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Remote Direct Memory Access (RDMA) over IP PFLDNet 2003, Geneva Stephen Bailey, Sandburst Corp., steph@sandburst.com Allyn Romanow, Cisco Systems, allyn@cisco.com
RDDP Is Coming Soon ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Overview ,[object Object],[object Object],[object Object]
CFP SigComm Workshop ,[object Object],[object Object],[object Object]
High Speed Data Transfer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is RDMA? ,[object Object],[object Object],[object Object],[object Object]
Traditional Data Center Servers The World Ethernet/ IP Storage Network (Fibre Channel) Database Intermachine Network (VIA, IB, Proprietary) application A Machine
Why RDMA over IP? Business Case ,[object Object],[object Object],[object Object],[object Object]
The Technical Problem- I/O Bottleneck ,[object Object],[object Object],[object Object],[object Object],[object Object]
Copying ,[object Object],NIC 1 User Buffer Packet Buffer Packet Buffer 2 Data copies
Why Is Copying Important? ,[object Object],[object Object],[object Object],64 KB window, 64 KB I/Os, 2P 600 MHz PIII, 9000 B MTU 0.2 CPUs 0.2 CPUs 891 1 Gb/s RDMA SAN - VIA 1.2 CPUs 0.5 CPUs 769 1 GBE, TCP Rx CPUs Tx CPUs Throughput (Mb/sec) Test
What’s In RDMA For Us? ,[object Object],2500 machines using 30% CPU for I/O 1750 machines using 0% CPU for I/O
Approaches to Copy Reduction ,[object Object],[object Object],[object Object],[object Object],[object Object]
RDMA over IP Standardization ,[object Object],[object Object],[object Object],[object Object]
RDMA over IP Architecture ,[object Object],[object Object],[object Object],IP Transport DDP RDMA control ULP
Upper and Lower Layers ,[object Object],[object Object],[object Object],[object Object]
Open Issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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slides

  • 1. Remote Direct Memory Access (RDMA) over IP PFLDNet 2003, Geneva Stephen Bailey, Sandburst Corp., steph@sandburst.com Allyn Romanow, Cisco Systems, allyn@cisco.com
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  • 7. Traditional Data Center Servers The World Ethernet/ IP Storage Network (Fibre Channel) Database Intermachine Network (VIA, IB, Proprietary) application A Machine
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Hinweis der Redaktion

  1. I’m not sure what equipment costs and topological flexibility are-?
  2. Under Test you have 1GBE and 1Gb/s – not the same, needs to be fixed, I assume.