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: 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: 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: 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]
In the category of learning something new on a regular basis, over the last week I discovered some commands on Linux running on Power systems which were new to me. Turns out "lparstat" has been implemented, and a colleague here in the LTC pointed out two commands "lscpu" and "lsblk" which I hadn't seen before.
Trying these out on a system with POWER7,
# cat /etc/*release*
SUSE Linux Enterprise Server 11 (ppc64)
VERSION = 11
PATCHLEVEL = 2
# rpm -qf `which... [More]
By: Breno Leitão
On new IBM® Power Systems™ servers running Linux, a set of the PCIe slots support a unique feature called 64-bit Direct Memory Access (DMA) , which improves I/O operations.
A new article was written explaining this feature and how to take advantage of it. Moreover, performance data is discussed throughout the article, as comparing the bandwidth and latency improvement provided by this feature when using a 10Gbps Network adapter on a PowerLinux 7R2 machine.
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: Ralph Nissler. If your company is an IBM Business Partner or if you are an IBM employee, this might interest you. No-cost remote access to POWER5, POWER6 and POWER7 will also still be provided:
Today the Virtual Loaner Program (VLP) is announcing support for IBM's latest Power Systems hardware using the POWER7+ processor. Standard reservations can now be processed on systems using the new POWER7+ processor.
In addition, several OS images have been updated to the latest OS support levels. Currently provided OSs... [More]
By: Jose Ricardo Ziviani.
About IBM Installation Toolkit for PowerLinux version 5.4
The IBM® Installation Toolkit for PowerLinux is an optional tool that 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 servers, including IBM PowerLinux™ and IBM Power Systems™ servers running Linux.
New in IBM... [More]
By: Steve Dobbelstein.
On February 22, 2013, IBM® published a new SPECjEnterprise®2010 result on a two socket system. The result was achieved on the new IBM PowerLinux™ 7R2 system using IBM WebSphere® Application Server v8.5 and IBM DB2® 10.1 running on Red Hat® Enterprise Linux® release 6.4. The Linux Technology Center (LTC) team, the WebSphere team, the Java team, and the DB2 team all worked together to analyze and tune the performance of the... [More]
By Mauricio Oliveira. Remarkable Java performance improvements are being seen on the latest IBM Power Systems featuring POWER7+ processors which have significantly bigger, 10MB L3 caches associated with each core. A Java workload call ed SPE Cjbb 200 5 ha s run-time characteristics which benefit greatly from that larger L3 cache. Comparisons of recent external publishes with the workload compared to earlier POWER7 based publishes show how well Java workloads like this can run on the newer POWER7+ systems.
A new... [More]
By: Kersten Richter. In the PowerLinux world where the installation choices are seemingly endless, a clear path for installing Linux on a PowerLinux server can be somewhat difficult to find. In late January, Steve Champagne and I (Kersten Richter) traveled to Rochester, Minnesota for our own installation experience. We received an IBM PowerLinux 7R2 (8246-L2C) still in the shipping box. We spent several days exploring various installation scenarios and, based on our experiences, have recently published several resources to use for... [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: Fixed package requirements on Fedora 18. An optimized version of gettimeofday provided by the GNU C Library. A TCMalloc fix for deadlocks when calling fork() . OProfile fixes for the following issues: operf does not properly... [More]
By Rafael Folco From the Linux Technology Center, a team focused on Power I/O Performance just released a performance report with recommendations and basic performance characteristics of the ConnectX EN 10GbE adapter for Power Systems servers running Linux. This adapter is a popular and common dual-port 10Gb Ethernet adapter for IBM's Power systems. The report covers the basic features of the adapter and driver, provides some example performance results with suggestions on how to validate the results yourself with a workload called... [More]