I would like to announce a draft of a PowerKVM Redbook. PowerKVM is an open source hypervisor based on the POWER8™ technology. On the following document, you will learn how to set up and configure this hypervisor. It will also cover how to control KVM from the console and WebUI interface. http://www.redbooks.ibm.com/Redbooks.nsf/RedpieceAbstracts/sg248231.html?Open IBM Redbooks are great technical collateral intended to quickly bring you up to speed with the latest technologies, offerings, and best practices!
By: Rafael Folco OpenStack uses virtio driver as default model for both networking and disk devices. Virtio takes advantage of paravirtualization and enables guests to get high performance network and disk operations. However, OpenStack also supports some alternate options to enable custom models for KVM/Qemu hypervisor. In order to use custom models, KVM users can change the image_meta properties and select the desired driver. IBM PowerKVM provides support to ibmveth and ibmvscsi drivers as an alternative to the default virtio driver.... [More]
By: Tulio Magno Quites Machado Filho. The first release of series 8.0 is now available. This release provides many bugfixes and package updates, including: GCC 4.9.2 GDB 7.8 Python 3.4.1 GCC fixes for:
Avoid discarding the file name information when using -imacros . Miscompile with K&R-style function definition at -O0 . Fix for Valgrind itrace not tracing the first call to library functions. Start distributing big endian and little endian packages in the same release. Due to the last item, you will notice 3 cross compiler packages:... [More]
I am pleased to announce that several major deep learning frameworks are now available on the Power platform, as "distros" (distributions) that are easily installable using the Ubuntu system installer. Deep learning, or the use of multi-layer neural networks, has revolutionized speech recognition, natural language processing, and computer vision, and continues to to revolutionize IT due to availability of rich data sets, new methods for accelerating neural network training and extremely fast hardware with GPU accelerators. Deep... [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: Bill Buros. This morning we got into a good discussion on what simple things that we check on a new system or partition for Power Linux.
The list was easy. How many cores? what SMT mode are the cores running in? how fast are the cores running? how much memory is available? how is the memory balanced? and is any of the memory tied up in Hugepages? So we wrote a quick script here to get that information and thought we'd post that here. Edit'ed Aug 3rd 2012: See a new article " Setup and understand your system " for a more... [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: Jeff Scheel. I hope you "Think" our Power Linux community is starting to come together. It's taking some time to bring the pieces together, but we're making progress. Since Rome wasn't built in a day, hopefully you'll understand if the Think Power Linux community takes a couple months. Speaking of Rome and building, did you know that IBM's effort with Power Linux is over 10 years old. Yes, I was one of the original team members focused on putting Linux on the iSeries. That mission grew into the ppc64 kernel and glibc that... [More]
Jason Furmanek has published a nice article on his experiences and insights in setting up a NIM server (more typically done with AIX installations..) to install RHEL 6 on a Power system. If you're an AIX customer - this could be very beneficial.... Questions are welcome on the forums. This page emerged from an ongoing discussion on the forums. From his article.. The process of booting and installing a Linux server from the network is valuable for many reasons. It is efficient,... [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]
Everyone who has had experience with SLES 12 and RHEL 7.1 and later versions has seen that the bootloader used on Linux on POWER is now GRUB2. This was a change as compared to the mix of Yaboot and LILO used by the previous versions, namely up to SLES 11 SP4 and RHEL 7.0. This change affects the way input parameters to the bootloader are given; for instance the location of the kernel or the initrd or initramfs, or several other inputs, that usually do not require intervention of the non-advanced user, except when launching a brand-new... [More]
By: Jenifer Hopper This article discusses some basic XML tuning tips for PowerKVM guests. It helps new users get started with editing guest XML definitions, and walks through some simple tuning examples. The article covers various options to tune the guest disk, network, cpu, and memory. It also includes some example guest resource pinning configurations for different scenarios. Applying these tips may help improve application performance by ensuring your guest is configured properly and optimized for the KVM environment.
By: Jeff Scheel. Life as the PowerLinux Chief Architect involves answering many questions, some of which need lengthy explanations. One such example is whether PowerLinux is a Power operating system or a Linux operating system. In some ways this discussion reminds me of the campfire scene from the 1986 movie Stand by Me where the boys deeply contemplate Disney characters. Essentially the discussion went this way: Mickey's a mouse, Donald's a duck, Pluto's a dog, what is Goofy? The discussion about PowerLinux generally follows similar flow:... [More]
I am excited to announce the availability of the next generation of the Power Architecture. The next generation of the Power Architecture heralds a new era for systems. The new Power Instruction Set Architecture 3.0 (Power ISA 3.0) marks the first generation of architecture developed and released since the creation of the OpenPOWER Foundation, and sustains the growth of OpenPOWER as an open ecosystem built around collaborative innovation. Marking this new era, the new Power 3.0 architecture reflects the values of our open ecosystem by... [More]
By Jeff Scheel Everyone remembers Cheers , the 1980s television sitcom that included the well-dressed, but slightly funny looking Norm who always entered the bar as everyone called out "Norm!" I suspect that most of us can remember several lines from the theme song, "...Where everybody knows your name, And they're always glad you came..." But, If you can't remember the them, I know that ALL of us who watched the show want to be Norm and have our name called out as we enter the room. Enterprise 2013 was my... [More]