OR-parallelism or AND-parallelism? [MapReduce] (Was: What does pi in pi-WAM mean?)

From	Mild Shock <janburse@fastmail.fm>
Newsgroups	sci.logic, comp.lang.prolog, sci.physics
Subject	OR-parallelism or AND-parallelism? [MapReduce] (Was: What does pi in pi-WAM mean?)
Date	2026-07-24 15:00 +0200
Message-ID	<113vnlq$bf89$1@solani.org> (permalink)
References	(7 earlier) <113n5j3$5ouq$3@solani.org> <113r9gn$396f7$4@dont-email.me> <113rf37$846i$1@solani.org> <113vmnr$bed5$4@solani.org> <113vn8h$beun$2@solani.org>

Cross-posted to 3 groups.

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Hi,

Via concurrent logic programming, and the
The Fifth Generation Computer Systems
10-year initiative launched in 1982 by Japan:

Fifth Generation Computer Systems (FGCS)
https://en.wikipedia.org/wiki/Fifth_Generation_Computer_Systems

There is a big fundus of material about
relating logic progra execution to parallel
execution. Unfortunetly the topic somehow

lost steam, and has been reduced to Remote
Procedure Call (RPC) of iterators inside the
Web Prolog initiative. But its evident that

this leads to nowhere, on modern CPU and GPU,
since RPC adds an additional comms aka message,
already to only communicate success or failure.

The other comms aka messages approach stems from
implementing parallel query executors for
relational databases and uses messages for

other things. It had already revival in 2008:

Google spotlights data center inner workings
http://news.cnet.com/8301-10784_3-9955184-7.html

Just google MapReduce!

Bye

Mild Shock schrieb:
> Hi,
> 
> You can also deduce that I need comms,
> from pi in pi-WAM, since pi refers to pi-calculus.
> There is also a nice paper, that I have already posted:
> 
> A pi-calculus Specification of Prolog
> https://scispace.com/pdf/a-pi-calculus-specification-of-prolog-3qf2pf04ud.pdf 
> 
> 
> You asked yourself why no atomic and
> only comms? So its as simple as 1+1=2.
> But usenet people are usually slow as fuck.
> 
> Take your time. You could spin loop to ingest
> the topic, i.e. try again in 3-4 months, for
> example reading some of the paper. Although
> 
> I know thats a totally unrealistic request, asking
> a troll to do RTFM and study something. They
> rather make themselves a total laughing stock,
> 
> play stupid games, win usenet prizes.
> 
> Bye
> 
> Mild Shock schrieb:
>> Hi,
>>
>> You don't pay attention, right! I am little
>> bit disappointed that your attention span is
>> near zero. I already posted:
>>
>> From: Mild Shock <janburse@fastmail.fm>
>> Subject: Why do you even need a mpmc queue? [Thunder Kittens]
>> Date: Thu, 23 Jul 2026 08:43:03 +0200
>>
>>  > Hi,
>>  >
>>  > Because I use WebGPU and not WebGL. And
>>  > because WebGPU can adresss modern GPU
>>  > developed with the NVIDIA Volta evolution,
>>  >
>>  > which happened in 2017. Namley that compute
>>  > shaders are not any more subject to the
>>  > realization restriction of lock step
>>  >
>>  > execution, but have independent thread state.
>>  > And because there is independent thread state
>>  > there is also independent time spent for a
>>  >
>>  > a work item by each logical thread, if the
>>  > submitted logical thread uses a lot of branching
>>  > logic or even loops. But the use of branching
>>  >
>>  > and loops is encouraged in independent thread
>>  > state programming of compute shaders. The variables
>>  > that can drive such logic are the scalar variables:
>>  >
>>  > Tour of WGSL - Control Flow
>>  > https://google.github.io/tour-of-wgsl/control-flow/
>>  >
>>  > Then not to waste GPU compute time, by logical
>>  > threads doing nothing. You will need to
>>  > introduce some load balancing among multiple
>>  >
>>  > logical threads. And MPMC queues are one way to
>>  > readize load balancing. Compute shaders with
>>  > producer and consumer entry points are proposed
>>  >
>>  > as fundamental architecture by Thunder Kittens:
>>  >
>>  > ThunderKittens: Simple, Fast, and Adorable AI Kernels
>>  > https://arxiv.org/abs/2410.20399
>>  >
>>  > They are used by this SpaceX acquisition:
>>  >
>>  > Composer 2 Technical Report
>>  > https://arxiv.org/abs/2603.24477
>>  >
>>  > Thunder Kittens uses Hardware support, i.e. tma_expect().
>>  >
>>  > Bye
>>  >
>>  > Chris M. Thomasson schrieb:
>>  >>> never meant to be used in a GPU.
>>  >>> Dmitry CAS version can be used, but
>>  >>>
>>  >>> Why do you even need a mpmc queue
>>  >>> in your compute shader anyway?
>>
>> Chris M. Thomasson schrieb:
>>  > I don't think he knows exactly what he is doing...
>>  > Why does he need a lock/wait-free queue in a
>>  > compute shader? What is he trying to do?
>>
>

