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Can You Install Linux On a 1993 PC?
by Peter Reutemann 07 Jan '18

07 Jan '18

'The oldest x86 CPU that the Linux kernel supports today is theoretically the 486. However is this theory actually true in practice? I decided to put this theory to the test in my project. His site describes installing Gentoo Linux on an "ancient" IBM PS/1 Consultant 2133 19C (released in 1993), with 64MB SIMM-72 RAM. (Though to speed things up, he compiled that minimal version of Gentoo on a modern Thinkpad T430 released in 2012.) "Due to the age of the PC, the BIOS only supports booting from the floppy drive or internal HDD," so there was also some disk partitioning and kernel configuration. ("Must disable 64-bit kernel for obvious reasons!") A half-hour video shows that it takes almost 11 minutes just to boot up -- and five and a half minutes to shut down. "Despite the many roadblocks I faced, I was impressed by the level of support Linux has for ancient hardware like this." And there's one more added bonus. "Given the age of the 486 (1989 technology), it does not support branch prediction... Ironically this makes it safe from the Meltdown and Spectre attacks."' -- source: https://linux.slashdot.org/story/18/01/07/228222 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Can We Replace Intel x86 With an Open Source Chip?
by Peter Reutemann 07 Jan '18

07 Jan '18

'Perhaps the Meltdown and Spectre bugs are the impetus for making long-overdue changes to the core DNA of the semiconductor industry and how chip architectures are designed... Linux (and other related FOSS tech that forms the overall stack) is now a mainstream operating system that forms the basis of public cloud infrastructure and the foundational software technology in mobile and Internet of Things (IoT)... We need to develop a modern equivalent of an OpenSPARC that any processor foundry can build upon without licensing of IP, in order to drive down the costs of building microprocessors at immense scale for the cloud, for mobile and the IoT. It makes the $200 smartphone as well as hyperscale datacenter lifecycle management that much more viable and cost-effective. Just as Linux and open source transformed how we view operating systems and application software, we need the equivalent for microprocessors in order to move out of the private datacenter rife with these legacy issues and into the green field of the cloud... The fact that we have these software technologies that now enable us to easily abstract from the chip hardware enables us to correct and improve the chips through community efforts as needs arise... We need to stop thinking about microprocessor systems' architectures as these licensed things that are developed in secrecy by mega-companies like Intel or AMD or even ARM... The reality is that we now need to create something new, free from any legacy entities and baggage that has been driving the industry and dragging it down the past 40 years. Just as was done with Linux. The bigger question is which chip should take its place. "I don't see ARM donating its IP to this effort, and I think OpenSPARC may not be it either. Perhaps IBM OpenPOWER? It would certainly be a nice gesture of Big Blue to open their specification up further without any additional licensing, and it would help to maintain and establish the company's relevancy in the cloud going forward. "RISC-V, which is being developed by UC Berkeley, is completely Open Source."' -- source: https://news.slashdot.org/story/18/01/06/0424200 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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After Intel ME, Researchers Find Security Bug In AMD's SPS Secret Chip-on-Chip
by Peter Reutemann 07 Jan '18

07 Jan '18

'AMD has fixed, but not yet released BIOS/UEFI/firmware updates for the general public for a security flaw affecting the AMD Secure Processor. This component, formerly known as AMD PSP (Platform Security Processor), is a chip-on-chip security system, similar to Intel's much-hated Management Engine (ME). Just like Intel ME, the AMD Secure Processor is an integrated coprocessor that sits next to the real AMD64 x86 CPU cores and runs a separate operating system tasked with handling various security-related operations. The security bug is a buffer overflow that allows code execution inside the AMD SPS TPM, the component that stores critical system data such as passwords, certificates, and encryption keys, in a secure environment and outside of the more easily accessible AMD cores. Intel fixed a similar flaw last year in the Intel ME.' -- source: https://hardware.slashdot.org/story/18/01/07/2015226 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Data Centres: No Cheaper NVidia Gaming Graphics Cards For You
by Lawrence D'Oliveiro 05 Jan '18

05 Jan '18

Another entry in the “If I Buy It, Do I Own It?” files: NVidia’s EULA for the proprietary drivers for its GeForce and Titan gaming graphics cards has been amended to forbid their use in data centres: <http://www.theregister.co.uk/2018/01/03/nvidia_server_gpus/>. Such users will have to shell out for more expensive cards. For their own good, of course...

