By: Breno Leitão.
This tutorial explains how to create a RAID device on PowerLinux machines using an array of disks. This step by step tutorial includes identifying the disks, formatting them, combining them in a RAID array, creating a partition and, finally, creating a file system on this partition.
The PowerLinux machines support a RAID (Redundant Array of Independent Disks) card. A RAID card is a device that combines a set of physical disks into a logical... [More]
By: Bill Buros.
In November 2012, IBM launched a new POWER7+ enabled IBM Flex System p260 compute node. For the marketing and system details, see the IBM PureFlex Systems page . Here on the technical community, we wanted to take a minute to reference the "formal benchmark publishes" that are run and submitted to organizations like SPEC.org. Performance proof points like published benchmarks are a great way to keep score of performance improvements, not only with the hardware systems, but as in our case, the software... [More]
By: Beth Taylor and Walt Madden. Several previous blog posts have told of the
advantages of IBM ®
Advance Toolchain for PowerLinux for application performance analysis on IBM
Power Systems ™
servers. Likewise, you've heard about
IBM Software Development Kit for PowerLinux ™ , which combines C/C++ source
development with the Advance Toolchain and classic Linux debugging and
performance analysis tools like OProfile. Recently, the IBM InfoSphere Streams development
team has had the positive experience to give credit to these claims... [More]
By: Wainer dos Santos Moschetta. Want to watch some nice demonstration videos of PowerLinux SDK 1.2 new features? There were published two demonstration videos in DeveloperWorks as follows: 1. Introduction to the Cycles Per Instruction analysis tool. Watch here the demo starring CPI Tool! 2. Introduction to the Migration Advisor quick fixes. Watch here the demo starring Migration Advisor! The complete demo series about the IBM SDK for PowerLinux can be found here . More videos to be come...stay tuned in!
By: Rafael Folco. Practical experiences with setting up a cluster
I recently have had the opportunity to work with the IBM InfoSphere BigInsights product on PowerLinux. From these experiences, I created a wiki page which describes some hints and tips on setting up a cluster for BigInsights. The BigInsights product provides for serious hadoop-based processing and is available on the PowerLinux base. If you have questions on taking advantage of BigInsights and hadoop on Power systems, ask a question on the PowerLinux message... [More]
By: Bill Buros. If you've updated to the most recent RHEL 6.3, you might be seeing issues with CPU utilization being reported to the end users.
# uname -r 2.6.32-279.el6.ppc64 With the kernel here, if you run "top" on an idle system, it may report clearly inaccurate CPU utilization metrics, as in the idle system below. 66% kernel time on an idle system is not accurate.
# top top - 16:05:04 up 1 day, 39 min, 2 users, load average: 0.00, 0.00, 0.00 Tasks: 1167 total, 1 running, 1166 sleeping, 0 stopped, 0... [More]
By: Seth Jennings. The IBM PowerLinux Tools Repository allows system administrators the use the standard Linux package management tools in RHEL (yum) and SLES (zypper) to deploy and maintain IBM tools on their Power servers. A list of the tools provided in the repository can be found here . Below is a link to a video tutorial that demonstrates the process of obtaining the installation RPM from the PowerLinux Tools Repository website, configuring the repository, and installing the appropriate meta-package on a Power server running RHEL... [More]
By: Rodrigo F raxino A raujo. Many software engineering activities rely on the automated support afforded by tools. In order to maximize their benefits, they are often retrofitted to development environments that enable them to capitalize on facilities provided by compilers, debuggers, and profilers. In this context, focusing on the integration of a set of mainstream C/C++ development tools (Valgrind, OProfile, Autotools, perf, among others) along with several in-house IBM ones (Advance Toolchain, FDPR, and others), we have used Eclipse as a... [More]
By: Beth Taylor. Take a
look at the Linux Information Center for Installing Linux with the IBM Installation Toolkit for PowerLinux , http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/topic/liaan/powerpack.htm.
IBM Installation Toolkit for PowerLinux version 5.2 The IBM®
Installation Toolkit for PowerLinux speeds up the installation of Linux, and
gives you access to the IBM value-added software necessary to fully use the
capabilities of the Power® platform. You
can use the IBM Installation Toolkit on PowerLinux... [More]
By: Beth Taylor. New to the Linux Information Center is Developing software using the IBM Software Development Kit for PowerLinux , http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/topic/liaal/iplsdkmain.htm. About IBM Software Development Kit for PowerLinux The IBM® Software Development Kit for PowerLinux is a free, Eclipse-based Integrated Development Environment (IDE). The IBM SDK for PowerLinux integrates C/C++ source development with the IBM Advance Toolchain for PowerLinux and classic Linux debugging and performance analysis... [More]
By: Bill Buros. Continuing our journey into benchmarks, we recently were working on the SPECcpu2006 set of benchmarks again, and returned to look at some of the dependent products which we build and run with. One of the products which we link with on Power Linux is MicroQuil's Smartheap library. This is a run-time library which can be purchased from MicroQuil. One of the benchmark components of the SPECcpu2006 suite - xalancbmk - is a classic example of a questionable choice as a system and compiler measurement benchmark. The... [More]
By: Jeff Scheel. Two weeks ago, I blogged about my thoughts after attending Power Technical University in Miami. This week, I bring you my thoughts from our event in Copenhagen, Denmark. It never ceases to amaze me what I learn at these events. While the topics I presented were identical to the session in Miami two weeks ago, I still learned a bundle from the Power Linux customers who attended in Copenhagen. Here are my thoughts from this week: Again, I took a significant number of business cards to Copenhagen and still ran out before the... [More]
By: Jeff Scheel. A couple weeks ago, someone sent me a link from the developerWorks PowerVM forum about installing Debian on a POWER7 box. The post was created by Tux11 (Dennis Schneck) who graciously agreed to create a developerWorks wiki. Here is the new Debian 6 on Power7 LPAR wiki. I strongly encourage that if you have interest, if you're running Debian today on POWER, or if you would like to doing so in the future, please help Dennis and the community keep this wiki alive and accurate. I cannot THANK him enough for his efforts in... [More]
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]
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]