FreeFlow: Software-based Virtual RDMA Networking for Containerized Clouds

Authors: 

Daehyeok Kim and Tianlong Yu, Carnegie Mellon University; Hongqiang Harry Liu, Alibaba; Yibo Zhu, Microsoft and Bytedance; Jitu Padhye and Shachar Raindel, Microsoft; Chuanxiong Guo, Bytedance; Vyas Sekar and Srinivasan Seshan, Carnegie Mellon University

Abstract: 

Many popular large-scale cloud applications are increasingly using containerization for high resource efficiency and lightweight isolation. In parallel, many data-intensive applications (e.g., data analytics and deep learning frameworks) are adopting or looking to adopt RDMA for high networking performance. Industry trends suggest that these two approaches are on an inevitable collision course. In this paper, we present FreeFlow, a software-based RDMA virtualization framework designed for containerized clouds. FreeFlow realizes virtual RDMA networking purely with a software-based approach using commodity RDMA NICs. Unlike existing RDMA virtualization solutions, FreeFlow fully satisfies the requirements from cloud environments, such as isolation for multi-tenancy, portability for container migrations, and controllability for control and data plane policies. FreeFlow is also transparent to applications and provides networking performance close to bare-metal RDMA with low CPU overhead. In our evaluations with TensorFlow and Spark, FreeFlow provides almost the same application performance as bare-metal RDMA.

NSDI '19 Open Access Sponsored by NetApp

Open Access Media

USENIX is committed to Open Access to the research presented at our events. Papers and proceedings are freely available to everyone once the event begins. Any video, audio, and/or slides that are posted after the event are also free and open to everyone. Support USENIX and our commitment to Open Access.

BibTeX
@inproceedings {225978,
author = {Daehyeok Kim and Tianlong Yu and Hongqiang Harry Liu and Yibo Zhu and Jitu Padhye and Shachar Raindel and Chuanxiong Guo and Vyas Sekar and Srinivasan Seshan},
title = {FreeFlow: Software-based Virtual {RDMA} Networking for Containerized Clouds},
booktitle = {16th {USENIX} Symposium on Networked Systems Design and Implementation ({NSDI} 19)},
year = {2019},
isbn = {978-1-931971-49-2},
address = {Boston, MA},
pages = {113--126},
url = {https://www.usenix.org/conference/nsdi19/presentation/kim},
publisher = {{USENIX} Association},
month = feb,
}