ViVA (Virtual Vector Architecture) is a technology from
IBMfor coupling together multiple scalar floating point units to act as a single vector processor. Certain computing tasks are more efficiently handled through vector computations where an instruction can be applied to multiple elements simultaneously, rather than the scalar approach where one instruction is applied to one piece of data at a time. This kind of technology is highly sought after for scientific computing and is IBM's answer to the vector-based supercomputers pioneered by Crayand that was the basis for NEC's Earth Simulatorwhich was the fastest supercomputer in the world 2002-2004.
ViVA was developed and implemented by IBM together with
National Energy Research Scientific Computing Centerinside the Blue Planet project where they had 8 dual core POWER5processors made into one vector processor capable of approximately 60-80 GFLOPS of computing power. ViVA technology is in use in the ASC Purplesupercomputer.
Where ViVA was a software implementation in high-end POWER5 based systems, the second generation, ViVA-2, will be directly supported by hardware in the upcoming
* [http://news.com.com/IBM+supercomputing+goes+retro/2100-1010_3-5425551.html IBM supercomputing goes retro – CNet]
* [http://www.nersc.gov/news/reports/blueplanetmore.php Blue Planet: Extending IBM Power Technology and Virtual Vector Processing – NERSC]
* [http://www.es.jamstec.go.jp/esc/images/jes_vol.2/pdf/JES2_1Horst%20Simon.pdf Science-Driven System Architecture: A New Process for Leadership Class Computing – NERSC]
* [http://www.realworldtech.com/page.cfm?ArticleID=RWT121905001634 An eCLipz Looms on the Horizon – Real World Technologies]
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