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arxiv: 2605.02965 · v1 · submitted 2026-05-03 · 💻 cs.LG · cs.SY· eess.SP· eess.SY· stat.ML

Joint Energy Management and Coordinated AIGC Workload Scheduling for Distributed Data Centers: A Diffusion-Aided Reward Shaping Approach

Pith reviewed 2026-05-10 15:13 UTC · model grok-4.3

classification 💻 cs.LG cs.SYeess.SPeess.SYstat.ML
keywords AIGCdata center schedulingenergy managementdiffusion modelreward shapingdeep reinforcement learningsparse rewardsworkload optimization
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The pith

A diffusion model synthesizes reward signals to enable effective reinforcement learning for AIGC workload scheduling and energy management in distributed data centers.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper seeks to jointly optimize energy consumption and the scheduling of artificial intelligence-generated content workloads across distributed data centers. It introduces an explicit model of service quality to facilitate workload transfers between providers and fine control over inference steps while incorporating multiple energy sources. A major obstacle is the severe sparsity of rewards caused by the strong interdependencies in scheduling choices, which hampers conventional deep reinforcement learning. The proposed solution trains a diffusion model to create supplementary reward signals by reversing a noise addition process over multiple steps and incorporates this into the reinforcement learning framework. Experiments using actual AIGC models and datasets confirm that the method adapts well to varying electricity prices and model differences while delivering higher overall utility.

Core claim

The authors claim that by integrating a diffusion model to shape rewards through a multi-step denoising process with deep reinforcement learning, it becomes possible to learn effective policies for joint energy management and coordinated AIGC workload scheduling despite the reward sparsity induced by coupled decisions on job transfers and inference configurations.

What carries the argument

Diffusion model-aided reward shaping that generates complementary reward signals via multi-step denoising to support DRL under sparse feedback.

If this is right

  • Effective handling of electricity price variations and AIGC model heterogeneity across providers.
  • Improved convergence of the learning process for scheduling policies.
  • Higher achieved system utility balancing service revenue against costs and penalties.
  • Greater flexibility in utilizing diverse energy resources in the data centers.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • This reward shaping technique could be tested in other domains involving complex interdependent decisions, such as cloud resource allocation or smart grid management.
  • Further experiments could examine whether the diffusion model requires retraining for new AIGC models or if it generalizes across different content generation tasks.
  • Combining the approach with other techniques like hierarchical reinforcement learning might address even larger scale distributed systems.

Load-bearing premise

The diffusion model can consistently generate meaningful and non-misleading reward signals that help overcome the sparsity without distorting the optimization objective.

What would settle it

Conducting experiments where the DRL agent is trained solely with the original sparse rewards on identical real-world AIGC models and datasets, and finding comparable or superior performance in convergence and utility, would indicate that the diffusion-aided shaping is not necessary.

Figures

Figures reproduced from arXiv: 2605.02965 by Hao Yu, Liming Chen, Peng Qin, Yang Fu, Yifei Wang, Zihao Zhang.

