yl9193永利官网系列讲座菁英论坛第25期----The Demikernel Datapath Architecture for Microsecond-scale Datacenter Systems

报告题目(Title)：The Demikernel Datapath Architecture for Microsecond-scale Datacenter Systems

时间 (Date & Time)：2024.04.02 13:00 -14:00pm

地点 (Location)：yl9193永利官网第二教学楼211（燕园校区）

主讲人 (Speaker)：Irene Zhang (Microsoft Research Redmond)

邀请人 (Host)：Chenren Xu

报告视频会议 (Zoom Link)：ID 818 4601 2818, Password 289313

报告摘要 (Abstract)：

Datacenter systems and I/O devices now run at single-digit microsecond latencies, requiring nanosecond-scale operating systems. Traditional kernel-based operating systems impose an unaffordable overhead, so recent kernel-bypass OSes (e.g., Arrakis, Ix) and libraries (e.g., Caladan, eRPC) eliminate the OS kernel from the I/O datapath. However, these systems do not offer a general-purpose datapath OS replacement that meet the needs of microsecond-scale systems.  As a result, while kernel-bypass hardware is widely available in the datacenter, it is not widely used.

This talk summarizes Demikernel, a flexible datapath OS and architecture designed for heterogenous kernel-bypass devices and microsecond-scale datacenter systems. Demikernel supports a variety of kernel-bypass hardware, including DPDK, RDMA, as well as software bypass solutions like io_uring. To support microsecond-scale operation, Demikernel includes a new nanosecond-scale TCP stack, written in Rust and proposes new memory management, CPU scheduling and network abstractions. Demikernel is currently used by Bing and will go into production with Azure services later this year.

主讲人简介(Bio)：

Irene Zhang is a Principal Researcher at Microsoft Research. Her work focuses on datacenter operating systems and distributed systems, especially making new datacenter hardware technologies more widely usable by highly-demanding datacenter applications. Irene completed her PhD in 2017 at the University of Washington, where her PhD thesis focused on distributed systems that span mobile devices and cloud servers. Her thesis work received the ACM SIGOPS Dennis Ritchie doctoral dissertation award and the UW Allen School William Chan Memorial dissertation award. Before her PhD, Irene was a member of the virtual machine monitor group at VMware, where she worked on memory resource management and virtual machine checkpointing.

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