| 11 from IBM: gprof, eCos, PPC970, Power5, CBE, UML 2.0... |
Apr. 07, 2006
IBM has published the following new technical articles, tutorials, and downloads on its DeveloperWorks website. They cover a range of interesting (though not necessarily embedded) technical topics, primarily related to Linux and open source system development. Some require free registration. Enjoy . . . !
- Speed your code with the GNU Profiler -- Improving the performance of your applications is rarely a wasted effort, but it's not always clear which functions the program is spending most of its execution time on. Learn how to pinpoint performance bottlenecks using gprof for both user-space and system calls on Linux.
- Porting a Screen-Management Utility to eCos -- See the process of porting the Berkeley curses library from UNIX to eCos, picking up a few fragments of the Berkeley C library extensions along the way -- and learn about some general issues of porting from UNIX to eCos.
- Tuning the CPC925 Memory Controller -- Known as the U3H Northbridge to Apple users; the IBM CPC925 North Bridge acts as a bridge between the processor, system memory, and external peripherals. Correctly tuning the memory controller of your IBM CPC925 can mean the difference between a reliable development system and one plagued by memory errors.
- CPI Analysis on POWER5 -- Cycles per instruction (CPI) is the measurement for analyzing the performance of a workload. This article begins a short series on workload performance analysis on Power Architecture systems. Part 1 introduces the CPU feature set and a variety of useful tools for collecting data.
- Make the most of SIMD when Compiling on the Cell BE -- Third in the series, this tutorial discusses the compiler issues in optimizing code to run efficiently on SIMD-capable processors. In particular, it shows how to optimize code that must run both on the VMX SIMD engine of the PowerPC core of the Cell Broadband Engine (Cell BE) processor, and also on the SIMD-only Synergistic Processor Elements (SPEs).
- Upgrade your Cell BE SDK Components -- Download new and improved Cell Broadband Engine SDK components -- the Full-System Simulator, the Software Sample and Library Source Code, and the XL C Alpha Edition compiler. Try out the latest Watson Sparse Matrix Package with a new symmetric indefinite solver with diagonal pivoting and more.
- Getting a feel for the Spring bean factory and Struts -- This articles provides an introduction to Developing J2EE applicatio with the Spring Framework and about how to integrate Spring and Struts. It cannot cover all the features -- or even majority of the features that Spring has to offer. The objective is to get you comfortable enough with the basics so that you can continue to explore Spring on your own.
- Create and transform a UML 2.0 model into code -- Rational Software Architect virtually teems with visual tools to handle a number of development tasks. Of most interest to developers are UML modeling, design patterns, and UML-to-code transformations. After completing this tutorial, you will know how to create a UML model, apply a design pattern to that model, and, finally, transform the abstract model into actual code.
- Paint 3-D images with PHP -- PHP Extension and Application Repository (PEAR) has allowed developers to take PHP in new and interesting directions. PEAR's Image_3D package is an object-oriented interface for creating three-dimensional (3-D) graphics in a variety of formats, including PNG and SVG, two image formats with increasing support by modern Web browsers. This tutorial show you how to use the Image_3D package and practical applications of 3-D graphics. --
- Real-time 3-D graphics across four multi-megapixel displays -- Using Xdmx and some simple configuration advice, you can set up a Linux computing environment with four monitors spread across one desktop and three laptop PCs. This is one great way to combine your available laptop and desktop computers running Linux to create one large display for enhanced fun.
- Why should I care about RSS -- What are all those little orange RSS buttons and XML buttons you see everywhere including the site your on right now? Why do you see code when you click on them? If you're interested in the answers to these questions, and are ready to find out more about why RSS so popular and what are the benefits, then take a look at this easy to understand article to learn all about RSS, including what feed readers are available and which one might fit your needs.
(Click here for further information)
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