Tag Archives: ios

General Purpose GPU Programming for Mobile

 

GPU_Computing

There are times that your app collects a whole lot of data (by capturing it live or by downloading from a third party, or import from email), and you want to do a whole ton of reports and visualisations inside your app. .

To do lots of computing inside your smartphone is a very challenging job, as I have experienced myself in processing video data. A small trick is to use your GPU, which could be 10-100 times faster than your CPU in calculating floating point.

Setting up a GPU shader and calculation could be a huge task for anybody who are not familiar with OpenGL. So, this excellent GPGPU library could help you a lot, all you need to do is to change the calculation inside the vsh file. I am planning to make it even easier for anybody to use in the near future.

Top 5 Energy Saving Apps for Small Businesses

Software applications and resources that can allow business owners to reduce their overhead and operational costs may be a resource that few startups can afford to do without. Resources that can allow you to more easily and effectively track your electric consumption, curb demand for costly utilities or help you find the best , electric companies in Hamilton Texas, and surrounding regions have many benefits for smaller businesses and startups that are seeking to reduce the cost of their energy usage. Finding and making use of the best apps can ensure that your business is able to make use of more competitive utility rates and reduce costly waste and excessive energy consumption.

Choosing the Right Energy Provider

Paying too much for any resource could be a serious misstep, one that a business operating with fixed or limited financial resources may not be able to make. Sorting through your options and comparing electric providers and utility services in an effort to find the most cost-effective options and the greatest values can be a daunting task when you lack for the right resources to aid you in your search. Applications able to provide real time pricing information and easier navigation of the providers you have to choose from can ensure you are able to find the most beneficial options for your electrical service.

Tracking Consumption for Greater Energy Efficiency

Having to keep tabs on the operational habits and costs of powering your business is a labor intensive task, one that may rob yourself and staff of energy that would be better spent on more important matters. Software that can speed up or automate the process will ensure that you are able to stay informed about the level and cost of power consumption your operation is resulting in. Superior information may be required in order to more effectively and successfully curb your consumption.

Reducing Electric Waste
Fixtures and appliances that are not as efficient as they could be, devices that are being powered when not required and other habits and situations that could be costing you more than you might realize are all situations that can be more effectively remedied when you have access to the right information. Tracking your electrical consumption with a software application can allow you to target and identify any aspect of your operations or working process that could be made more efficient. Using less energy will reduce your utility bills and overhead expenses and may allow your business to become more profitable as a result.

Finding the Best Resources

With a number of applications to choose from, finding and selecting the best of them could seem like quite the challenge. Conducting a little research and finding the applications and software resources that will be of most benefit for your business will ensure that you do not lack for a superior resource. The tools you need to ensure your business is able to be made more efficient and less costly could make a big impact on the results and success of your efforts.

Windows Phone Potential?

I normally hear from Windows developer to say that their Windows market share is much bigger than the total of iOS and Android together. And the sales of Windows 8 has bypassed all the sales of iOS and Android from the beginning to now.

Windows Phone 8

Windows Phone 8

It is quite unfair to compare the whole Windows 8 with iOS or Android. And if we do take that demand into PCs and laptops, then why the hell we do not compare the supply side? It is very clear that if Windows 8 could be a shared platform between PCs, tablets and phones, then all the old software, all the old games would have beome compatible to the Windows 8 system in the short amount of time. And many apps for tablets and phones would be quite different than the ones in PC. No, I don’t mean technology, I am talking about the business model, the purpose of the software.

I don’t mean that iOS and Android is a better market than Windows Phone for indie business. These markets have become very competitive and continue being so. You either have to figure out a market niche or be very lucky.

Openess v.s closeness

Open v.s close

Open v.s close

I have a long support for open source system, the open standard, a more open and shared data in the web. 3 years ago, I thought that the win of Android is obvious and the reality has proven me right. I was confident with my knowledge and guessing until I read a long fan boy of Apple. Yes, he is a fan boy of Apple, and the article has really favoured Apple. But he made an important point great product wins. Not the great product in terms of technology, nor in terms of openess. It is a great product in users’ minds, either by its value provision or by good marketing.

By opening the platform, Android opens the door for more hardware suppliers. But that openess means nothing if the operating system sucks, it means nothing if the compatibility and the user interface are not good. Looking at Linux and all the free open source operating system. They are more opened, easier to adopt into the hardware by the suppliers, but they suck. Either the UI, the lack of applications and features, but they suck.

I think this article gives a very good point of view as well.

Domain + Tech + Design

 

 

 

 

 

 

 

 

We can see the new hype about education, health care or photography. I believe that in this new era of technology startup, it is time that we are innovating in each industry, to transform the industry into a better format. We have technology there, we have social network there, we have better design there, in iOS or Android platform. The technology industry have gone quite far comparing to other industries like education, healthcare, design, news, food, lifestyle.

