If you would like to learn more about CPU frequency scaling for Power systems running Linux, check out this blog on the new Linux on IBM Power Systems Developer portal : https://developer.ibm.com/linuxonpower/2016/10/12/cpu-frequency-scaling-on-ibm-power-systems-running-linux/ This how-to describes multiple ways to read the current CPU frequency and examples of methods that can be used to customize the configuration such as limiting the max scaling frequency or setting a user configured static CPU frequency.
My new blog entry: Enable System Native BLAS library for netlib-java on OpenPOWER Linux Systems on the Linux on IBM Power Systems Developer portal provides instructions on enabling a System Native BLAS library for netlib-java on OpenPOWER Linux distributions, such as Red Hat Enterprise Linux 7.2 (little-endian) and subsequent releases.
Have you heard about the IBM SDK for Linux on Power ? Do you worry about the time you might need to learn how to use it, or find it too intimidating to try out? To ease the effort, a few basic video walk-throughs are now available to show you typical SDK use-cases. The videos are now available at https://www.youtube.com/playlist?list=PLXUHQs-GmUIRbCsNtjcTAIFpZdvmhEPjq . Part 1 : Getting started: Import, port, and run a makefile-based project from your laptop On your laptop computer, launch the SDK Import a... [More]
Technology heavily depends on the server infrastructure that lies behind the scenes of everyday services. It is imperative that security is ensured for these critical systems. System uptime and data integrity are constantly under fire from malicious entities. System developers and administrators are responsible for securing these systems from attackers. Security audits on system configurations, utilization of tools to seek out and execute known exploits, and testing system applications before deployment can lead to found issues... [More]
The CAPI accelerated GZIP card uses a the open standard DEFLATE compressed date format, offering reduced data for storage and network traffic while not impacting most I/O traffic. The DEFLATE data format is widely accepted through zlib, gzip, Java, and other applications. The following areas are examples of typical applications that can benefit from compression acceleration: Storage or transmission of large amounts of data - on an average, larger than 100MB/s Expensive storage with high storage bandwidth, where the compression ratio of the... [More]
A new update release for the 7.1 series of the IBM Advance Toolchain for Linux on Power is now available. This is a maintenance release and contains the following fixes: The GNU C Library provides:
Fix CVE-2015-7547: getaddrinfo() stack-based buffer overflow . Fix CVE-2016-3075: Stack overflow in _nss_dns_getnetbyname_r . Fix CVE-2015-8779: catopen() Multiple unbounded stack allocations . Fix CVE-2015-8776: Passing out of range data to strftime() causes a segfault . Fix for assertion failure in res_query.c with un-connectable name server... [More]
Just spend some days to build collected mtlumberjack plugin for ppc64le. Got some compatibility problem and decided to post founded solution. collectd-write_metric_mtlumberjack is a output plugin for collectd, which outputs metrics to logstash mtgraphite input plugin with mtlumberjack protocol. We need them to monitor activities for Apache Spark service on ppc64le architecture. Instructions can be found here .
The 13th release for OpenStack, called Mitaka was released on May7th . The LTC has been active in OpenStack since the Folsum (6th) release. In Mitaka. our LTC team validated a good portion of the release on Power, testing every developer patch that came in for key OpenStack project, the most critical being the Nova Compute node. The team also made significant contributions in Ironic (Bare Metal), Neutron (Networking) and Nova (Compute) in this release. Continuous Integration on Power : During... [More]
The IBM Software Development Kit for Linux on Power (SDK) provides two related tools, Source Code Advisor (SCA) and the Feedback Directed Program Restructuring tool (FDPR), that implement feedback-directed, post-link program analysis and optimization technology. SCA finds and visualizes performance problems in the application source code, using information produced by using FDPR. 1. Feedback Directed Program Restructuring FDPR can analyze, report on and optimize t he executable image of a program or... [More]
A new update release for the 7.0 series of the IBM Advance Toolchain for Linux on Power is now available. This is a maintenance release and contains a series of fixes: Fix installation issues on RHEL 7. OpenSSL provides fixes for CVE-2016-0701 and CVE-2015-3197 . GCC fix for insn does not satisfy its constraints . The GNU C Library provides:
Fix CVE-2015-7547: getaddrinfo() stack-based buffer overflow . Fix CVE-2016-3075: Stack overflow in _nss_dns_getnetbyname_r . Fix for assertion failure in res_query.c with un-connectable name... [More]
A new update release for the 9.0 series of the IBM Advance Toolchain for Linux on Power is now available. This release contains a lot of fixes and features: Golang for ppc64le with Go 1.6 provided. GCC provides:
Fix for PowerPC ISA 2.07 is inefficient at doint (float)(int)x . Fix for wrong code generation in __sync_val_compare_and_swap on PowerPC . Fix for libatomic fails to build with -Os on powerpc64-linux . Fix swap optimization on powerpc64le . IEEE 128-bit floating point support. New constraint for ISA 3.0 (power9). Fix for an... [More]
A new update ( PowerKVM 22.214.171.124 ) for the 3.1 release stream of IBM PowerKVM is now available. It can be downloaded from Fix Central via the following link: http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Virtualization%2Bsoftware&product=ibm/Other+software/PowerKVM&release=126.96.36.199&platform=All&function=all The release provides fixes for over 65 bugs and a host of CVE's. About the IBM PowerKVM IBM® PowerKVM™ provides an open virtualization choice for IBM scale-out Linux systems... [More]
Blog: Ron Gordon, Director of Power Systems, Mainline Information Systems Title: Linux Implementation Options for Power Systems I have been getting questions on the various Linux implementation options on Power Systems. The implementations options basically involve installation of a bare metal system, a PowerKVM virtualized system, and PowerVM virtualized systems. - Power Systems Model and Hypervisors: Let me start with a little information on the various Power Systems servers and their... [More]
Blog: BlockChain: what is this all about? Ron Gordon, Director Power Systems, Mainline Information Systems BlockChain is starting to gain attention. Let’s start with a simple view of what this “database” organization is about. To me, the easiest way to view this is that BlockChain is a database that acts as a shared general ledger. It consists of a record with a “key” and then continues with fields that pertain to that key. An example might be a car... [More]
A new update release for the 8.0 series of the IBM Advance Toolchain for Linux on Power is now available. This is a maintenance release for the 8.0 series (8.0-6) and contains a series of fixes: Binutils provides:
Fix for crash on fuzzed samples . Fix powerpc gas abort on invalid instruction fixups. Fix the computation of the addends for an ARM_TLS_LE32 reloc . The GNU C Library provides:
Fix CVE-2015-7547: getaddrinfo() stack-based buffer overflow . Fix for _IO_wstr_overflow integer overflow . Fix read past end of pattern in... [More]