Remote direct memory access: Difference between revisions

Revision as of 15:59, 13 April 2018

Revision as of 15:04, 14 April 2018

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== Acceptance ==

Much like other [[high-performance computing]] (HPC) interconnects, {{As of|2013|lc=y}} RDMA has achieved limited acceptance due to the need to install a different networking infrastructure. However, new standards such as [[iWARP]] enable [[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=http://www.intel.com/content/dam/doc/technology-brief/iwarp-brief.pdf|title=Understanding iWARP|publisher=Intel Corporation|accessdate=17 August 2015}}</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 40&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>

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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]].

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* [http://www.rdmaconsortium.org/home RDMA Consortium]

* [http://www.hpcwire.com/2006/09/15/a_tutorial_of_the_rdma_model-1/ A Tutorial of the RDMA Model]

* [https://web.archive.org/web/20090722111255/http://www.hpcwire.com/features/17888274.html RDMA usage]

* [http://www.hpcwire.com/hpcwire/2006-08-18/a_critique_of_rdma-1.html A Critique of RDMA] for high-performance computing