vendredi 30 décembre 2011

Défi Google Cloud [Nuit de l'Info 2011]

Défi Google Cloud [Nuit de l'Info 2011]

Description du défi

Le but de ce défi est SOIT de réaliser une application App Engine qui mobilise un maximum de puissance de calcul, SOIT de réaliser la meilleure application qui utilise la Prediction API de Google.

Si vous choisissez la prediction API, l'application sera jugée sur sa qualité générale et la pertinence de ses choix techniques.

Si vous choisissez la version “puissance de calcul” du défi, cette puissance sera mesurée en FLOPS sur une durée de votre choix. Il faudra bien entendu être capable de mesurer cette puissance avec une bonne fiabilité, et en convaincre le jury. Le calcul effectué doit également être pertinent d'un point de vue scientifique ou technique et également être adapté au thème général de la nuit (Exemples non pertinents: additionner les chiffres de 1 à N, faire N fois le même calcul, …). Sans rien révéler du thème, je vous conseille de commencer à regarder les algorithmes de datamining. Cette version du défi met l'accent sur la puissance de calcul et il sera acceptable de fournir une application qui ne résout qu'une partie (la partie calculatoire) d'une application plus générale correspondant au thème de la nuit.

La qualité de l'interface utilisateur sera un plus, notamment si elle met en valeur la puissance utilisée de façon originale.

dimanche 25 décembre 2011

And the Winners of the Cyber Challenge Are...

Government Computer News (12/19/11) William Jackson

The SANS Institute and the Common Knowledge Scholarship Foundation recently announced the winners of the most recent U.S. Cyber Challenge, a competition to identify future cybersecurity professionals.  Competitors came from more than 150 U.S. high schools, and the top finishers received more than $6,000 in scholarships.  More significant than the performance of the winners is the fact that more than 2,000 students from 169 schools in 32 states and three territories participated, says (ICS)2 Foundation director Julie Peeler.  "That's a good number of kids who are being exposed to cybersecurity, regardless of whether they go into the profession," Peeler says. "We are at least educating a larger workforce overall to an understanding of cybersecurity issues."  The Cyber Foundation competitions are part of a broader U.S. Cyber Challenge effort that includes summer camps for college, high school, and younger students, the Air Force Association's Cyber Patriot program, and several other scholarship and training programs aimed at developing a future professional cybersecurity workforce.  Launched in 2009, the U.S. Cyber Challenge set a goal of identifying and recruiting 10,000 people with native skills needed for cybersecurity.

Traditional Social Networks Fueled Twitter's Spread

MIT News (12/21/11) Caroline McCall

Massachusetts Institute of Technology (MIT) researchers studied the growth of Twitter from 2006 to 2009 and found that its initial growth in the United States relied heavily on media attention and traditional social networks based on geographic proximity and socioeconomic similarity.  The researchers examined data from 16,000 U.S. cities, focusing on the 408 with the highest number of Twitter users.  They characterized cities as early adopters, early majority adopters, late majority adopters, or laggards based on when 13.5 percent of the population had Twitter accounts.  "The social network needs geographical proximity," says MIT professor Marta Gonzalez.  "In the U.S., anyway, space and similarity matter."  The researchers found that Twitter's initially popularity was fueled by young, tech-savvy users in San Francisco and Boston.  However, after that it began to follow a more traditional pattern by traveling short distances, which implied that personal interactions were important to its wider use.  "Nobody has ever really looked at the diffusion among innovators of a no-risk, free, or low-cost product that's only useful if other people join you," says MIT graduate student Jameson Toole.  "It's a new paradigm in economics: what to do with all these new things that are free and easy to share."

dimanche 18 décembre 2011

openvpn - Documentation Ubuntu Francophone

Pascal Fares added you to his circles and invited you to join Google+

Pascal Fares added you to his circles and invited you to join Google+.
Join Google+
Google+ makes sharing on the web more like sharing in real life.
An easy way to share some things with college buddies, others with your parents, and almost nothing with your boss. Just like in real life.
Conversations are better face-to-face. Join a video hangout from your computer or mobile phone to catch up, watch YouTube videos together, or swap stories with up to 9 of your friends at once.
Lightning-fast group chat. Photos that upload themselves. A bird's-eye view of what's happening nearby. We built Google+ with mobile in mind.
You received this message because Pascal Fares invited to join Google+. Unsubscribe from these emails.

