• Transputer type chips in production now? 2016

    From fred@21:1/5 to All on Thu Aug 25 14:06:20 2016
    Does anyone know of a transputer style chip currently in production?
    Also could anyone indicate the raw processing power of a single T800
    for example in relation to an intel family chip?
    (Tricky I know - I'm just looking for an idea - I understand the difference in purpose and design)

    There are also a lot of claimed parallel FPGA chips arround - how do they compare in terms of processing power to the intel family?

    Any comparative info on these subjects would be welcome.

    thanks
    john

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  • From Dave McGuire@21:1/5 to fred on Fri Aug 26 23:37:24 2016
    On 08/25/2016 09:06 AM, fred wrote:
    Does anyone know of a transputer style chip currently in production?

    There's the xCORE microcontroller family by XMOS. These were designed
    by the original architect of the Transputer, and share some
    architectural similarities.

    -Dave

    --
    Dave McGuire, AK4HZ
    New Kensington, PA

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  • From nuked@21:1/5 to John on Sat Aug 27 00:41:49 2016
    Hi,

    On Thursday, August 25, 2016 at 2:06:53 PM UTC+1, John wrote:
    Does anyone know of a transputer style chip currently in production?

    STMicroelectronic's ST20 contains what is essentially a Transputer core (historically, STMicroelectronics inherited/acquired Inmos and the Transputer technology/IP). Whether it is still being manufactured I don't know (datasheet I found dated 2004, but
    there's probably a _lot_ of them in set-top boxes and similar devices around the world!). The closest descendant, I guess, is XMOS's XCore. Same CSP ideas underlying it, but somewhat different in mechanics (I don't think the XCore was intended to be
    general-purpose in the microprocessor sense, but could be wrong!).

    Also could anyone indicate the raw processing power of a single T800
    for example in relation to an intel family chip?

    Googling around suggests about 10 MIPS for a 20 MHz T800. Hard to compare directly, since the feature set is completely different, but looking at a table on Wikipedia suggests AMD's am386 and Intel's 486DX @25MHz are comparable.

    (Tricky I know - I'm just looking for an idea - I understand the difference in
    purpose and design)

    There are also a lot of claimed parallel FPGA chips arround - how do they compare in terms of processing power to the intel family?

    [snip]

    Whole subject probably. FPGAs are mainly limited by how fast they can go, but with the plug-and-play soft CPU cores (and hard CPU cores on various), you can probably get decently high performance for specific applications. The parallelism, of course,
    is inherent in the FPGA, but likely difficult to exploit well, correctly. (Handel-C was an excellent thing, VHDL I'm less convinced).

    There have been some papers in CPA (www.wotug.org) in recent years covering Transputers in FPGAs, which look very promising. Perhaps for the hobbyist more than industry currently, but still attractive.


    -- Fred

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  • From fred@21:1/5 to All on Fri Sep 2 16:40:28 2016
    Thanks to Dave and Nuked.
    Some interesting info for me to follow up there.

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  • From andrew@fossi-foundation.org@21:1/5 to fred on Thu Sep 14 14:41:09 2017
    On Thursday, 25 August 2016 14:06:53 UTC+1, fred wrote:
    Does anyone know of a transputer style chip currently in production?

    http://www.adapteva.com/introduction/

    https://www.parallella.org/

    Each Parallella board with expansion connectors exposes 2x eLinks, with a third facing the FPGA fabric for host interface, and a fourth unused. You can just chain them together and tie expansion pins to configure the network location/offset.

    Cheers,

    Andrew

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