Remote direct memory access: Difference between revisions

Revision as of 19:16, 26 February 2019

Revision as of 05:28, 14 March 2019

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== Acceptance ==

As of 2018 RDMA had achieved broader acceptance as a result of implementation enhancements that enable good performance over ordinary networking infrastructure <ref>RoCE Rocks over Lossy Network: https://dl.acm.org/citation.cfm?id=3098588&dl=ACM&coll=DL</ref>. For example RoCE (RDMA over Converged Ethernet) now is able to run over either lossy or lossless infrastructure. In addition [[iWARP]] enables an [[Ethernet]] RDMA implementation at the physical layer using [[Transmission Control Protocol|TCP]]/[[Internet Protocol|IP]] as the transport, combining the performance and latency advantages of RDMA with a low-cost, standards-based solution.<ref>{{cite web|url=https://www.intel.com/content/dam/support/us/en/documents/network/sb/understanding_iwarp_final.pdf|title=Understanding iWARP|publisher=Intel Corporation|accessdate=16 May 2018}}</ref> The RDMA Consortium and the DAT Collaborative<ref>{{cite web|url=http://www.datcollaborative.org/|title=DAT Collaborative website|publisher=|accessdate=14 October 2014|deadurl=yes|archiveurl=https://web.archive.org/web/20150117180600/http://www.datcollaborative.org/|archivedate=17 January 2015|df=}}</ref> have played key roles in the development of RDMA protocols and [[Application programming interface|APIs]] for consideration by standards groups such as the [[Internet Engineering Task Force]] and the Interconnect Software Consortium.<ref>[http://www.opengroup.org/icsc/ The Interconnect Software Consortium website] {{webarchive|url=https://web.archive.org/web/20050830201232/http://www.opengroup.org/icsc/ |date=2005-08-30 }}</ref>

Hardware vendors have started working on higher-capacity RDMA-based network adapters, with rates of 100&nbsp;Gbit/s reported.<ref>{{cite web|url=http://www.mellanox.com/page/file_storage/|title=Microsoft Based Solutions - Mellanox Technologies|publisher=|accessdate=14 October 2014}}</ref><ref name="chelsio">{{cite web|url=http://www.chelsio.com/chelsio-to-demonstrate-40g-smb-direct-rdma-over-ethernet-for-windows-server-2012/|title=40Gbe SMB Direct RDMA Over Ethernet For Windows Server 2012 - Chelsio Communications|publisher=|accessdate=14 October 2014}}</ref> Software vendors, such as [[Red Hat]] and [[Oracle Corporation]], support these APIs in their latest products,<ref>https://access.redhat.com/solutions/22188</ref> and {{as of|2013|lc=on}} engineers have started developing network adapters that implement RDMA over Ethernet.<ref>

{{cite web

| url= http://www.chelsio.com/chelsio-to-demonstrate-40g-smb-direct-rdma-over-ethernet-for-windows-server-2012/

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</ref>

Both [[Red Hat Enterprise Linux]] and [[Red Hat Enterprise MRG]]<ref>{{cite web|url=https://investors.redhat.com/news-and-events/press-releases/2011/06-23-2011|title=Red Hat Enterprise MRG 2.0 Now Available|publisher=|accessdate=23 June 2011|deadurl=yes|archiveurl=https://web.archive.org/web/20160825215016/https://investors.redhat.com/news-and-events/press-releases/2011/06-23-2011|archivedate=25 August 2016|df=}}</ref> have support for RDMA. Microsoft supports RDMA in Windows Server 2012 via [[Server Message Block|SMB Direct]]. VMware's ESXi product also supports RDMA as of 2015.

Common RDMA implementations include the [[Virtual Interface Architecture]], [[RDMA over Converged Ethernet]] (RoCE), [[InfiniBand]], [[Omni-Path]] and [[iWARP]].