on Ascend NPUs, a sparse model based on MoGE with 72 billion total parameters, 16 billion of which are activated for each token. The configuration of Pangu Pro MoE is optimized for Ascend 300I Duo and 800I A2 through extensive system simulation studies. Our experiments indicate that MoGE indeed leads to better expert load balancing and more efficient execution for both model training and inference on Ascend NPUs. The inference performance of Pangu Pro MoE achieves 1148 tokens/s per card and can be further improved to 1528 tokens/s per card by speculative acceleration, outperforming comparable 32B and 72B Dense models. Furthermore, we achieve an excellent cost-to-performance ratio for model inference on Ascend 300I Duo. Our studies show that Ascend NPUs are capable of training Pangu Pro MoE with massive parallelization to make it a leading model within the sub-100B total parameter class, outperforming prominent open-source models like GLM-Z1-32B and Qwen3-32B.

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Forward citations

Cited by 10 Pith papers

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  1. RouteHijack: Routing-Aware Attack on Mixture-of-Experts LLMs

    cs.LG 2026-05 unverdicted novelty 7.0

    RouteHijack is a routing-aware jailbreak that identifies safety-critical experts via activation contrast and optimizes suffixes to suppress them, reaching 69.3% average attack success rate on seven MoE LLMs with stron...

  2. Complete-muE: Optimal Hyperparameter Transfer and Scaling for MoE Models

    cs.LG 2026-05 unverdicted novelty 6.0

    Complete-muE combines active-width μP and activated-expert scaling to transfer hyperparameters across dense FFN, dense MoE, and sparse MoE while covering changes in experts, capacity, width, depth, batch size, and duration.

  3. NASiC: 3D NAND-based CAM-Selected Multibit CIM Architecture for Efficient On-Device Mixture-of-Experts LLM Inference

    cs.AR 2026-05 unverdicted novelty 6.0

    NASiC fuses CAM-based expert selection and multibit CIM computation in 3D NAND into one cycle for MoE LLM inference, claiming 4-114.8x performance and 3.9-70x energy efficiency gains over prior designs with high accuracy.

  4. SCOPE and SCION: A Benchmark and an Auditable Reference Pipeline for Schema Induction and Fusion from Text

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    A 24-dataset benchmark for inducing schema graphs from raw text, plus an auditable LLM-based pipeline that reports the highest scores on the benchmark's four schema-similarity metrics.

  5. Hierarchical Mixture-of-Experts with Two-Stage Optimization

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    Hi-MoE uses two-level hierarchical routing objectives to enforce group-level balance while promoting within-group specialization, yielding better perplexity and expert utilization than prior MoE baselines in NLP and v...

  6. Adaptive Inverted-Index Routing for Granular Mixtures-of-Experts

    cs.LG 2026-05 unverdicted novelty 6.0

    AIR-MoE introduces a two-stage inverted-index routing method based on vector quantization that approximates optimal expert selection for granular MoE models at lower cost and with empirical performance gains.

  7. SMoES: Soft Modality-Guided Expert Specialization in MoE-VLMs

    cs.CV 2026-04 unverdicted novelty 6.0

    SMoES improves MoE-VLM performance and efficiency via soft modality-guided expert routing and inter-bin mutual information regularization, yielding 0.9-4.2% task gains and 56% communication reduction.

  8. Intrinsic Fingerprint of LLMs: Continue Training is NOT All You Need to Steal A Model!

    cs.CR 2025-07 unverdicted novelty 6.0

    Standard deviation distributions of attention matrices in LLMs remain distinctive and stable after continued training, enabling fingerprinting to trace model lineage and detect potential plagiarism such as in Pangu Pro MoE.

  9. Spectral Signatures of Large Language Models

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    Layer-wise PL_Alpha_Hill spectral shapes of LLM weight matrices form a robust, data-free signature that tracks lineage, clusters families, and proxies broad performance.

  10. Rethinking the Role of Tensor Decompositions in Post-Training LLM Compression

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