By: Jenifer Hopper
Are you interested in better understanding memory access performance? A new article, Untangling memory access measurements - memory latency explains how to use an example benchmark called lat_mem_rd to measure memory read latency on IBM® Power Systems™ servers running Linux.
This article takes a practical approach to measuring memory latency performance, from understanding initial results to moving on to examining the effects of more... [More]
By: Anirban Chatterjee.
Last year, our research team published a research paper showing how a 10-node Hadoop cluster of IBM PowerLinux 7R2 servers could sort through a terabyte of data in less than 9 minutes. At the time, this beat the best known result achieved with a comparable cluster composed of x86 nodes by over a factor of two.
The team has not been standing still, however. With the launch in February of our new 7R2s that included enhanced POWER7+ processors, the team has pushed the envelope even further... [More]
By: Steve Munroe .
PowerLinux is Linux, one of several hardware platforms that Linux supports. Other Linux platforms include S390, ARM, Intel IA32 and x86_64, and a wide variety of the special purpose or embedded use processors.
When I work with customers and independent software developers, this concept of being the same (Linux is Linux) and simultaneously different (platform) can be confusing. Some want to be reassured that PowerLinux is “standard Linux”; to that, the short emphatic answer is yes .... [More]
By: Tulio Magno Quites Machado Filho
The IBM Advance Toolchain for PowerLinux repositories are moving to a new host.
Users of the IBM POWER Linux Tools Repository will be automatically moved to the new repositories and don't need to change their environments. But users that have manually configured the old repositories need to add the new ones in order to keep receiving updates of the Advance Toolchain. It isn't necessary to remove the old repositories yet.
The steps to manually setup the new repositories are described... [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 is now available, and it includes the following:
A new version of itrace tool that supports trace controls.
Fixes for Intel Threading Build Blocks headers.
A Valgrind fix for unhandled syscalls when running Valgrind on a Java 6 or 7... [More]
For an interesting cross-post from IBM DeveloperWorks, check out a recent post over in the Virtualization@IBM blog where Jean Staten Healy and others talk about KVM and Linux.
KVM: The logical choice for Linux
Many people many not realize how well security, simplicity, and common usage is baked into both Linux and KVM. KVM is both stable implementation and a technology in progress in the community. As the blog article points out:
The open source... [More]
Over on Google+ , Jeff Scheel pointed out how easy it is to get access to a partition for PowerLinux testing in the Open Source Lab at Oregon State University (OSU). Check it out!
Jeff followed that post with another open question for community developers and projects that may need a PowerLinux loaner. If the OSU lab doesn't fulfill what you are looking for, you might ask Jeff to consider a loaner for your project. Follow-up over on Google+ if you are interested.
On Power.org, the latest revision of the Power Instruction Set Architecture has been published.
In this latest update, there's a page and a half summary of the architectural changes being made. Teams are already updating Linux to take advantage of many of the new features across the various open-source communities.
The Power Architecture Advisory Council announces the public availability of Power ISA 2.07. This version is a major... [More]
Debian is one of my favorite distributions with its fast installation and light-weight deployment.
Actually, it is not officially supported on PowerLinux machines. But I knew that a ppc version exists, and I wanted to see one on action.
Recently, there was an opportunity to test Debian on Power.
Downloaded the basic image, give it a try. It was a nice experience, there were no problems with installation.
Check out the version and kernel
root@debian:~# cat... [More]
Last week, the Fedora ppc64 team announced the availability of their beta for Fedora 19. The announcement can be found at -> https://fedoraproject.org/wiki/F19_PPC_Beta_release_announcement Please take the time to read the announcement fully through as both the ppc64 and x86 announcements point out specific gotchas for Fedora users.
As for the ppc64 beta, I'd like to point out and expand on a few notable items in the beta itself:
Fedora 19 now ships with an llvmpipe enabled software... [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]
At the Red Hat Summit this week, in one of the opening keynote presentations, Arvind Krishna (the IBM General Manager for Development and Manufacturing in the IBM Systems & Technology Group), presented a good summary and strategic view of IBM's continuing contributions to open-source communities, technologies, and customer solutions.
The video of his presentation is available here
Near the end of the video (right before the 23:00 mark), Arvind makes two announcements which help demonstrate the continuing excitement and... [More]
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 Jeff Scheel
As you likely have heard, Arvind Krishna, IBM General Manager for Development and Manufacturing in the IBM Systems & Technology Group, announced that Power Systems would be supporting KVM. This is an exciting announcement for numerous reasons that I'll defer for another posting. For this blog entry, I thought I'd do some question/answer session based on common questions I've been asked in the past couple weeks. However, before I do so, I need to remind you that these are our current... [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]