By 邓侃 Ph.D
dengkan@smartclouder.com
02/28/2012
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• 5 phases of computing growth, since 1960’s.
1. Main-frame, 2. Minicomputer, 3. PC, 4. Internet, 5. Mobile Internet.
• Every phase, the total amount of user-time, increased 10 times.
The sum of the top 5 companies’ market value increased 10 times every phase.
• With mobile internet, the big amount of user-times, induces big data。
The technical challenge is how to deal with big data.
• The solution to the big data challenge, is cloud computing.
Mobile
Internet
1 Billion US$
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Intel Pentium4 CPU’s power is
10,000 MIPS
MIPS: Million Instructions Per Second.
• 1965, Moore’s Law:
The number of transistors in IC doubles every 2 years, or even 18 months.
• Still, the power of a single CPU, cannot beat the human brain power.
Solution: use many computers.
• Challenge, to orchestrate many computers working together.
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• Cloud computing can be built
with commodity PC servers.
• The most successful cloud so far, was by two graduate students.
Larry Page from University of Maryland, (北航 in the US).
Sergey Brin from UIUC, (北邮 in the US).
Google’s initial cloud
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