Headline Dec 11, 2015/ "' COMPUTER SCIENCE.... via .. ..CLIMATE SCIENCE "'

"' COMPUTER SCIENCE.... via .. 


WITH MOST RESPECTFUL dedication to this great American Hero : President Woodrow Wilson: 

AMERICA'S SOLE PRESIDENT WITH A PH.D. He pushed through the most progressive political agenda the nation had ever seen.

Entering politics when he was 53, he found nature catapult him from the presidency of Princeton University to the governorship of New Jersey to the Presidency of United States....all within just 25 months.   

IT IS PERHAPS the most daunting challenge facing experts in the fields of computer science and climate science -

Creating a supercomputer that can accurately model the future of the planet in a set of equations and how the forces of climate change will affect it.

It is a task that would require running an immense set of calculations for several weeks and then recalculating them hundreds of times with different variables.

Such machines will need to be more than  100 times  faster than today's most powerful supercomputers, and ironically, such an effort to better understand the threat of climate change could actually contribute to global warming.

If such a computer were built using today's technologies, a so-called  exascale computer  would consume electricity equivalent in  200,000  homes and might cost $20 million or more annually to operate.

For that reason, the scientists planning the construction of these ultrafast computers have been stalled while they wait for  yet-to-emerge low-power computing techniques capable of significantly reducing the power requirements for an exascale computer.

Developing such techniques, however, has been particularly vexing because virtually every aspect of designing faster computers consumes more electricity and generates more heat.

Computer engineers now believe that sometimes between  2020 and 2030 is a likely arrival date for the next generation of supercomputers.

But Dr. Krishna Palem, a computer scientist at Rice University, believes he has found a shortcut.

He has been stirring debate among  computer architects  by arguing that a counterintuitive computer design approach   - one that he originally proposed to give smartphones longer battery life   -can also be used to build faster and less power-hungry supercomputers.

Dr. Palem says his method offers a simple straightforward path around the energy bottleneck. By stripping away the transistors that are used to add accuracy, it will be possible to cut the energy demands of calculating while increasing performance speeds, he claims.

His  low-power crusade recently attracted followers among some climate scientists. "Scientific calculations like weather and climate modelling are generally, inherently inexact," Dr. Palem said:

"We've shown that amongst inexact computation, technologies need not degrade the quality of the weather climate simulation."

Climate models are immense set of differential equations that simulate the interactions of  physics, fluid motion and chemistry. To create models, scientists turn the world into a three-dimensional grid and compute the equations.

Current climate models used with supercomputers have cell sizes of about 100 kilometres, representing the climate for that area of Earth's surface. To more accurately predict the long-term impact of climate change will require shrinking the cell size to just a single kilometres.

Such a model would require more than  200 million cells and roughly three weeks to compute one simulation of climate change over a century.

The Honour and Serving of the latest  ''Technology Operational Research'' continues. Thank you for reading and see Ya all on the following one:

With respectful dedication to the Students, Professors and Teachers of the World. See Ya all on !WOW!   -the World Students Society :

''' The Battle For Peace '''

Good Night and God Bless

SAM Daily Times - the Voice of the Voiceless


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