George C. Dimitriou

Technology and Strategy Consulting

Archive for the ‘Computing’

5 Reasons to Teach Kids to Code.

October 12, 2013 By: George Category: Computing No Comments →

Infographic from Kodable, who teaches concepts necessary for ANY programming language.

5 Reasons to Teach Kids to Code

Big Data And Healthcare Infographic

January 31, 2013 By: George Category: Computing, Digital World, Trends No Comments →

Information provided by

Big Data and the Future of Healthcare

Apple is worth $500 Billion.

March 01, 2012 By: George Category: Computing, Digital World No Comments →

Apple’s valuation is now higher than the gross domestic product of Poland, Belgium, Sweden, Saudi Arabia, or Taiwan. (For more comparisons, check out this blog: Things Apple is Worth More Than

Windows is 25.

November 21, 2010 By: George Category: Computing No Comments →

25 years ago today that Microsoft released Windows 1.0. The world’s most popular operating system has gone through a number of versions since then, and the next iteration, Windows 8, is expected within 2 years.

At the time it launched, Windows actually wasn’t a full operating system. Rather, it was a graphical user interface (GUI) that ran on top of DOS. Microsoft Chairman Bill Gates said at launch that Windows 1.0, which carried a suggested retail price of $99 in 1985, was “unique software” that would provide “unprecedented power to users today and a foundation for hardware and software advancements of the next few years.” Windows has been the dominant operating system for the past two decades. Its future as such, however, is in doubt. Computing seems to be undergoing a fundamental shift away from the PC paradigm and toward mobile and tablet-based interfaces.

The graphic below, from ZDNet UK, illustrates the progression of Windows from November 20, 1985 to today.

The World’s Fastest Supercomputer is in China

October 28, 2010 By: George Category: Computing No Comments →

Unveiled today at the Annual Meeting of National High Performance Computing (HPC China 2010) in Beijing, Tianhe-1A is the world’s fastest supercomputer with a performance record of 2.507 petaflops, as measured by the LINPACK benchmark.

Tianhe-1A was designed by the National University of Defense Technology (NUDT)  in China, and it is already fully operational. To achieve the new performance record, Tianhe-1A uses 7,168 Nvidia Tesla M2050 GPUs and 14,336 Intel Xeon CPUs. It cost $88 million; its 103 cabinets weigh 155 tons, and the entire system consumes 4.04 megawatts of electricity.

Tianhe-1A ousted the previous record holder, Cray XT5 Jaguar, which is used by the U.S. National Center for Computational Sciences at Oak Ridge National Laboratories. It is powered by 224,162 Opteron CPUs and achieves a performance record of 1.75 petaflops.

According to Nvidia, Tianhe-1A will be operated as an open access system to use for large scale scientific computations.

Code Broken.

January 08, 2010 By: George Category: Computing, Security No Comments →

Researchers of the Cryptology and Information Security group of the Centrum Wiskunde & Informatica (CWI) in Amsterdam with partners from Germany (BSI and Bonn University), France (INRIA Nancy), Japan (NTT) and Switzerland (EPFL) have broken a 768-bit RSA key by finding its prime factors. This new record demonstrates the vulnerability of 768-bit RSA keys.

The first 512-bit RSA key was broken in 1999, in 2005 followed by the first 663-bit key. Extrapolating this trend, it is reasonable to expect that 1024-bit keys will exhibit a similar degree of vulnerability within the next decade as 768-bit keys do now.
The 768-bit factored key is an integer of 232 digits. During a timeframe of 2.5 years many thousands of CPUs on a large number of different locations were deployed to break this key. The total amount of computing power used is equivalent to 1700 2.2 GHz CPUs during one year.

Technical summary:
Preprint paper:

Security in the Ether.

December 26, 2009 By: George Category: Computing, Security No Comments →

The January issue of Technology Review features an important article discussing whether cloud computing is secure enough for broad public use. “Security in the Ether,” by David Talbot, brings to light some of the serious technology concerns from cloud based applications including Gmail, Twitter and Facebook.

Cloud crowd: Some 4,000 servers hum at Cloud crowd: Some 4,000 servers hum at IBM’s cloud computing center in San Jose, CA.   Credit: Jason Madara, CA.   Credit: Jason Madara