Architecture Overview

A GASNet-style runtime decomposes into control and data paths that span both software and hardware.

Data plane

• Remote memory access (put/get) operations
• Bulk transfer pipeline (staging, zero-copy, RDMA)
• Completion queues and progress engine

Control plane

• Endpoint discovery and bootstrap
• Active message dispatch
• Collectives setup and teardown

Performance risk areas

• NUMA placement mismatches
• Interrupt moderation and CQ polling cadence
• Message coalescing vs. head-of-line blocking