FlashRT is presented, an agent harness that guides coding agents to lift simple developer-written reference implementations into optimized multi-GPU deployments that flexibly weigh target metrics like latency and throughput, demonstrating that agent-driven optimization can be more scalable on platforms with less mature expert optimization.
Abstract
Real-time multimodal applications, including voice agents and interactive video generation, compose heterogeneous models into pipelines whose efficient deployment requires application-specific decisions about placement, streaming, and intra-model parallelism. Existing serving systems and auto-parallelism compilers commit to limited transformations and fixed workload assumptions, so achieving high performance on a new application requires hand-crafting an efficient implementation. We present FlashRT, an agent harness that guides coding agents to lift simple developer-written reference implementations into optimized multi-GPU deployments that flexibly weigh target metrics like latency and throughput. Using a new chain-of-program paradigm, FlashRT directs a generic coding agent through a multi-pass transformation process where an agent transforms the reference into an intermediate representation (IR) to capture data dependencies and persistent-state scopes, validates this IR via a sequential interpreter, and performs static analyses to identify candidate transformations. Then, the agent iteratively implements, verifies, and benchmarks each candidate under a measurement-gated optimization loop to produce effective deployments that span different hardware budgets. Across various applications, including video world models and multimodal LLMs, FlashRT converts reference implementations into highly efficient deployments, delivering up to ~70x latency reduction and 2.8x throughput improvement on NVIDIA B200 GPUs. On AMD MI355X GPUs, FlashRT matches the peak latency reduction while increasing peak throughput improvement to 3.6x, demonstrating that agent-driven optimization can be more scalable on platforms with less mature expert optimization. In fact, for Qwen3-Omni text-to-audio inference, FlashRT reduces response latency by 65% compared to the expert vLLM-Omni implementation on AMD MI355X.
Large Language Model (LLM) applications increasingly rely on multi-agent and retrieval-augmented generation (RAG) architectures to solve complex, knowledge-intensive tasks. However, when deployed as generic platforms serving multiple customers and heterogeneous user groups, existing systems often rely on agent-level routing and prompt hardcoding, leading to poor modularity, limited reuse, and weak controllability. In particular, current approaches lack an explicit abstraction for modeling system capabilities and controlling which capabilities are accessible to different users. We propose an expert-guided multi-agent architecture that separates execution from capability modeling. Agents are responsible for LLM interaction and tool execution, while experts represent indivisible business or task capabilities and guide agent orchestration through dynamic prompt injection. This design enables a generic, multi-instance system in which different customer deployments and user groups share the same agent implementations while exposing different capability sets at the business level. The architecture enforces strong guarantees in terms of answerability, traceability, and controllability. A first working implementation has been developed, and an open-source release is currently in preparation.
Ying Zhang, M. Guillaume, Edouard Leleux et al.· 2026 6th International Confe...· 0 citations
Integrated sensing and communications (ISAC) is moving from proof-of-concept demonstrations to system-level deployment in sixth-generation (6G) networks. Because sensing and communication share hardware, spectrum, and waveform resources, ISAC design now involves many tightly coupled choices, including waveform selection, sensing algorithm setup, resource scheduling, and deployment planning. This design space is already too large to manage well through manual tuning or isolated optimizers. This article introduces the \textit{Agent Compiler}, a large language model (LLM)-enabled compilation layer that translates high-level engineering intent into complete and executable ISAC system configurations. The Agent Compiler works in four stages: intent parsing, task decomposition, policy graph synthesis, and infrastructure mapping. It produces a verifiable intermediate representation called the ISAC Policy Graph (IPG). A runtime engine then deploys the compiled configuration and supports closed-loop adaptation at three levels: fast parameter updates, partial recompilation of affected subgraphs, and full workflow recompilation. The core design principle is strict time-scale separation: the LLM handles slow-loop strategic decisions, while proven algorithms retain real-time control in the fast loop. A UAV-assisted disaster rescue example illustrates the full compilation process. We also discuss open issues, including compilation latency, output reliability, constraint verification, and pipeline security, to guide future research.
Lijie Zheng, Xudong Zhong, Baoquan Ren et al.· 0 citations
CAKE, a compiler-agent co-design in which agents author CAKE IR, a typed, hardware-explicit schedule representation, exposes warp roles, memory movement, synchronization, and pipelines while supporting verification, cost modeling, and localized diagnostics.
Zihao Ye, Yingyi Huang, H. Jin et al.· 0 citations
A code agent-agnostic agentic scaffold for automated code performance optimization that enables the system to autonomously execute the entire pipeline: project-level runtime analysis, hotspot identification and benchmark extraction, Abstract Syntax Tree (AST)-precise code localization, candidate patch generation, functional verification, performance measurement, and version rollback.
Results show that parallel execution can improve both success rate and efficiency on decomposable, long-horizon GUI tasks, pointing to a direction worth further study.
Zedong Yu, Qian-Xing Li, Zhi Gao et al.· 0 citations
ToFu is presented, an agentic harness for researchers that reads your codebase, edits files, runs commands, and integrates with your development tools and provides a white-box agentic harness that allows researchers to inspect, modify, and evaluate its orchestration logic, tool-use behavior, and harness design.
