More memory now available for SAP HANA on SLES 11 for POWER

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Many companies are now running their businesses with SAP HANA on IBM POWER servers. SUSE has seen huge increase in customer demand for SUSE Linux Enterprise Server for SAP Applications 11 SP4 since it became available in August 2015.

SAP HANA is an ideal workload for IBM POWER server due to the performance, reliability and scalability features provided by Power Systems servers. SAP HANA customers were able to boost their performance, save time on deployments and protect critical business operations with built-in business continuity capabilities by using POWER system with SLES for SAP Applications 11 SP4.

As our customers scaled up their SAP HANA environments, they found that they needed support for very large physical memory configurations in an LPAR (VM), beyond the 1.5TB supported by SLES 11.

Technically, this was a challenging problem. Expanding memory beyond 1.5TB would require changing the SLES 11 kernel page table structure impacting kernel ABIs. These changes could negatively affect compatibility for applications that use the kernel ABI. Retesting all existing applications would be impractical for a mature operating system like SLES 11 that first became available in 2009.

Fortunately, the product and engineering teams at SUSE were able to come up with an approach that preserved compatibility for existing SLES 11 customers while enabling very large memory support for SAP HANA on POWER. The solution was the introduction of an additional, “Bigmem” kernel.

The Bigmem kernel (kernel-bigmem) is an additional Linux kernel available for SLES for SAP Applications 11 SP4 customers through the maintenance channel. The Bigmem kernel is modified to provide support for up to 32TB on IBM POWER. Customers using SAP HANA can optionally use the BIgmem kernel to support any size memory up to 32TB. Customers who are using SLES 11 for workloads other than SAP HANA will continue to use the standard kernel. Moving forward, both kernels will be supported by SUSE on SLES for SAP Applications 11 SP4.

The Bigmem kernel also increases the number of threads supported by SLES for SAP Applications 11. This is required for systems that have more than 1024 logical CPUs such as an IBM Power System E880 configured with 192 physical CPU core with SMT8, resulting in 1536 logical CPU threads.

IBM, SAP and SUSE have rigorously tested the Bigmem kernel with SAP HANA for several months and the official certification is available. The recommended patch list can be found at https://download.suse.com/Download?buildid=abdTREGeaIw~

Note that the Bigmem kernel is not supported for applications other than SAP HANA.

Also, note that clients implementing SAP HANA on SLES for SAP Applications 12 do not need the Bigmem kernel because the base kernel in SLES 12 already supports up to 32 TB of memory.

For more information, see:

Jay Kruemcke

Product manager for SUSE Linux Enterprise Server for POWER

jayk@suse.com

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Posted in AIX & Power Systems Blogroll, SAP HANA, SUSE Linux | Leave a comment

SUSE Enterprise Storage 4 is now available for X86 and ARM systems

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SUSE Enterprise Storage version 4 is now available. SUSE Enterprise Storage is the Software Defined Storage market leader and adds significant new capabilities in this release including:

  • Unified Block, File and Object storage with the addition of CephFS
  • New support for 64-bit ARM hardware based on SUSE Linux Enterprise Server 12 for ARM
  • Advanced graphical storage management based on openATTIC
  • Long distance block storage and multisite object storage replication
  • Tech preview support of NFS Ganesha support

More details at https://www.suse.com/communities/blog/4-go-suse-enterprise-storage-4-goes-ga/

Posted in ARM Processors, Cloud, Open Source, Software Defined Storage, SUSE Linux, Uncategorized | Leave a comment

SUSE partners with ARM, Cavium and OpenHPC to deliver OpenHPC High Performance Computing Infrastructure for ARM

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SUSE has partnered with Cavium Inc., OpenHPC, and ARM Ltd., a SoftBank company, to cultivate the High Performance Computing system software stack for systems based on the 64-bit ARM AArch64 processors.

Together, these partners have established an OpenHPC build, integration, and developer access service built on SUSE Linux Enterprise Server running on Cavium ThunderX© 64-bit ARM systems. These systems, currently in Tech Preview, were installed at the Texas Advanced Computing Center in Austin TX (TACC). When completely functional, this OpenHPC service will provide the complete infrastructure needed to support development of high performance solutions based on ARM processor-based systems.

SUSE also intends to provide commercial support for a subset of the OpenHPC stack as part of the HPC module that will be delivered in the future as part of SUSE Linux Enterprise Server 12 for ARM. SUSE uses modules to speed delivery of packages more quickly than the traditional enterprise software delivery model. The SLES for ARM HPC module will contain a prioritized group of packages required for many HPC workloads. The goal is to expand the number of packages included in the HPC module over time. Clients can benefit from open source innovation while having the peace of mind of an integrated and validated stack of HPC software with SUSE support.

SUSE is also providing early access to OpenHPC components and other packages as part of the  Package Hub at https://packagehub.suse.com/

ARM has announced the availability of OpenHPC V1.2 on ARM in anticipation of the Super Computing 16 conference November 14th in Salt Lake City Utah.  https://community.arm.com/groups/arm-development-platforms/blog/2016/11/10/constructing-the-pillars-of-the-arm-hpc-ecosystem

The OpenHPC build, integration, and developer access service for ARM is currently available as a technology preview. SUSE Linux Enterprise Server for ARM is available now as a fully supported product. The HPC module for SLES for ARM will be available at a later date.

