Open Power
  • Order of the Butterfly
    Order of the Butterfly
    ernsteiswuerfel
    Posts: 438 from 2015/6/18
    From: Funeralopolis
    Ah, finally we are getting somewhere! At least the 'quad-core as SBC' looks interesting. But we'll have to wait and see how this translates to available products in 202X+2. ;-)

    @Andreas_Wolf: Thanks for your continuous updates! Looking at the schedule update you posted I gather that VMX/VSX will not be implemented (too much work?) for the time being?
    Talos II. [Gentoo Linux] | PMac G5 11,2. PMac G4 3,6. PBook G4 5,8. [MorphOS 3.15 / Void Linux / Gentoo Linux] | Vampire V4 SA [ApolloOS / Amiga OS 3.2]
  • »15.04.21 - 22:30
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  • Yokemate of Keyboards
    Yokemate of Keyboards
    Andreas_Wolf
    Posts: 11438 from 2003/5/22
    From: Germany
    > I gather that VMX/VSX will not be implemented (too much work?)
    > for the time being?

    Yes, correct. Their long-term plan is however to not implement VMX/VSX ever but instead somehow convince IBM and the OpenPOWER Foundation to abandon VSX in favour of Libre-SOC's non-SIMD SimpleV (or Simple-V, seems they can't decide on one spelling variant) vector augmentation.
  • »16.04.21 - 00:03
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  • Order of the Butterfly
    Order of the Butterfly
    ernsteiswuerfel
    Posts: 438 from 2015/6/18
    From: Funeralopolis
    Lets hope this thing won't turn up in BMCs only...
    Talos II. [Gentoo Linux] | PMac G5 11,2. PMac G4 3,6. PBook G4 5,8. [MorphOS 3.15 / Void Linux / Gentoo Linux] | Vampire V4 SA [ApolloOS / Amiga OS 3.2]
  • »04.06.21 - 11:23
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  • Yokemate of Keyboards
    Yokemate of Keyboards
    Andreas_Wolf
    Posts: 11438 from 2003/5/22
    From: Germany
    > Lets hope this thing won't turn up in BMCs only...

    Which one? RED's Libre-SOC, ChipEleven's PythonWatt/SuperPOWER, or LibreBMC's A2P? :-)
  • »04.06.21 - 13:00
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  • Order of the Butterfly
    Order of the Butterfly
    ernsteiswuerfel
    Posts: 438 from 2015/6/18
    From: Funeralopolis
    Any of the above. ;-)
    Talos II. [Gentoo Linux] | PMac G5 11,2. PMac G4 3,6. PBook G4 5,8. [MorphOS 3.15 / Void Linux / Gentoo Linux] | Vampire V4 SA [ApolloOS / Amiga OS 3.2]
  • »04.06.21 - 16:21
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  • Yokemate of Keyboards
    Yokemate of Keyboards
    Andreas_Wolf
    Posts: 11438 from 2003/5/22
    From: Germany
    > First test chip tape-out (180nm) is claimed to be a mere 5 days away

    Took a little longer: https://openpowerfoundation.org/libre-soc-180nm-power-isa-asic-submitted-to-imec-for-fabrication/

    The Libre-SOC test ASIC is claimed to be "implementing a fixed-point subset of the v3.0B OpenPOWER ISA", which is strange considering that compliancy subsets were introduced only with v3.0C of the ISA. There are no subsets in v3.0 or v3.0B.

    Fun fact: "The Cell Library used, FlexLib, […] was developed by Staf Verhaegen of Chips4Makers […]." This happens to be MorphZone member Fats.

    And of course, also this significant event doesn't come without some dubious statements from the project lead:

    "Libre-SOC […] is the first wholly-independent Power ISA ASIC outside of IBM to go Silicon in 12 years."
    Well, during the last 12 years, Freescale/NXP has released more than a dozen different e200-based ASIC products (not counting variants of those), the most recent one being the 16nm S32R294 released this year. Also, the entire QorIQ T family and most of the QorIQ P family are younger than 12 years. Would be interesting to know which 2009-ish non-IBM Power ISA ASIC with IBM-independent microarchitecture he's referring to here in particular, and why he doesn't accept all those later NXP/Freescale ASICs to meet his mentioned criteria.

    "they had to go through some serrioous review to get OpenPOWER out the door and into the OPF, ironically it's been ongoing for something like a decade, long before RV existed."
    To contrast this with the timeline as it took place in the real world:
    2010: RISC-V project started
    2011: first version of RISC-V ISA released
    2013: OpenPOWER Foundation founded (as OpenPOWER Consortium)
    2015: RISC-V Foundation founded, Power ISA v3.0 released


    Edit: more of this nonsense

    [ Edited by Andreas_Wolf 20.07.2021 - 10:32 ]
  • »08.07.21 - 20:14
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  • Yokemate of Keyboards
    Yokemate of Keyboards
    Andreas_Wolf
    Posts: 11438 from 2003/5/22
    From: Germany
    Update:

    > POWER10

    Seems it will be Power10 instead of POWER10:

    https://www.rpgpgm.com/2021/07/ibm-updates-power-branding.html
    https://www.itjungle.com/2021/08/02/no-more-shouting-the-name-power-well-except-in-our-title-here/
    https://www.ibm.com/it-infrastructure/power/power10

    …which in my humble opinion is a stupid decision for the following reason:
    So far, Power has been (since superseding PowerPC in 2006) the name of the instruction set architecture (ISA), while POWER has been the name of IBM's line of server CPU microarchitectures (POWER1…9, with POWER3…5 implementing PowerPC ISA and POWER5+…9 implementing Power ISA). This means that so far, the (non-)capitalization of the word can be used for distinction between ISA and microarchitecture. With Power10, this will be no more. The ISA and the IBM server CPU microarchitecture will both go by the very same name: Power. So what will be the correct answer to the question whether 440/460/470, A2, e200, e500, e5500, e6500, PA6T or any of the new (soft)cores discussed in this thread are Power? Well, it will depend on what the questioner has in mind, making room for misunderstandings. The correct answer will be 'yes' for Power [ISA], but it will be 'no' for Power [microarchitecture].
  • »07.08.21 - 14:25
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