SSH_VPN - Community Ubuntu Documentation

This page discusses using SSH to set up SSH-based point to point connections, which can then be used to create routes that create virtual private networks.


Did Apple's iPhone Redefine Photography?The Next Web

vendredi 16 décembre 2011

France : iOS capterait plus de 82% des visites d'applications

vis d'expert - Malgré un nombre de terminaux en circulation plus important, Android ne concentrerait que 16% des visites d'applications selon une étude de AT Internet.
lire la suite:

- partagé via le bouton Google Share

jeudi 15 décembre 2011

Fwd: High Quality Apps - Faster with Reduced Risk and Cost, and more!

---------- Message transféré ----------
De : "SourceForge Resource Newsletter" <>
Date : 15 déc. 2011 14:39
Objet : High Quality Apps - Faster with Reduced Risk and Cost, and more!
À : <>

                                               Resource Newsletter 


In This Issue: 

Five Myths of Cloud Computing
Featured Resource:
Cost/Benefit Case for Enterprise Warehouse Solutions
Data warehousing has emerged as one of the IT world's fastest growth areas. Demand for high-quality, current information and for tools to interpret and exploit it shows no signs of abating. The report provides an in-depth comparison of three platforms designed for this purpose: IBM Smart Analytics System 7700, Oracle Exadata Database Machine and Teradata's flagship Active Enterprise Data Warehouse (Active EDW) 6650.  Results are based on input from 46 users of these systems and their recent predecessors, on other industry sources, as well as on research and analysis conducted by the International Technology Group.

Visit the Webcast library!  Webinars, Videos, Digital Events and More!
Whitepapers & Technical Briefings    
Five Myths of Cloud Computing
Cloud computing continues to grow in popularity among the IT industry. And more businesses are advertising that they are the front runner for providing the best cloud services. However, in this race to remain top dog, IT pros remain unsure of what cloud computing is and the benefits it can bring to their organization.
High Quality Apps -  Faster with Reduced Risk and Cost
Successful organizations are taking advantage of these new capabilities to produce smarter software applications and to carve out new niches in the marketplace. Software is the invisible thread of innovation that helps make ongoing innovation and growth happen. However, most organizations continue to struggle with leveraging their software investments for strategic differentiation.

Evolution of Legacy Network Infrastructure
The promise of the next-generation network is great - the seamless delivery of media-rich content, virtualization, mobility, and cloud computing. Migrating legacy infrastructures to achieve the high-performance you organization requires, takes time and strategic planning.  Understand the evolution of the enterprise network infrastructure to a high-performance next-generation network, from data center to edge. Topics covered include IPV4, IPV6, flexible network architecture, cloud computing, multi-vendor network management, mobility, unified communications, network convergence, and more. 
Defining the Next-Generation Server
Running a data center in today's enterprise computing environment is no easy task. Data center managers need to consolidate - saving power, floor space and other facility overheads, as well as use resources efficiently. They have to be able to manage and process vast datasets ("big data") and solve compute-intensive problems without losing the ability to run more routine computing needs. They need to be able to connect, as required, with new cost-effective cloud computing services.

Technology Fueling the Next Phase of Storage Optimization
IT organizations are plagued by issues of data growth, more stringent requirements for recovery time objectives (RTO's) and recovery point objectives (RPO's), and reduction in operational staff to manage it all.  Disk-assisted data protection aids in accelerating backup and recovery performance -- and data deduplication makes the economics of implementing disk-to-disk backup more feasible.  Today's most popular backup storage features deduplication, but doesn't address the long-term operational issues that arise as secondary storage environments expand.  

