Monday, October 31, 2011

China's Newest Supercomputer Uses Homegrown Chips



China has built its first supercomputer based entirely on homegrown microprocessors, a major step in breaking the country's reliance on Western technology for high-performance computing .



China's National Supercomputer Center in Jinan unveiled the computer last Thursday, according to a report from the country's state-run press. The supercomputer uses 8,704 "Shenwei 1600" microprocessors, which were developed by a design center in Shanghai, called the National High Performance Integrated Circuit Design Center.

Details of the microprocessors and the design center were not immediately available.

The supercomputer has a theoretical peak speed of 1.07 petaflops (quadrillion floating-point calculations per second), and a sustained performance of 0.79 petaflops when measured with the Linpack benchmark. This could place it at number 13 in the world's top 500 supercomputing.

China's Shandong Academy of Sciences built the computer. Officials of the academy could not be immediately reached for comment on Monday. 

A report from The New York Times said the supercomputer's name in English was the Sunway BlueLight MPP.

China is increasingly investing in supercomputing technology. Last November, its Tianhe-1A supercomputer briefly grabbed the spot as the world's most powerful, but the computer used chips from Intel and Nvidia. The Tianhe-1A has a theoretical peak speed of 4.7 petaflops and a sustained performance of 2.5 petaflops.

China currently has 61 supercomputers on the top 500 list. In comparison, the U.S. has 255 on the list. Japan's "K Computer" is currently ranked first in the top 500 list, after bumping Tianhe-1A to the second place. 

Experts have been anticipating that China would build its own supercomputer, using domestically developed chips. Chinese state-run press hailed the new supercomputer as a symbol of China's strength. 

Courtesy PCWORLD

Friday, October 28, 2011

PROTOCOL

A set of rules for the exchange of information, such as those used for successful data transmission.

COMMUNICATION PROTOCOL

communications protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications. 

TCP (TRANSMISSION CONTROL PROTOCOL)

TCP (TRANSMISSION CONTROL PROTOCOL)
LAYER 4 PROTOCOL
16 Bits data for PORT opening.

The protocol controls the transmission of data to enter the Session, Presentation & Application layer. It is assigned by IEEE in 1974. It is one of the main protocol in computer networking.

Sunday, October 23, 2011

COMMUNICATION


Communication is the process of conveying or transferring messages from one point to another.