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Munich Council: To Hell With Linux, We're Going Full Windows in 2020
by Peter Reutemann 04 Jan '18

04 Jan '18

'The German city of Munich, which received much popularity back in the day when it first ditched Microsoft's services in favor of open-source software, has now agreed to stop using Linux and switch back to Windows. If the decision is ratified by the full council in two weeks, Windows 10 will start rolling out across the city in 2020. From a report: A coalition of Social Democrats and Conservatives on the committee voted for the Windows migration last week, Social Democrat councillor Anne Hubner told The Register. Munich rose to fame in the open-source world for deciding to use Linux and LibreOffice to make the city independent from the claws of Microsoft. But the plan was never fully realised -- mail servers, for instance, eventually wound up migrating to Microsoft Exchange -- and in February the city council formally voted to end Linux migration and go back to Microsoft. Hubner said the city has struggled with LiMux adoption. "Users were unhappy and software essential for the public sector is mostly only available for Windows," she said. She estimated about half of the 800 or so total programs needed don't run on Linux and "many others need a lot of effort and workarounds." Hubner added, "in the past 15 years, much of our efforts were put into becoming independent from Microsoft," including spending "a lot of money looking for workarounds" but "those efforts eventually failed." A full council vote on Windows 10 2020 migration is set for November 23, Hubner said. However, the Social Democrats and Conservatives have a majority in the council, and the outcome is expected to be the same as in committee.' -- source: https://news.slashdot.org/story/17/11/13/1714220 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Today I Learned ...
by Lawrence D'Oliveiro 22 Dec '17

22 Dec '17

... what a “Layer 8 issue” is. You know how the ISO/OSI networking model has 7 layers, from the physical hardware up to the actual application that the user is using?

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Roll On The Feudal Internet
by Lawrence D'Oliveiro 22 Dec '17

22 Dec '17

Quoted in <https://www.schneier.com/blog/archives/2017/12/amazons_door_lo.html>: The Key-compatible locks are made by Yale and Kwikset, yet don't work with those brands' own apps. They also can't connect with a home-security system or smart-home gadgets that work with Apple and Google software. And, of course, the lock can't be accessed by businesses other than Amazon. No Walmart, no UPS, no local dog-walking company. And so Amazon becomes a gatekeeper (literally) for access to your very home.

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Does Apple Deliberately Slow Down Older IPhones?
by Lawrence D'Oliveiro 20 Dec '17

20 Dec '17

<https://arstechnica.com/gadgets/2017/12/iphones-slow-over-time-to-preserve-…>: ... the iPhone may throttle performance to preserve battery life or avoid unexpected shutdowns as the battery degrades. What an amazingly complicated solution to the problem. Let me offer a simpler one: why not just make it easier for Iphone users to replace their batteries?

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All 500 of the World's Top 500 Supercomputers Are Running Linux
by Peter Reutemann 19 Dec '17

19 Dec '17

'Linux rules supercomputing. This day has been coming since 1998, when Linux first appeared on the TOP500 Supercomputer list. Today, it finally happened: All 500 of the world's fastest supercomputers are running Linux. The last two non-Linux systems, a pair of Chinese IBM POWER computers running AIX, dropped off the November 2017 TOP500 Supercomputer list. When the first TOP500 supercomputer list was compiled in June 1993, Linux was barely more than a toy. It hadn't even adopted Tux as its mascot yet. It didn't take long for Linux to start its march on supercomputing. >From when it first appeared on the TOP500 in 1998, Linux was on its way to the top. Before Linux took the lead, Unix was supercomputing's top operating system. Since 2003, the TOP500 was on its way to Linux domination. By 2004, Linux had taken the lead for good. This happened for two reasons: First, since most of the world's top supercomputers are research machines built for specialized tasks, each machine is a standalone project with unique characteristics and optimization requirements. To save costs, no one wants to develop a custom operating system for each of these systems. With Linux, however, research teams can easily modify and optimize Linux's open-source code to their one-off designs. The semiannual TOP500 Supercomputer List was released yesterday. It also shows that China now claims 202 systems within the TOP500, while the United States claims 143 systems.' -- source: https://linux.slashdot.org/story/17/11/14/2223227 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Fear And Loathing In Open-Source Clothing Design
by Lawrence D'Oliveiro 18 Dec '17

18 Dec '17

Seems the Valentina project, to create an open-source clothing design package, has split in two over the usual reason--disagreements among the project members <http://libregraphicsworld.org/blog/entry/valentina-seamly2d>. In that article, Alexandre Prokoudine tries to give an even-handed account of the saga, which can sometimes be quite difficult. The proprietary software in this field is extremely expensive--to the point where it becomes hard for clothing makers/designers to hire people who are familiar with using it. An alternative project, called SodaCAD <http://www.sodacad.org/>, takes a very different view: more direct control over the design (as I understand it), rather than trying to automatically fit a predefined design to given measurements, as Valentina does. It hasn’t seen much activity in over three years, though.

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