Innovation Science Technology

Three Performance-Limiting Walls

“Three Performance-Limiting Walls” is a term coined to represent the three important limiters of microprocessor performance – power use, memory use, and processor frequency. The three walls consist of – the power wall, the memory wall and the frequency wall. Personally, I think that of these three, the memory wall is the tricky one since it is non-intuitive for us to think of layered memory access rather than the more intuitive flat memory access. This graph nicely summarises the problem. Popular solutions include multi-core architectures, innovative memory architectures (Cell), and fundamental improvments in memory (eDRAM) for example.

Three Performance-Limiting Walls (slides 2-3)

Art History Science Social

Old Islamic tile patterns show modern math insight

“A study of medieval Islamic art has shown some of its geometric patterns use principles established centuries later by modern mathematicians.”

Advanced geometry of Islamic art

Health Nature Science Social Technology

Scientists must learn to market their work

Simplification and availability of information enables us to do bigger/better things. “(Scientists should) take their scientific studies, market them better and make them readily accessible to the world. That way, the world might have a better chance at solving problems like energy consumption, poverty and global climate change.”

Google’s Page urges scientists to market themselves

Business Innovation Nature Science Social Technology

Garbage -> Fuel

Researchers have built and tested for the military a portable machine that efficiently turns waste into electricity.

A Portable Refinery Powered by Garbage

Innovation Nature Science Technology

Water computer

MIT’s Paulo is doing some exciting work with ‘Programmable Water’; very early days, nonetheless very exciting. My dad started his PhD research at IIT Bombay in 1972 on exactly this topic!

Do we really invent things or simply rediscover them?

Programmable Water

Health Innovation Science Technology

Enabling the blind to see

Researchers at University of California have developed retinal implants creating a bionic eye, enabling the blind people to retore their visual capabilities. The resolution is poor due to early days, but has great potential.

Bionic eye implants look ahead

Business Innovation Science Technology

‘high-k’ ensures that Moore’s Law will endure

Touted as the biggest change in computer chips in 40 years, the ‘high-k’ stuff allows to transition from current 65nm process to 45nm; Moore’s Law to endure, contrary to popular belief every n years that it has reached its limits! A simultaneous and independent breakthrough by IBM (and co) and Intel. IBM is to focus on higher performance, whilst Intel is to focus on lower power consumption at equivalent or better performance.

IBM, Intel pace each other with improved transistors

Health Nature Science Social

Vegetarian is the New Prius

Would you believe me if I said the livestock sector generates more emissions than from all of the world’s transportation combined!? “Producing a calorie of meat protein means burning more than ten times as much fossil fuels.”

Vegetarian is the New Prius

Business Nature Science Social

Long-term economic impact of climate change

The Insurance industry needs to provide leadership for a change, even though contradictingly it is accepted that most big insurers are heavily invested in those businesses that are the biggest contributors to global warming. Furthermore, even if we can convince businesses in US and Europe, how can we make our point to emerging countries who are contributing emissions that are ~5% of US, but is rapidly rising?

A Changing Climate

India Innovation Science Social

Can’t find it with search? Ask!

Yahoo! Answers motto – “Can’t find it with search? Ask”. It is simply a bigger version of a typical “news group” with better look and feel; or there is more to it?

Dr. Stephen Hawking asks “How can the human race survive the next hundred years”?

The President of India asks “What should we do to free our planet from terrorism”?