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A Framework to Enable Runtime Programmable P4-enabled FPGAs in the Open Cloud Testbed

https://doi.org/10.1109/INFOCOMWKSHPS57453.2023.10225877

Han, Zhaoyang; Handagala, Suranga; Patle, Kalyani; Zink, Michael; Leeser, Miriam (May 2023, The 10th International Workshop on Computer and Networking Experimental Research using Testbeds (CNERT))

This paper presents a framework for cloud users who wish to specify their experiments in the P4 language and map them to FPGAs in the Open Cloud Testbed (OCT). OCT consists of P4-enabled FPGA nodes that are directly connected to the network via 100 gigabit Ethernet connections, and which support runtime reconfiguration. Cloud users can quickly prototype and deploy their P4 applications through our framework, which provides the necessary infrastructure including a network interface shell for the P4 logic. We have provided several examples using this framework that demonstrate designs running at the 100 GbE line rate with the support of runtime reconfiguration for P4 functions. By combining an existing network interface shell and P4 toolchain on FPGAs, we offer a framework that enables users to rapidly execute their P4 experiments in real time on FPGAs.
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A Framework to Enable Runtime Programmable P4-enabled FPGAs in the Open Cloud Testbed

Han, Zhaoyang; Handagala, Suranga; Patle, Kalyani; Zink, Michael; Leeser, Miriam (April 2023, The 10th International Workshop on Computer and Networking Experimental Research using Testbeds (CNERT))

This paper presents a framework for cloud users who wish to specify their experiments in the P4 language and map them to FPGAs in the Open Cloud Testbed (OCT). OCT consists of P4-enabled FPGA nodes that are directly connected to the network via 100 gigabit Ethernet connections, and which support runtime reconfiguration. Cloud users can quickly prototype and deploy their P4 applications through our framework, which provides the necessary infrastructure including a network interface shell for the P4 logic. We have provided several examples using this framework that demonstrate designs running at the 100 GbE line rate with the support of runtime reconfiguration for P4 functions. By combining an existing network interface shell and P4 toolchain on FPGAs, we offer a framework that enables users to rapidly execute their P4 experiments in real time on FPGAs.
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Network Attached FPGAs in the Open Cloud Testbed (OCT)

https://doi.org/10.1109/INFOCOMWKSHPS54753.2022.9798375

Handagala, Suranga; Leeser, Miriam; Patle, Kalyani; Zink, Michael (May 2022, IEEE INFOCOM 2022 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS))

The Open Cloud Testbed (OCT) provides nodes with Field Programmable Gate Arrays (FPGAs) that are under the complete control of the user and are directly attached to a network switch via two 100Gbps connections. We provide TCP and UDP stacks on the FPGAs. In addition, users have the ability to experiment with their own protocol. We present several experiments which make use of this capability including TCP throughput measurements, an encryption/decryption example, and machine learning inference split across two FPGAs where the images are input on one node and the labelled output available on a second node. The testbed is available for researchers to perform their own experiments, and includes a development platform that allows users to create FPGA applications. Network measurement results show we achieve close to peak bandwidth by tuning appropriate parameters.
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