Thread

Paul Tarau versus Mr. Taskmanager, who would win? [A PDP-11 Humunkulus from 1979] Mild Shock <janburse@fastmail.fm> - 2026-04-24 02:46 +0200
  AI dooms day escape: Güttinger Wald (Re: Paul Tarau versus Mr. Taskmanager, who would win?) Mild Shock <janburse@fastmail.fm> - 2026-04-25 14:06 +0200
    Elmos Fascist Dreams of a 365 Prolog (Was: AI dooms day escape: Güttinger Wald) Mild Shock <janburse@fastmail.fm> - 2026-05-09 12:52 +0200
      Even the Buddos are clueless [Did Tarau see Liliputians?] (Re: Elmos Fascist Dreams of a 365 Prolog) Mild Shock <janburse@fastmail.fm> - 2026-05-09 15:19 +0200
        Halfing the AI Laptop Budget: Ne-Meow sold out! (Re: Even the Buddos are clueless [Did Tarau see Liliputians?]) Mild Shock <janburse@fastmail.fm> - 2026-05-10 09:09 +0200
    Prolog Expert Ginis (PEGs) on a Keychain (Re: AI dooms day escape: Güttinger Wald) Mild Shock <janburse@fastmail.fm> - 2026-06-20 13:04 +0800
      Chatbot Classified as a Weapon (Re: Prolog Expert Ginis (PEGs) on a Keychain) Mild Shock <janburse@fastmail.fm> - 2026-06-21 05:39 +0800
      Introduction to AI Accelerator Prolog [π-WAM of Dogelog] (Re: Prolog Expert Ginis (PEGs) on a Keychain) Mild Shock <janburse@fastmail.fm> - 2026-07-17 11:16 +0200
        Not praying to the god of lambda calculus [π beats α] (Re: Introduction to AI Accelerator Prolog [π-WAM of Dogelog]) Mild Shock <janburse@fastmail.fm> - 2026-07-17 11:17 +0200
        Re: Introduction to AI Accelerator Prolog [π-WAM of Dogelog] (Re: Prolog Expert Ginis (PEGs) on a Keychain) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-17 13:03 -0700
          pi in pi-WAM refers to pi-calculus (Was: Introduction to AI Accelerator Prolog [π-WAM of Dogelog] ) Mild Shock <janburse@fastmail.fm> - 2026-07-18 01:16 +0200
            Milners fickle() in pi-WAM [For fun and profit] (Re: pi in pi-WAM refers to pi-calculus) Mild Shock <janburse@fastmail.fm> - 2026-07-18 01:50 +0200
              Re: Milners fickle() in pi-WAM [For fun and profit] (Re: pi in pi-WAM refers to pi-calculus) Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-18 01:34 -0700
                Robin Milners pi calculus is typeless (Was: Milners fickle() in pi-WAM [For fun and profit]) Mild Shock <janburse@fastmail.fm> - 2026-07-18 10:57 +0200
                Can the Church Turing hypotheses be refuted? [TLo @ FOM] (Was: Robin Milners pi calculus is typeless) Mild Shock <janburse@fastmail.fm> - 2026-07-18 11:08 +0200
    AI Laptops are just strange novel xBoxes (Was: AI dooms day escape: Güttinger Wald) Mild Shock <janburse@fastmail.fm> - 2026-07-08 20:44 +0200
      Re: AI Laptops are just strange novel xBoxes (Was: AI dooms day escape: Güttinger Wald) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-08 15:22 -0700
        TDR solutions --> work slicing (Was: AI Laptops are just strange novel xBoxes) Mild Shock <janburse@fastmail.fm> - 2026-07-09 09:47 +0200
          Thinking of Chris M. Thomasson: From shadertoys to computetoys? (Re: TDR solutions --> work slicing) Mild Shock <janburse@fastmail.fm> - 2026-07-09 09:52 +0200
    FYI: Unified Memory Architecture (UMA) (Re: Implementing Gas for a Compute Shader [Avoid TDR]) Mild Shock <janburse@fastmail.fm> - 2026-07-09 19:43 +0200
      The Wider von Neumann Neck (Re: FYI: Unified Memory Architecture (UMA)) Mild Shock <janburse@fastmail.fm> - 2026-07-10 07:51 +0200