We have seen innovations in Education with Coursera, Ucademy, Khan Academy… We have seen more innovations is coming in Healthcare with Misfit Wearable…News is already transformed with iPad, iPhone, social network and how we share news together….

I agree with the article:

The only way out of this innovation gridlock is an expansion in founding team diversity. I believe the missing piece from the DNA in the founding teams of transformational companies is now the domain expert, who has deep insight into the industry they are trying to disrupt.

I think we will see more innovations in each industry, rather than just technology improvement like the last few decades with Microsoft, Google, Facebook, Apple and Amazon.

In the meantime, our project team in CMU has spent a significant amount of time to produce a quite good report on the Education Innovation.

http://blogs.hbr.org/cs/assets_c/2012/07/map-of-value-creation-thumb-580×482-1971.jpg

Me in RMIT and Vietnamese Newspaper

You can read the Vietnamese version here



Many software engineers and IT professionals dream of developing a ‘killer App’ for popular products like the iPhone, which will make them rich. Other people dream of one day having a book published.


Not many achieve either – and even fewer do so in their early 20s. But Vo Duy Khang (formerly student 3184092), an alumnus of RMIT Vietnam’s Bachelor of Information Technology program, has hit the jackpot with success in both of these areas – and now has the makings of a successful business spanning both Vietnam and Australia.


Khang graduated from RMIT Vietnam in November 2010 and travelled to Adelaide, Australia, where he is now completing a Master of Information Technology with Carnegie Mellon University, under a full scholarship.


With the benefit of the scholarship, Khang has been freed up to apply his own financial resources fully to get a small business off the ground while he also continues his studies.


His hard work and talent have been recognised by US publisher Apress, which has just decided to publish a book by Khang on how to build better iPhone applications. Khang’s book, Pro iOS Apps Performance Optimization, fills a need in the market for more practical guidance in this booming area of consumer technology.


Khang’s creativity and expertise has also been applied to a new business start-up in this field which already has five people on staff in Australia. Khang has been visiting Vietnam in the past month seeking further talent from Vietnam to join his operation.


Almost all his development team to date are RMIT students or graduates.


“They speak English well, and they all have a good understanding of what is needed,” Khang says.


According to Khang, the basis of a good user experience of any iPhone or iPad App is good performance. There is enormous potential in helping social networking applications such as Facebook to provide a better user experience by moving data in a quicker and smarter way over the net.


Apress has been impressed by his thinking in this area, as shown on his own website and as shared amongst the online community overseas.


One of Khang’s mentors has been Barend Scholtus, Academic Services Manager for the Bachelor of IT program, and the two continue to discuss shared interests regularly.


“We hope – in fact we are pretty sure – that Khang’s learning experiences at RMIT Vietnam have made contributions to his achievements to date, and we hope the best is yet to come.”



 





Khang (sitting) sharing knowledge with friends in Barcamp 2011


 


Khang’s book on Amazon: http://www.amazon.com/Apps-Performance-Optimization-Professional-Apress/dp/1430237171/ref=sr_1_1?ie=UTF8&qid=1321662306&sr=8-1


Facebook page: http://www.facebook.com/vodkhang
Contact info: Phone +61 478146872 
Email: vodkhang@gmail.com


 

My New Book – 21 years old achievement

21 years old, I got my first book released, I was so excited. Buy it here

Pro iOS Apps Performance Optimization

Pro iOS Apps Performance Optimization

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Today’s iPhone and iPad apps developers are often running into the need to refine, improve and optimize their apps performances. As more complex apps can be created, it is even more important for developers to deal with this critical issue.

Pro iOS Apps Performance Tuning and Optimization covers many common but difficult problems when tuning and optimizing performance for iPhone and iPad apps and how to resolve these problems efficiently. This book gives you the following:

  • Basic knowledge on common problems in iPhone apps
  • Advanced knowledge over data structure, algorithms, multithreading, and network data in iPhone apps
  • Comparison with problems and solutions for Android and Windows Phone apps

After reading this must-have book, you’ll be ready to make the most of the processing power of the iPhone with your apps performance optimization know-how.

 

What you’ll learn

  • Benchmark your apps using emulators and real device tests
  • Increase and optimize UITableView performance in your iOS apps
  • Increase your app performance using image and data caching techniques
  • Tune your apps using algorithms and data structures
  • Improve your parallel data access using multithreading techniques
  • Optimize memory usage for increased battery life and better apps performance
  • Use native C code to address memory leaks or EXEC_BAD_ACCESS