RoadBlock: Rethinking GPU Tensor Core Microarchitecture for Emerging Microscaling Format Support

While multiple recent custom Microscaling (MX) format proposals preserve higher model quality over OCP MX, their hardware evaluations remain confined to standalone MAC-unit prototypes, ignoring the system-level integration overheads inside real GPU Tensor Cores. To this end, we present RoadBlock, an open-source framework for accurate end-to-end modeling of custom MX formats in a programmable Tensor Core, built on the RISC-V Vortex GPGPU. RoadBlock exposes data size, scale-factor size, and block…

Source: arXiv cs.AR (Hardware Architecture), published 2026-11-09. The summary is the Hub's own; the full story is at the source. Report a rights or accuracy concern