        The new MIMD Warp is the cherry on top (Re: The Wider von Neumann Neck) Mild Shock <janburse@fastmail.fm> - 2026-07-10 08:08 +0200
        Dumbwit, just run it on your RTX 5070 trash (Re: The Wider von Neumann Neck) Mild Shock <janburse@fastmail.fm> - 2026-07-10 15:49 +0200
          We are still waiting for results! [Confused Dumbwit] (Re: We are waiting Dumbwit: 1 Month, 3 Months, .. [node.js dawn]) Mild Shock <janburse@fastmail.fm> - 2026-07-10 22:45 +0200
            404 Brain not Found [GPU saturation] (Re: We are still waiting for results! [Confused Dumbwit]) Mild Shock <janburse@fastmail.fm> - 2026-07-10 23:40 +0200
              I nowhere talked about 10GB/s (Re: 404 Brain not Found [GPU saturation]) Mild Shock <janburse@fastmail.fm> - 2026-07-10 23:41 +0200
                I nowhere said something about AI (Re: I nowhere talked about 10GB/s) Mild Shock <janburse@fastmail.fm> - 2026-07-10 23:52 +0200
                What do you not understand in "budget"? (Re: I nowhere said something about AI) Mild Shock <janburse@fastmail.fm> - 2026-07-11 00:08 +0200
                SWI makes only MLips not GLips (Re: What do you not understand in "budget"?) Mild Shock <janburse@fastmail.fm> - 2026-07-11 00:09 +0200
                micro penis got hurt by "budget" (Re: SWI makes only MLips not GLips) Mild Shock <janburse@fastmail.fm> - 2026-07-12 19:20 +0200
  Micro Penis Nemesis: Shoe String Budget π-WAM (Was: Paul Tarau versus Mr. Taskmanager, who would win?) Mild Shock <janburse@fastmail.fm> - 2026-07-12 19:26 +0200
    micro penis struggels with mobile grade GPU concept [Redmi Note 14 Pro+ Results] (Re: Micro Penis Nemesis: Shoe String Budget π-WAM) Mild Shock <janburse@fastmail.fm> - 2026-07-12 21:32 +0200
      Micro Penis Existential Crisis: DeepSeek on a Mobile GPU (Re: micro penis struggels with mobile grade GPU concept [Redmi Note 14 Pro+ Results]) Mild Shock <janburse@fastmail.fm> - 2026-07-12 21:47 +0200
        Micro Penis is worse than Sleepy Joe (Re: Micro Penis Existential Crisis: DeepSeek on a Mobile GPU) Mild Shock <janburse@fastmail.fm> - 2026-07-12 23:00 +0200
          Maybe change your pampers? (Was: Micro Penis is worse than Sleepy Joe) Mild Shock <janburse@fastmail.fm> - 2026-07-12 23:01 +0200
            herpes blister rossy boy is confused (Re: Maybe change your pampers?) Mild Shock <janburse@fastmail.fm> - 2026-07-13 06:54 +0200
              nothing gets blocked except your brain [LPDDR5X-RAM] (Re: herpes blister rossy boy is confused) Mild Shock <janburse@fastmail.fm> - 2026-07-13 13:21 +0200
                flogging a dead horse PCI VRAM graphic cards (Re: nothing gets blocked except your brain [LPDDR5X-RAM]) Mild Shock <janburse@fastmail.fm> - 2026-07-13 13:52 +0200
              GPUs evolved from SIMD to MIMD [NVIDIA Volta 2017] (Re: herpes blister rossy boy is confused) Mild Shock <janburse@fastmail.fm> - 2026-07-20 17:11 +0200
                A.D.I.D.A.S. Gopnik lost his screws (Re: GPUs evolved from SIMD to MIMD [NVIDIA Volta 2017]) Mild Shock <janburse@fastmail.fm> - 2026-07-20 19:58 +0200
  I'm a spinner, I'm a sinner [Dmitry Vyukov for pi-WAM] (Re: Paul Tarau versus Mr. Taskmanager, who would win? [A PDP-11 Humunkulus from 1979] Mild Shock <janburse@fastmail.fm> - 2026-07-19 11:55 +0200
    Gemini, DeepSeek, OpenAI all know Dmitriy V'jukov (Re: I'm a spinner, I'm a sinner [Dmitry Vyukov for pi-WAM]) Mild Shock <janburse@fastmail.fm> - 2026-07-20 08:33 +0200
