Posts by Barsoum Emad
DP Attention and TBO for DeepSeek-V4 on MI355X
- 24 June 2026
Running DeepSeek-V4 efficiently requires solving two intertwined problems: how to parallelize MoE communication across GPUs, and how to hide that communication behind useful compute. The dominant approach is Expert Parallel with all2all backends like DeepEP. This solves both problems, but it also requires specialized kernels, topology assumptions, and careful expert placement.
ATOMesh: Unlocking AMD Hardware for Scalable LLM Serving
- 16 June 2026
Large language model serving is moving from single-engine optimization to full-stack distributed inference. Production deployments must handle high concurrency, long-context prefill, latency-sensitive decode, KV cache store pressure, and multi-node GPU utilization at the same time. On AMD Instinct GPUs, the key opportunity is to connect ROCm-native kernels, communication libraries, inference engines, and distributed orchestration into one scalable serving stack.
ATOM: Unlocking Extreme AMD Instinct Inference with Software-Hardware Co-Optimization
- 15 June 2026
As LLM serving enters a phase defined by high concurrency, long-context workloads, sparse MoE activation, and multi-GPU deployment, the challenge is no longer basic functionality but sustaining peak efficiency on AMD GPUs under production-scale load. ATOM (AiTer Optimized Model) is built for that goal, following four core principles: system-level optimization for LLM inference on AMD Instinct™ GPUs, kernel-level acceleration through AITER, distributed inference scaling with MORI, and a rollout-engine path for RL workloads. It builds on earlier ROCm blog coverage of AITER and vLLM-ATOM, moving from kernel and plugin acceleration into the standalone ATOM inference engine. Rather than being a generic framework adapted to the ROCm™ software, ATOM is an execution engine designed with ROCm-first priorities, AITER-native operators, and deep optimization on the inference-critical path. Aligned with the AMD Instinct roadmap from single-node optimization to multi-node scale-out, ATOM evolves its architecture, kernel strategy, and distributed execution model in lockstep with each hardware generation.
Out-of-the-Box ROLL Support on AMD GPUs: Accelerating Reinforcement Learning at Scale
- 01 June 2026
Reinforcement learning (RL) is rapidly becoming a foundational technology for Large Language Models (LLMs)—powering key abilities such as reasoning and agentic behaviors. As RL workloads grow more complex and computationally intensive, the ecosystem increasingly depends on scalable, high-performance frameworks that can fully utilize modern GPU clusters.