| Eight from IBM: 64-bit Linux, Cell, Ajax, "nice", Linux booting... |
Apr. 21, 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 . . . !
- Porting to 64-bit Linux -- Linux was one of the first cross-platform operating systems to use 64-bit processors, and now 64-bit systems are becoming commonplace in servers and desktops. Many developers are now facing the need to port applications from 32-bit to 64-bit environments. With the introduction of Intel Itanium and other 64-bit processors, making software 64-bit-ready has become increasingly important.
- A 5-Minute Talk on The Cell BE Memory Model -- The Cell BE processor has both a PowerPC-compliant core and eight SPUs that can access global memory, for a total of nine memory management units. Memory can be accessed through DMA or memory-mapped I/O. It can also be skipped altogether for SPU to SPU transfers. Get the details from Nutter and Aguilar in this Q&A session.
- Cycle-Accurate Simulation for Fun and Profit -- This article describes the SPU pipeline configuration, performance metric, and trace facilities that are available in the IBM Full-System Simulator for the Cell BE platform. Find out the exact cycle where the SPE stalls, or identify a poor choice of branch predictions, using pipeline tracing in the Cell BE simulator.
- AIX Clusters Add More Storage Support -- Download the latest Cell Broadband Engine XL C Alpha Edition's C++ PPE-only compiler. Check out the latest storage support upgrades for the HACMP for AIX 5L. Test a new toolkit that makes performing a printed circuit board materials characterization a snap.
- Migrate a JSP-Eclipse apps to lightweight Ajax -- This tutorial shows you how to move an application from a conventional JSP, Eclipse design to one based on Ajax (Asynchronous JavaScript and XML) technology. It will guide you through the development of a small human-resources application, first using conventional JavaServer Pages (JSP) and Eclipse, and then migrating it to a highly interactive solution using Ajax.
- Performance Tuning UNIX Systems -- Be "nice" to your computers and examine some general guidelines for tuning server performance. A computer is like an employee who does tasks for you -- it's a good idea to keep from overburdening them. Keep this from happening by using the UNIX "nice" command.
- LPI Exam 102: Boot, Initialization, Shutdown, and Runlevels -- By the end of this tutorial, you will know guide a system through booting, set kernel parameters, and shut down or reboot a system. The tutorial is organized according to the specific objectives of the LPI exam for this topic. If you're studying for certification -- or simply building a solid foundation in Linux systems administration -- you will be ready to proceed to the next tutorial in the exam 102 series.
- Computer Science as a Major and as a Career -- IBM DeveloperWorks is running an interesting Q&A with Director of IBM's Academic Initiative, Gina Poole. In the article she talks specifically about taking computer science as a major and ultimately as a career. From the article: 'There are a couple of reasons [for the decline in science and engineering degrees]: one is a myth, believed by parents, students, and high school guidance counselors, that computer science and engineering jobs are all being outsourced to China and India. This is not true. The percentage of the total number of jobs in this space is quite small -- less than 5 percent. According to a government study, the voluntary attrition in the U.S. has outpaced the number of outsourced jobs to emerging nations. Further, for every job outsourced from the U.S., nine new jobs are actually created in the U.S.
(Click here for further information)
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Data Management for Real-Time Distributed Systems
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7 Advantages of D2D Backup
For decades, tape has been the backup medium of choice. But, now, disk-to-disk (D2D) backup is gaining in favor. Learn why you should make the move in this whitepaper.
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