Date: Tue, 28 Jun 2011 22:20:49 +0900
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2012/07/09
"Avago Technologies Announces High-Density 120 Gbps Parallel Optical Solutions
For Cloud Computing and Data Center Applications"
June 26, 2012
http://www.avagotech.com/pages/en/press/minipod_cxp/
"Industry underestimating 25 Gigabit parallel optics challenge"
July 6, 2012, Gazettabyte
http://www.gazettabyte.com/home/2012/7/6/industry-underestimating-25-gigabit-parallel-optics-challeng.html
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IBM Power 775筐体間は光ファイバー (120Gbps) で接続するそうです：
(最大 2,048ノード、3リンクホップ以下)
"Boosting high-performance computing with optics"
JUNE 28, 2011, Gazettabyte
http://www.gazettabyte.com/home/2011/6/28/boosting-high-performance-computing-with-optics.html
"IBM has adopted optical interfaces for its latest POWER7-based
high-end computer system. Gazettabyte spoke to IBM Fellow,
Ed Seminaro, about high-performance computing and the need for
optics to address bandwidth and latency requirements."
.....
"Using optical engines, each node - a specialised computing card -
has a total bandwidth of 224, 120 Gigabit-per-second (12x10Gbps)
VCSEL-based transmitters and 224, 120Gbps receivers. The interfaces
can interconnect up to 2,048 nodes, over half a million POWER7
cores, with a maximum network diameter of only three link hops.
IBM claims that with the development of the Power 775, it has
demonstrated the superiority of optics over copper for high-end
computing designs."
