By: Bill Buros. A new IBM Redbooks publication is now available which provides great advice on optimizing application codes for POWER7 and POWER7+ systems POWER7 and POWER7+ Optimization and Tuning Guide Chapter 1. Optimization and tuning on IBM POWER7 and IBM POWER7+ Chapter 2. The POWER7 processor Chapter 3. The POWER Hypervisor Chapter 4. AIX Chapter 5. Linux Chapter 6. Compilers and optimization tools for C, C++, and Fortran Chapter 7. Java Chapter 8. DB2 Chapter 9. WebSphere Application Server Appendix A. Analyzing malloc usage... [More]
Power7 celebrates two-year anniversary! By: Bill Buros. Ah cool. Didn't realize this! eWeek.com just published a nice quick slideshow on Power7 reaching its two-year anniversary. There are probably other references in the community, we'll have to keep our eyes open for more examples. Across the Power7 servers, Linux figures prominently in many of the success stories. Strong heritage, strong future, and Linux is in the thick of it.
New IBM XL compiler versions now available!
By: Bill Buros.
IBM has released the IBM XL C/C++ Version 12.1 and IBM XL Fortran V14.1 products for use on PowerLinux systems. IBM XL C/C++: http://www-01.ibm.com/software/awdtools/xlcpp/linux/ IBM XL Fortran: http://www-01.ibm.com/software/awdtools/fortran/xlfortran/linux/ Over on developerWorks, there are two good articles on "what's new" with these new versions. What's new with IBM XL C/C++ for AIX and Linux, Version 12.1 and What's new in IBM XL Fortran for... [More]
Exciting times for Linux and for POWER. Earlier in the week, a new POWER and Linux consortium was announced - the OpenPOWER consortium. IBM's Tom Rosamila posted his views on the SmarterPlanet blog . Open and Collaborative Development is the Future of Open Computing (I added some bold emphasis in the clipped pieces below - see the blog post for more of the details) Under the OpenPOWER initiative, IBM will license the core intellectual property for our POWER technologies to other companies... [More]
Using Autotools with the IBM SDK for Linux on POWER By: Robert MacFarlan. Autotools, also known as the GNU Build System, is a set of tools used in open source projects to solve portability issues. Tools included in the set are: GNI Autoconf, Automake, Libtool and Newlib. http://www.ibm.com/developerworks/offers/lp/demos/summary/l-autotoolslinuxonpower.html
The MiniCloud provides free access to Power® virtual machines. It allows easy access to an environment that can be configured for development, testing or migration of applications to Power. The virtual machines of MiniCloud run on PowerKVM™, which supports running a large number of virtual machines on a single scale-out Linux server. MiniCloud is hosted at State University of Campinas - Unicamp, Brazil. To request access to a VM your first need to access the MiniCloud website , read the terms and conditions of usage and fill... [More]
The IBM SDK for Linux on Power team released today the GA of the SDK 1.7.0 which now only supports x86_64 and POWER Little Endian operating systems. S upported distributions: - ppc64le: Red Hat Enterprise Linux 7.1 SUSE Linux Enterprise Server 12 Ubuntu 14.04.2 LT - x86_64: Red Hat Enterprise Linux 6.5 Red Hat Enterprise Linux 7.1 SUSE Linux Enterprise Server 12 Fedora 20 Ubuntu 14.04.2 LTS New features and changes : - Power Performance Advisor plugin:... [More]
If you are running Ubuntu, there is a cgroup hotplug issue to consider when changing SMT modes. You may need to take steps to ensure that SMT threads are being used properly, see this article for more info.
By: Jessica Erber-Stark. Mel Beckman at PowerITPro recently published a very nice overview of IBM PowerLinux systems. Mel states: "IBM’s PowerLinux brings big-iron reliability and scalability to Linux while still
providing cost-competitive, Linux-friendly, entry-level server
offerings." Check out the article " PowerLinux Pumps Up Linux Apps " on PowerITPro to get Mel's take on: Application portability to PowerLinux systems Virtualization performance advantages PowerLinux 7R2 system summary Big Data Analytics solution,... [More]
By: Wainer dos Santos Moschetta. It was released the version 0.9.5 of IBM SDK for PowerLinux with some significant improvements: Enhanced IBM Migration Advisor plug-in Added "ignore warnings" feature Added support for remote execution for the following plug-ins: HOT! Autotools plug-in RPM plug-in IBM Trace Analyzer plug-in New Debian/Ubuntu .deb package with x86_64 IDE client for the IBM SDK for PowerLinux The IBM SDK for PowerLinux is a free of charge offering ! You can download the version 0.9.5 here . Please visit the IBM SDK... [More]
by Rafael Folco <email@example.com> and Mikhail Medvedev <firstname.lastname@example.org> Nova Scheduler provides the RAM Weigher to weigh hosts by their RAM usage. The default behavior is to spread instances across all hosts. However, if you have nodes with different memory sizes, the scheduler will run all VMs on the large memory systems first (until the VMs per node limit exceeds), and then start choosing the other hosts. There is nothing wrong with this, but you may want to spread your VMs among all the hosts regardless... [More]
Blog: Ron Gordon, Mainline Information Systems Email: Ron.Gordon@mainline.com Title: Virtualization Options for Linux on Power Note: Linux on Power is a very dynamic environment. Be aware that technology and support changes, and will be changing very quickly, normally to the better. As soon as one finally understands the characteristics of the environment and defines a plan for implementation, it may be that before you can execute your plan, capabilities may have improved to the better and... [More]
Over in the openSUSE realm, the "Open Build Service" (OBS) recently was updated with new IBM PowerLinux 7R2 servers. A recent news update was posted on news.opensuse.org . "To ensure continued Power and Linux compatibility going forward, IBM and SUSE recently partnered to add more build capability to the openSUSE Build Service. The openSUSE Build Service is a service which offers an automatic, consistent, and reproducible way to build and distribute Linux packages from source code to multiple... [More]
by Rafael Folco <email@example.com>, OpenStack CI Engineer This blog post shows in simple steps how to configure the IBM Storwize to use in OpenStack Cinder and Glance. Cinder Cinder uses the storwize driver to connect to the storage and create volumes in a pre-configured pool. The configuration for Cinder is straight forward. An example of storwize settings in cinder.conf follows: volume_driver=cinder.volume.drivers.ibm.storwize_svc.StorwizeSVCDriver san_ip=192.168.0.1 san_login=<admin_user>... [More]
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 5.0 series is now available, and it includes the following: The GNU C Library provides an optimized version of sched_getcpu . A new version of itrace tool that supports trace controls. Fixes for Intel Threading Build Blocks headers. Binutils fixes the following issues:
Link -tim e op timi zati on r... [More]