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Hardware Implementation pFabric: Minimal Near-Optimal Datacenter Transport Original paper: Mohammad Alizadeh, Shuang Yang, Sachin Katti, Nick McKeown, Balaji Prabakhar, Scott Shenker Further work on NetFPGA-based implementation: Yan Michalevsky Department of Electrical Engineering, Stanford University pFabric Simulation Future Plans Motivation: Providing Near-Optimal Performance for Flows in a Datacenter Network - Initial simulation performed using NS-2 network simulator. - Results confirmed by a different team using the Mininet network emulation framework (Wendy Mu, Bridget Vuong). - pFabric is expected to provide near-optimal flow completion times and outperform the compared schemes (TCP DropTail, DCTCP, PDQ). Goals - Provide fairness and high throughput in presence of simultaneous mice and elephant flows. - A simple scheme that can be practically deployed step-by-step using existing equipment. Solution Simple packet scheduling logic according to flow priority set by endpoints (based on remaining flow size). - Based on NetFPGA 10G (netfpga.org) - Step-by-step implementation starting with a simple priority- queues based scheme. - Integration with RAMCloud project - Implementation of the full pFabric scheme - Validation of pFabric’s promise in a real high-speed network - How can we approximate remaining flow size when it is not available in advance?