Figure 1
Figure 1. Figure 1: Joint energy management and AIGC workload scheduling framework [PITH_FULL_IMAGE:figures/full_fig_p003_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: Illustrations of AIGC service revenue. ≤ min {Dmax n , En (t)/τ} , ∀n, t, (9) where Emax n signifies the capacity of BESS, Dmax n > 0 and Dmin n > 0 are the maximum discharging and charging power, respectively. Accordingly, the electric power balance is represented as P G n (t) + P C n (t) = Dn (t) + Rn (t) + Gn (t), ∀n, t, (10) where Rn (t) denotes the renewable power generated at ASP n. Gn (t) indicates … view at source ↗
Figure 3
Figure 3. Figure 3: Diffusion model-aided reward shaping and its integration with soft [PITH_FULL_IMAGE:figures/full_fig_p007_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: Total numbers of denoising steps executed at ASPs. [PITH_FULL_IMAGE:figures/full_fig_p010_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: Energy management results of ASPs. job transferring toward lower-price locations and adaptive denoising step configuration, enabling flexible responses to electricity price fluctuations. Meanwhile, workload scheduling is influenced by the AIGC models deployed at the destination ASPs. Specifically, jobs processed at ASP 1 are typically assigned larger denoising step configurations, whereas those at ASPs 2 a… view at source ↗
Figure 6
Figure 6. Figure 6: A snapshot of ASP 2’s job scheduling decisions during 23:00-24:00. [PITH_FULL_IMAGE:figures/full_fig_p010_6.png] view at source ↗
Figure 7
Figure 7. Figure 7: Learning curves of various DRL schemes. service revenue for delay-tolerant jobs [PITH_FULL_IMAGE:figures/full_fig_p010_7.png] view at source ↗
Figure 8
Figure 8. Figure 8: Learning curves of various reward shaping settings. [PITH_FULL_IMAGE:figures/full_fig_p011_8.png] view at source ↗
Figure 9
Figure 9. Figure 9: Comparison with reward pre￾diction networks and cGAN model. 0 50 100 150 200 250 300 350 400 450 500 550 Training episode -200 -100 0 100 200 300 400 500 600 700 Environmental reward W=3, M=128 W=5, M=128 W=7, M=128 W=3, M=64 W=3, M=256 Without state-action conditioning [PITH_FULL_IMAGE:figures/full_fig_p011_9.png] view at source ↗
Figure 11
Figure 11. Figure 11: System utility versus job arrival scale. 75 100 125 150 175 Job average tolerated delay 1 1.5 2 2.5 3 System utility 104 JEMAS, proposed Diffusion-aided TD3 Without job transfer Fixed step configuration Without GPU DVFS Without renewable power [PITH_FULL_IMAGE:figures/full_fig_p012_11.png] view at source ↗
Figure 15
Figure 15. Figure 15: System utility versus job transferable ratio. 2 3 4 5 6 7 8 9 10 Number of edge nodes 13.4 13.6 13.8 14 14.2 14.4 14.6 14.8 Average energy cost ($) 0 2 4 6 8 10 12 Average stored energy of BESS (MWh) Average energy cost Average stored energy of BESS [PITH_FULL_IMAGE:figures/full_fig_p012_15.png] view at source ↗
Figure 17
Figure 17. Figure 17: Scheduling decisions and generation results of various methods for [PITH_FULL_IMAGE:figures/full_fig_p012_17.png] view at source ↗
read the original abstract

Artificial intelligence-generated content (AIGC) has emerged as a transformative paradigm for automating the creation of diverse and customized content, giving rise to rapidly growing computational workloads in cloud data centers. It is imperative for AIGC service providers (ASPs) to strategically schedule AIGC workloads to reduce data center energy costs while guaranteeing high-quality content generation. However, the distinctive characteristics of AIGC services pose critical challenges, including model heterogeneity across ASPs, implicit service quality evaluation, and complex inference process control. To tackle these challenges, we propose a joint energy management and coordinated AIGC workload scheduling framework, which introduces an explicit mathematical characterization of service quality to promote both job transfer among ASPs and fine-grained inference process configuration. Moreover, various energy resources within data centers are jointly considered to enhance power usage flexibility. Subsequently, a system utility maximization problem is formulated to balance AIGC service revenue with operational penalties and costs. Nevertheless, the strong coupling among job scheduling decisions induces severe reward sparsity, which limits the effectiveness of existing deep reinforcement learning (DRL) algorithms. To address this issue, we develop a diffusion model-aided reward shaping approach to synthesize complementary reward signals through a multi-step denoising process. This approach is seamlessly integrated with DRL to enable efficient learning of scheduling policies under sparse environmental feedback. Experiments based on real-world models and datasets demonstrate that our scheme effectively accommodates electricity price fluctuations and AIGC model heterogeneity, while achieving superior learning convergence and system utility compared with benchmark methods.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The paper proposes a joint energy management and coordinated AIGC workload scheduling framework for distributed data centers. It provides an explicit mathematical characterization of service quality to enable job transfer and inference configuration, jointly models various energy resources, and formulates a system utility maximization problem balancing revenue against energy costs and penalties. To address severe reward sparsity induced by coupled scheduling decisions in DRL, it introduces a diffusion model-aided reward shaping method that synthesizes complementary signals via multi-step denoising, which is integrated with DRL for policy learning. Experiments on real-world models and datasets are claimed to show effective accommodation of electricity price fluctuations and model heterogeneity, along with superior convergence and utility versus benchmarks.

