I made a mistake of saying 500 gigabytes of memory
thats processing 500 gigabytes per second. This is a quote from Wikipedia: " Watson is made up of a cluster of ninety IBM Power 750 servers (plus additional I/O, network and cluster controller nodes in 10 racks) with a total of
2880 POWER7 processor cores and
16 Terabytes of RAM. Each Power 750 server uses a 3.5 GHz POWER7 eight core processor, with four threads per core. The POWER7 processor's massively parallel processing capability is an ideal match for Watson's IBM DeepQA software which is embarrassingly parallel (that is a workload that is easily split up into multiple parallel tasks).[13]
According to John Rennie, Watson can
process 500 gigabytes, the equivalent of a million books, per second.[14] IBM's master inventor and senior consultant Tony Pearson estimated Watson's hardware cost at about $3 million[15] and with 80 TeraFLOPs would be placed 94th on the Top 500 Supercomputers list, and 49th in the Top 50 Supercomputers list.[16] According to Rennie, the content was stored in Watson's RAM for the game because data stored on hard drives are too slow to access.[14]"......
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