10 Tips for Better Server Consolidation
Every organization today is looking for ways to build faster services and accelerate the delivery of mission-critical applications while reducing costs. Improving server infrastructure is crucial to accomplishing these goals. Server consolidation achieved through virtualization is essential to this strategy. But how can you better utilize virtualization? 10 must-read tips that can help any IT manager better leverage virtualization technologies and more easily consolidate servers and improve the efficiency of their infrastructure.
5 Ways Your Anti-Malware Solution is Draining your Budget
As IT environments become more complex and the malware threat more burdensome, enterprise IT staffs are being forced to re-evaluate their anti-malware solutions. The solutions that worked yesterday are ineffective against today's threats that exploit mobile platforms, open source operating systems and the Web. Anti-malware is no longer a commodity and businesses find their current solution is costing them in ways they never before imagined.

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dimanche 11 décembre 2011

Open source web conferencing | The Open Source Advocate

Link: (via

Have you ever wanted to attend a webinar but quickly discovered that the web-conference service doesn't even support your operating system? This has happened to me several times and it irks me greatly! I always make sure to tell the company that they should switch their web-conferencing service to one that supports multiple platforms including Linux.

It is somewhat hypocritical when an open source company offers a webinar about their open source product, but they don't allow customers with open source operating systems like Linux to attend. I ran into this ridiculous issue when trying to attend a Zimbra webinar. I told them that it was wrong for them to have such great multi-platform support in their product and at the same time only allow Windows users to participate in their webinars. We'll see if they take that advice to heart.

A conference GNU/Linux Server

Link: (via

Dear reader, you may be involved in organising conferences or just simple meeting. You know that it is sometime difficult for some participants to attend such meetings, travel costs, hotel bookings, important deadlines to meet, while they could be listening to the proceeding from work and interact from time to time with the speakers. I wanted to leverage my knowledge of Linux to provide an all in one solution on one machine to provide, Internet access to participants and allow everybody with an Internet connection to participate in the meeting.

This HOWTO is published on The Linux Documentation Project this is where you will find the latest version of this document.

Comparison of web conferencing software - Wikipedia, the free encyclopedia

Video Conferencing, Web Conferencing & Webinar Solutions |

GoToMeeting : Online Meetings Made Easy (R)

Link: web_ meeting/ROWPPC/g2msem3/sf/701000000005L0s;jsessionid=abc5kPl8lMnXjhTO1DTqt? (via

Un ami vous a envoyé un lien depuis :

J'ai trouvé cette page qui pourrait t'intéresser. TEST réseaux sociaux tikiwiki version8.2

vendredi 9 décembre 2011

In Race for Fastest Supercomputer, China Outpaces U.S.

Newsweek (11/28/11) Dan Lyons

China is outpacing the United States in terms of supercomputer development.  In November the Chinese debuted the Tianhe-1A, a supercomputer with five times the processing power of the biggest computer at the U.S.'s Lawrence Livermore National Laboratory.  The country that develops a superior high-performance computing system gains massive economic and military advantages, and the U.S.'s loss to a competing nation in the field of supercomputing could jeopardize its edge in many scientific, security, and military areas.  To close the gap, Livermore scientists are developing Sequoia, a supercomputer that will combine 1.6 million microprocessors and trump the Tianhe-1A's computing power by a factor of eight.  Although the United States has 263 of the world's 500 largest supercomputers, China has built 74 in just 10 years.  Adding to U.S. developers' pain are Chinese organizations devising supercomputer components that will allow China to end its reliance on U.S. vendors for parts.  Livermore scientists also project the emergence of an exascale machine that taps the computing muscle of about 1 billion microprocessors and delivers six times the power of Sequoia within a decade.  Crucial to this milestone will be a new kind of microprocessor that is far more energy-efficient than today's chips.