Significance. If the diffusion-based shaping is validated to provide policy-preserving or unbiased signals, the work could advance DRL applications to resource allocation in emerging AIGC services by offering a practical technique for sparse-reward MDPs with coupled decisions. The explicit service-quality modeling and joint energy-resource consideration represent concrete engineering contributions that align with real data-center operations. The approach's novelty in applying diffusion models to reward synthesis for this domain is a potential strength, though its load-bearing role requires clearer isolation.

major comments (2)
  1. [Diffusion model-aided reward shaping] The diffusion model-aided reward shaping approach (described after the problem formulation): the claim that multi-step denoising synthesizes complementary signals to overcome sparsity lacks any derivation showing that the resulting rewards are consistent with the original MDP's optimality (e.g., via potential-based shaping that preserves the optimal policy) or that they avoid systematic bias in long-term value estimates for revenue minus energy/penalty costs. This is central to the contribution and must be addressed with a proof sketch or formal argument.
  2. [Experiments] Experiments section (and abstract claims): no ablation is reported that isolates the diffusion component from other modeling choices such as the explicit service-quality characterization or the joint energy-resource model. Without this, end-to-end superiority on real-world traces cannot establish whether the denoising step is load-bearing or merely correlated with other improvements.
minor comments (2)
  1. [Abstract] The abstract would be strengthened by including at least one key quantitative metric (e.g., percentage improvement in utility or convergence speed) with error bars to support the superiority claim.
  2. [System Model] Notation for AIGC model heterogeneity, job-transfer decisions, and shaped reward components should be introduced with a dedicated table or consistent definitions early in the system model to improve readability.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the constructive and detailed feedback. We address each major comment point by point below, outlining the revisions we will incorporate to strengthen the theoretical grounding and experimental validation of the diffusion-aided reward shaping approach.

read point-by-point responses
  1. Referee: [Diffusion model-aided reward shaping] The diffusion model-aided reward shaping approach (described after the problem formulation): the claim that multi-step denoising synthesizes complementary signals to overcome sparsity lacks any derivation showing that the resulting rewards are consistent with the original MDP's optimality (e.g., via potential-based shaping that preserves the optimal policy) or that they avoid systematic bias in long-term value estimates for revenue minus energy/penalty costs. This is central to the contribution and must be addressed with a proof sketch or formal argument.

    Authors: We agree that the current manuscript lacks a formal derivation establishing policy preservation or bias analysis for the shaped rewards. While the diffusion process is designed to generate signals consistent with the original reward distribution, we will add a new subsection with a proof sketch. This will frame the multi-step denoising as a potential-based shaping function (extending Ng et al.'s framework) under the assumption that the learned diffusion model approximates the true reward measure, thereby preserving the optimal policy. We will also include a bias-variance analysis for the long-term value estimates and discuss conditions under which systematic bias is avoided, supported by additional theoretical arguments. revision: yes

  2. Referee: [Experiments] Experiments section (and abstract claims): no ablation is reported that isolates the diffusion component from other modeling choices such as the explicit service-quality characterization or the joint energy-resource model. Without this, end-to-end superiority on real-world traces cannot establish whether the denoising step is load-bearing or merely correlated with other improvements.

    Authors: We concur that isolating the diffusion component is essential for validating its load-bearing role. In the revised manuscript, we will add a dedicated ablation study in the Experiments section. This will compare the full proposed framework against a variant that retains the explicit service-quality characterization and joint energy-resource modeling but replaces the diffusion-aided shaping with standard sparse-reward DRL (e.g., vanilla DQN or PPO). Results on the same real-world traces will quantify the incremental gains in convergence speed and system utility attributable to the denoising process. revision: yes

Circularity Check

0 steps flagged

No significant circularity; derivation is self-contained algorithmic proposal

full rationale

The paper introduces a joint optimization framework for AIGC scheduling and energy management, then proposes a diffusion model-based reward shaping technique as an independent algorithmic addition to DRL to mitigate reward sparsity. No load-bearing step reduces the claimed performance gain or shaped reward to a fitted parameter, self-citation chain, or definitional equivalence with the input MDP; the denoising process is presented as a novel synthesis method rather than a renaming or self-referential fit. The central utility maximization and scheduling decisions remain externally motivated by the problem characteristics, with experiments on real-world traces serving as validation rather than circular confirmation.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract-only review; no explicit free parameters, axioms, or invented entities are stated. The diffusion model and DRL components are treated as standard tools rather than newly postulated.

pith-pipeline@v0.9.0 · 5605 in / 1040 out tokens · 46234 ms · 2026-05-10T15:13:20.325107+00:00 · methodology

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