Data Center Ethernet and Remote Direct Memory Access: Issues at Hyperscale
Torsten Hoefler, Duncan Roweth, Keith D. Underwood, Robert Alverson, Mark A. Griswold, Vahid Tabatabaee, Mohan Kalkunte, Surendra Anubolu, Siyuan Shen, Moray McLaren, Abdul Kabbani, Steve Scott
Abstract
Remote direct memory access (RDMA) over converged Ethernet (RoCE) was an attempt to adopt modern RDMA features into existing Ethernet installations. We revisit RoCE’s design points and conclude that several of its shortcomings must be addressed to fulfill the demands of hyperscale data centers.
Topics & Concepts
Remote direct memory accessComputer scienceEthernetCarrier EthernetEthernet over PDHOperating systemComputer networkATA over EthernetEmbedded systemEthernet flow controlAdvanced Data Storage TechnologiesSoftware-Defined Networks and 5GNetwork Time Synchronization Technologies