By: Jessica Erber-stark. Check out the Linux Information Center for new information about Improving performance with Advance Toolchain 4.0 About the Advance Toolchain : The Advance Toolchain provides early and easy access to
libraries and the latest compiler technologies for Linux distributions. Over time, these libraries
and latest compiler technologies are integrated into the shipping
distributions. However, the Advance Toolchain contains the latest
tested and supported GNU Compiler Collection (GCC) compiler versions,
tailored for... [More]
By: Jeff Scheel. Chuck Bryan, PowerLinux Strategy and Business Development, and I, Jeff Scheel, PowerLinux Chief Architect will be at the IBM System Technical University in Birmingham, UK on May 8-11. Topics we'll be covering include: PowerLinux Trends and Directions Introduction to the PowerLinux Software Development Toolkit Introducing the PowerLinux family of Linux only POWER7 servers and PowerVM for PowerLinux How and why are customers using Power Systems running Linux instead of x86 servers and VMware Please come and see our sessions if... [More]
By Jeff Scheel
For the past several years, PowerLinux has been very active on building a "social" media program. During this time, we have learned lots and have not always been successful. However, one of the key questions I realize that we have not properly explained is our strategy. So, I thought I would take the time to explain some key thoughts.
Point #1: The PowerLinux social media program (online presence) is anchored here in developerWorks (dW). The... [More]
By: Carlos Seo. The IBM Advance Toolchain for PowerLinux is a set of open source
development tools and runtime libraries that allow users to take leading
edge advantage of IBM's latest POWER hardware features on Linux. A new
update release is now available, and it includes the following:
Time zone automatically set to system's time zone. New advance-toolchain-at6.0-selinux rpm, which sets the correct labels for key files so the Advance Toolchain works when SELinux is enabled. New ldconfig wrapper (installed in /usr/sbin/) that wraps... [More]
By: Tiago Sturmer Daitx. Great news from the OpenJDK land! The OpenJDK PowerPC/AIX port , lead by Volker Simonis, has just been endorsed by Mikael Vidstedt and funded by SAP, IBM, and Oracle.
What does that mean? JEP is an acronym for " JDK Enhancement-Proposal & Roadmap Process ". According to it "endorsement" means "Accepted for inclusion in the Roadmap by the OpenJDK Lead". So the PowerPC/AIX Port is now officially in the long-term Roadmap for JDK Releases.... [More]
By: Carlos Seo. The IBM Advance Toolchain for PowerLinux is a set of open source development tools and runtime libraries which allows users to take leading edge advantage of IBM's latest POWER hardware features on Linux. A new release is now available, and it features: Performance improvements for tcmalloc Bug fixes for DFP support in Valgrind For download links, more information and documentation, please refer to our official documentation page . Please let us know if you have any questions about this release.
By: Bill Buros. As several of us (expanding quickly into many of us) are involved in kicking off this new Think Power Linux community, Jeff Scheel has mentioned in an earlier post that he'd like to get more "experts" listed here on Think Power Linux. Working in the IBM Linux Technology Center is a fascinating and interesting experience in the industry. We work daily with many of the best programmers in the world on Power systems, working on today's servers, tuning, optimizing, improving the software stacks specifically for the... [More]
Presentations from the popular Linux on Power for ISVs Technical Symposium that was held at IBM Hursley, UK last week are now available in the Folders section of the PowerLinux community (click on the Folders tab in the Files view or just use this short link http://ibm.biz/BdRrdm ). The event was hugely successful with the theatre jam-packed with over 60 attendees including 47 ISVs and technical specialists from IBM and IBM's distributors, Avnet, Arrow and Azlan ISI.
Key note was from Jeff Scheel , who was excellent as always,... [More]
By: Jessica Erber-Stark.
As part of the June 10, 2014 POWER8 GA, several new documentation resources have been published. Use these documents to understand the ins-and-outs of running PowerKVM on your Linux on Power system.
IBM PowerKVM concepts
Learn the basics about PowerKVM, including how the important terminology differs from traditional Power virtualization (PowerVM). This topic also discusses the suggested system limits.
CRUX PPC 3.0 is now available. Toolchain ships with Graphite support (PPL backend) and also with LTO (Link Time Optimization). CRUX PPC 3.0 is released as two different archives: 32bit and 64bit. The 32bit version is based on a single lib toolchain instead the 64bit one comes with a multilib toolchain. These two versions share the same ports tree.
We can only provide packages and trees to chroot, no more install media or images.
See the download page!
GNU/Linux on Power Architecture
CRUX PPC -... [More]
By: Bill Buros. The IBM Flex System™ p260 and p460 Compute Nodes are servers based on IBM® POWER® architecture technologies. These compute nodes run in IBM Flex System Enterprise Chassis units to provide a high-density, high-performance compute node environment, using advanced processing technology. The nodes support IBM AIX, IBM i, and Linux operating environments and are designed to run a wide variety of workloads. The p260 is half-wide compute nodes with two POWER7 processors, and the p460 is a full-wide compute node with four POWER7... [More]
By: Tulio Magno Quites Machado Filho.
The IBM Advance Toolchain for PowerLinux is a set of open source development tools and runtime libraries that allow users to take leading edge advantage of IBM's latest POWER hardware features on Linux.
A new update release for the 7.0 series is now available, and it includes the following:
Valgrind fixes for the following issues:
Fix for "Serious error when reading debug info".
Add support for [lf]setxattr .
Fix unhandled... [More]
By: Maynard Johnson and Beth Taylor. Finding performance bottlenecks in applications that you develop can be a daunting task. But with the right tools and a little guidance, it's easier than you might think. OProfile is a performance analysis tool set for Linux systems. A new collection of topics has been published in the Linux for IBM Systems Information Center to help application developers get started with OProfile on Power Systems™ servers running Linux. Getting started with OProfile on PowerLinux introduces the new operf... [More]
This entry by Paul McKenney is the eleventh in a series. You can find the rest of the series in Paul McKenney's Journal .
The computing field has had its share of holy wars over the decade, with one famous 1970s/1980s holy war regarding endianness .
Of course, endianness within a system refers to the mapping between numerical values and character strings, so that for little-endian the numerical value 0x1 results in the first character of the corresponding string being... [More]
By: Jeff Scheel. In a previous blog entry titled What does IBM really mean when it says "Power Linux"? , I attempted to explain that by "Power Linux" we mean all Linux distributions which run on Power Systems, i.e. the various versions of SUSE Linux Enterprise Server and Red Hat Enterprise Linux for POWER. If you're following the recent PowerLinux announcement closely, you'll notice that "Power Linux" has now become "PowerLinux". Perhaps you might think we have a typo in our announcement, but the... [More]