For more about SUSE Linux Enterprise Server for ARM, see https://www.suse.com/products/arm/

For information on the SUSE ARM partner program see https://www.suse.com/pa

Posted in ARM Processors, High Performance Computing, Open Source, SUSE Linux | Leave a comment

SAP HANA 2 platform now available for SLES 12 SP1 on little-endian POWER systems

hana-sap-croptThe SAP HANA 2 platform, announced on November 8, 2016, is now available for deployment on the 64-bit Little-Endian variant of IBM POWER8 systems running SUSE Linux Enterprise Server (SLES) 12 Service Pack 1.

This announcement enables SAP HANA 2 customers to exploit the capabilities of SLES 12 including features such as the systemd service manager, system rollback via the btrfs filesystem, and automated failover of SAP HANA environments by the SUSE Linux Enterprise High Availability Extension.

To support the SAP HANA 2 platform, SUSE is providing SUSE Linux Enterprise Server for SAP® Applications 12 Service Pack 1 for POWER.  Like the previous releases of SLES for SAP Applications, it is designed to improve SAP HANA availability and performance by providing multiple high availability options that can automate SAP HANA System replication and failover, maintain performance with Page Cache limits, and provide seamless priority support from SUSE and SAP.

SUSE support for the latest generation of SAP HANA extends SUSE market leadership in SAP HANA deployments, built on over 13 years of partnership with SAP to supporting over 4000 customers.

The relevant SAP Note is at https://launchpad.support.sap.com/#/notes/2235581 (SAP customer login required)

Please note that the ISO image for SLES 12 SP1 for SAP Applications is not available but update channels can be used instead.

For a fresh installation, see Installing SUSE Linux Enterprise Server for SAP® Applications 12 Service Pack 1 for POWER https://www.suse.com/communities/blog/installing-suse-linux-enterprise-server-sap-applications-12-service-pack-1-power/

To upgrade SLES 12 SP1 for POWER LE system to SLES for SAP Applications for POWER LE 12 SP1 see https://www.suse.com/support/kb/doc?id=7018295

Posted in AIX & Power Systems Blogroll, Information Technology | Leave a comment

Introducing SUSE Linux Enterprise Server for… the Raspberry Pi

raspberry_pi_logoIn addition to the SUSE Linux Enterprise Server (SLES) for ARM processors that I introduced last week, we had one special hardware platform to support – the Raspberry Pi

The Raspberry Pi 3 Model B is an ideal platform for learning about and experimenting with the SUSE Linux Enterprise Server.

SLES for the Raspberry Pi is built on SLES for ARM, just packaged differently for the Raspberry Pi.

My full blog on the topic can be found at https://www.suse.com/communities/blog/suse-linux-enterprise-server-raspberry-pi/

Links:

Quick start guide for SLES on the Raspberry Pi

Download SLES for the Raspberry Pi with free one year subscription

Forum for questions & answers

Getting started with SUSE Subscription codes on the Raspberry Pi

Have lots of FUN!

Posted in Internet of Things, SUSE Linux | Leave a comment

Introducing SUSE Linux Enterprise for ARM

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One of the projects I have been working on at SUSE is to bring the proven capabilities of SUSE Linux Enterprise Server operating system to a new processor architecture: 64-bit ARM.

ARM processors provide the underpinning for most of the technology we interact with everyday- everything from cell phones to network routers to automobiles use processor designs licensed from ARM Ltd.

In the past few years, ARM introduced 64-bit processors that are targeted for server applications. Early implementations from AMD and HP meet with limited success, but as the technology matured, many more companies are betting that ARM processors can provide a compelling alternative to X86 processors, particularly for workloads such as High Performance Computing.

SUSE has long supported the development of 64-bit ARM though the community OpenSUSE project. Last year, SUSE formally started a partner program to deliver an enterprise grade Linux operating system for companies building servers based on 64-bit ARM technology. https://www.suse.com/partners/arm/

The culmination of that program was the creation of a new product, SUSE Linux Enterprise Server for ARM. AKA “SLES for ARM”. This product was announced on October 25th with availability later in 2016.

For more details, please see to my blog on SUSE.com

 

 

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Long term support for SLES 11 SP4 for POWER

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I am now the new product manager at SUSE for SUSE Linux Enterprise Server (SLES) for POWER. SLES for POWER has been extremely successful since the introduction of SAP HANA for POWER in late 21015.

Workloads like SAP HANA require a long support life for the underlying operating systems – in this case SUSE Linux Enterprise 11 Service Pack 4. General support for Service Pack 4 will end March of 2019.

To provide extended support for POWER clients running SLES 11 SP4 for their SAP HANA environments, I created my very first new offering at SUSE,  long term service pack support (LTSS) offering for SLES 11 Service Pack 4 for POWER.

See https://www.suse.com/communities/blog/long-term-support-sles-11-sp4-power/ for more details.

 

Posted in AIX & Power Systems Blogroll, SUSE Linux | Leave a comment