Processador Digam olá á Koomey's Law

[Bullit]

Koomey’s Law http://gfxspeak.com/2012/04/10/koomeys-law-rewrites-the-future-of-computing/

He explained in 10 minutes how computing efficiency—the number of computations completed per kilowatt-hour of electricity used—has doubled about every 18 months, going all the way back to Eniac and Univac I in the 1940s. Such an increase translates into a 100-fold increase in the electrical efficiency of computing every decade.

Koomey sees deeper implications for the next wave of computing. Customized data collection and more precise control over processing opens the door to real-time analysis, enabling an “internet of things” making smartphones seem quaint. The idea of ‘big data’ is popular today, but Koomey says it is time to start thinking about nanodata, data about individual transactions collected on a massive scale. “When analyzed in the right way [nanodata] can lead to great insight,” says Koomey.

Another benefit is more direct control over processes; always improving the ability to do exactly what we want to accomplish with computer processing using a minimal amount of energy.

The challenge is huge. Software engineers will have to provide new ways to pull insights from the massive amounts of data that will become available. Koomey was speaking at a conference on sustainability, and he pointed out the revolution in computational efficiency means we will have new tools at our disposal to more effectively manage energy supply and demand.
What’s the run rate?

In recent years some have questions the continued validity of Moore’s Law, although recent reductions in CPU size are keeping pace with the basic premise. Koomey sees plenty of room for continued improvement in the increase of computational energy efficiency. In 1985 famous physicist Richard Feynman envisioned a theoretical limit of a 3-atom transistor, and that if such a transistor was built it would have energy efficiency 100 billion times greater than the transistors on the market in 1985.

If Koomey’s trend line continues, we will hit the Feynman line in 2041. Koomey says that from 1985 to 2012 there has been a 40,000-fold increase in energy efficiency, so he sees a rosy future for his new law, at least for the next three decades. After that, as Feynman speculated, continued advances in computational energy efficiency will require single-atom transistors or transistors based on individual nuclei inside an atom. It just so happens researchers at Purdue University and the University of New South Wales have recently created a reliable one-atom transistor.

 

[Zealot]

Muito interessante.

 

[062413]

a evolução tal como esperada

 

[Resev]

É a evolução na direcção certa.
Potência a custo de necessidades energéticas sem limites é um modelo cada vez mais retrógrado e sem futuro sustentável.

Sou bastante energy-conscious na compra de hardware, e tento escolher o melhor a troco do mínimo incremento energético.
Veja-se o caso da minha gráfica. Tive durante alguns anos uma Geforce 9800GTX, (que já de si era uma versão mais eficiente energética-mente da 8800GTX) cujo pico de corrente era à volta dos 140w, e à pouco tempo comprei uma Radeon HD6870, cujo pico de corrente é à volta de 150w, mas as melhorias técnicas em certas características ascendem a 167% de melhoramento.

Koomey's Law FTW digo eu...