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Wide Area InfiniBand

Wide Area InfiniBand. What it is, and why it is. Obsidian Strategics Inc. David Southwell dsouthwell@obsidianstrategics.com. ESCC/ Internet2 Winter 2008 Joint techs Jan 22 Honolulu, HI. 2. 4. 3. 1. InfiniBand 101.

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Wide Area InfiniBand

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  1. Wide Area InfiniBand What it is, and why it is Obsidian Strategics Inc. David Southwell dsouthwell@obsidianstrategics.com ESCC/ Internet2 Winter 2008 Joint techs Jan 22 Honolulu, HI

  2. Obsidian Strategics 2 4 3 1 InfiniBand 101 Open standard for high bandwidth, low latency, low CPU overhead, highly scalable interconnect. 1X, 4X, 8X or 12X channels at 2.5, 5.0 or 10.0 Gbits/s per link (less 20% for 8B/10B encoding). 1X SDR = 2Gbits/s, 12X QDR = 96Gbits/s (silicon Q1'08) - today, mostly 8 or 16Gbits/s deployed. Cut-through switches – 60ns latency, scaling to thousands of ports. Open stacks for Linux (Windows) – Open Fabrics Alliance Low CPU loading due to Remote Direct Memory Access (RDMA)‏ Lossless flow control using buffer-credit scheme – very efficient but limits link lengths! Host Channel Adapter A Host Channel Adapter B Across IB link Update credit From user-space memory Into user-space memory

  3. Obsidian Strategics Equipment for range-extended InfiniBand Wide Area - SDR 4X IB + dual GbE payloads - Global reach over 10G WANs: OC-192 or 10Gbase-LW/LR SONET/ ATM/ GFP-F/ IPv6 POS - 2-port IB switch or router modes Campus Area - 10/40km dark fiber (LR/ER optics)‏ - 2-port IB switch mode only Secure Wide Area (functional prototype stage)‏ - Global reach over 10GbE WANs - 2-port IB switch or router modes - Line-rate AES-192 crypto

  4. Obsidian Strategics Applications

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