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Deploying Multi-tenant FPGAs within Linux-based Cloud Infrastructure

Published: 01 December 2021 Publication History

Abstract

Cloud deployments now increasingly exploit Field-Programmable Gate Array (FPGA) accelerators as part of virtual instances. While cloud FPGAs are still essentially single-tenant, the growing demand for efficient hardware acceleration paves the way to FPGA multi-tenancy. It then becomes necessary to explore architectures, design flows, and resource management features that aim at exposing multi-tenant FPGAs to the cloud users. In this article, we discuss a hardware/software architecture that supports provisioning space-shared FPGAs in Kernel-based Virtual Machine (KVM) clouds. The proposed hardware/software architecture introduces an FPGA organization that improves hardware consolidation and support hardware elasticity with minimal data movement overhead. It also relies on VirtIO to decrease communication latency between hardware and software domains. Prototyping the proposed architecture with a Virtex UltraScale+ FPGA demonstrated near specification maximum frequency for on-chip data movement and high throughput in virtual instance access to hardware accelerators. We demonstrate similar performance compared to single-tenant deployment while increasing FPGA utilization, which is one of the goals of virtualization. Overall, our FPGA design achieved about 2× higher maximum frequency than the state of the art and a bandwidth reaching up to 28 Gbps on 32-bit data width.

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Published In

cover image ACM Transactions on Reconfigurable Technology and Systems
ACM Transactions on Reconfigurable Technology and Systems  Volume 15, Issue 2
June 2022
310 pages
ISSN:1936-7406
EISSN:1936-7414
DOI:10.1145/3501287
  • Editor:
  • Deming Chen
Issue’s Table of Contents

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 December 2021
Accepted: 01 July 2021
Revised: 01 May 2021
Received: 01 January 2021
Published in TRETS Volume 15, Issue 2

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Author Tags

  1. Cloud
  2. FPGA
  3. multi-tenancy
  4. network-on-chip
  5. virtualization
  6. KVM

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  • Research-article
  • Refereed

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  • National Science Foundation (NSF)
  • Office of Naval Research (ONR)

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  • (2024)Security Risks Due to Data Persistence in Cloud FPGA Platforms2024 IEEE 67th International Midwest Symposium on Circuits and Systems (MWSCAS)10.1109/MWSCAS60917.2024.10658894(1398-1402)Online publication date: 11-Aug-2024
  • (2024)Performance Evaluation of VirtIO Device Drivers for Host-FPGA PCIe Communication2024 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW)10.1109/IPDPSW63119.2024.00043(169-176)Online publication date: 27-May-2024
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