一句话:提出 AvA,为 GPU/TPU/FPGA 等加速器提供加速虚拟化,使云中多个 guest 可共享物理设备,恢复多租户与整合。
云计算应用大规模迁移到云端,而 GPU、TPU、FPGA 等加速器在后摩尔定律时代不断普及。二者存在冲突:云应用运行在虚拟化平台上,但现有虚拟化技术尚未为加速器提供生产可用的方案。云提供商因此通常将物理加速器设备独占分配给单个 guest,导致多租户与资源整合能力丧失。AvA 提出面向加速器的加速虚拟化(accelerated virtualization of accelerators),旨在让多个 guest 共享加速器,从而在云环境中恢复多租户和 consolidation。摘要未披露具体实现机制与实验评估结果。
Applications are migrating en masse to the cloud, while accelerators such as GPUs, TPUs, and FPGAs proliferate in the wake of Moore's Law. These trends are in conflict: cloud applications run on virtual platforms, but existing virtualization techniques have not provided production-ready solutions for accelerators. As a result, cloud providers expose accelerators by dedicating physical devices to individual guests. Multi-tenancy and consolidation are lost as a consequence.