      The Cache Identity Crisis by Micro Penis (Re: Gemini, DeepSeek, OpenAI all know Dmitriy V'jukov) Mild Shock <janburse@fastmail.fm> - 2026-07-20 13:54 +0200
        Just RTFM the RDNA 3.5 specs! [GPU Cache Lines] (Re: The Cache Identity Crisis by Micro Penis) Mild Shock <janburse@fastmail.fm> - 2026-07-20 14:10 +0200
          The large memory tax: ECC RAM (Re: Just RTFM the RDNA 3.5 specs! [GPU Cache Lines]) Mild Shock <janburse@fastmail.fm> - 2026-07-20 14:23 +0200
          Re: Just RTFM the RDNA 3.5 specs! [GPU Cache Lines] (Re: The Cache Identity Crisis by Micro Penis) Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-20 12:26 -0700
            Re: Just RTFM the RDNA 3.5 specs! [GPU Cache Lines] (Re: The Cache Identity Crisis by Micro Penis) R Kym Horsell <kymhorsell@gmail.com> - 2026-07-20 22:20 +0000
              Friendly Reminder: GPU 10x more performant than CPU (Was: Just RTFM the RDNA 3.5 specs! [GPU Cache Lines]) Mild Shock <janburse@fastmail.fm> - 2026-07-21 00:39 +0200
                Breaking the CUDA edge in AI by WebGPU (Was: Friendly Reminder: GPU 10x more performant than CPU) Mild Shock <janburse@fastmail.fm> - 2026-07-21 00:56 +0200
                Like WebAssembly before it, WebGPU has "escaped" the browser. (Was: Breaking the CUDA edge in AI by WebGPU) Mild Shock <janburse@fastmail.fm> - 2026-07-21 01:05 +0200
                If you are paranoid you can use Falco [Agentic AI] (Re: Like WebAssembly before it, WebGPU has "escaped" the browser.) Mild Shock <janburse@fastmail.fm> - 2026-07-21 22:57 +0200
                What would an EMACS guru say [Windows Recall] (Re: If you are paranoid you can use Falco [Agentic AI]) Mild Shock <janburse@fastmail.fm> - 2026-07-21 23:35 +0200
                Decide what you critique tiny winy penis (Re: What would an EMACS guru say [Windows Recall]) Mild Shock <janburse@fastmail.fm> - 2026-07-22 08:17 +0200
                How confused is tiny winy penis? (Was: Decide what you critique tiny winy penis) Mild Shock <janburse@fastmail.fm> - 2026-07-22 08:28 +0200
                Maybe change your hobby, become a dog owner? (Was: How confused is tiny winy penis?) Mild Shock <janburse@fastmail.fm> - 2026-07-22 09:37 +0200
                Even dogs know Switzerland != Germany [Syphilis Brain Micro Penis] (Re: Decide what you critique tiny winy penis ) Mild Shock <janburse@fastmail.fm> - 2026-07-22 11:19 +0200
                node.js has also Worker isolation , headless (Was: Even dogs know Switzerland != Germany [Syphilis Brain Micro Penis]) Mild Shock <janburse@fastmail.fm> - 2026-07-22 11:29 +0200
                Abyss hobby interpretation vs. professional understanding [Keep up with the Kardashians] (Re: node.js has also Worker isolation , headless) Mild Shock <janburse@fastmail.fm> - 2026-07-22 11:38 +0200
                Play stupid games, win classic Usenet prizes [CCCP Troll] (Re: Abyss hobby interpretation vs. professional understanding [Keep up with the Kardashians]) Mild Shock <janburse@fastmail.fm> - 2026-07-22 12:16 +0200
                Glue Sniffing 5-Year Old Moron [CCCP Troll] (Was: Play stupid games, win classic Usenet prizes [CCCP Troll]) Mild Shock <janburse@fastmail.fm> - 2026-07-22 14:29 +0200
                My Swift Go 16 AI has no IMEI, are you nuts? (Re: Even dogs know Switzerland != Germany [Syphilis Brain Micro Penis]) Mild Shock <janburse@fastmail.fm> - 2026-07-22 14:15 +0200
                Same nickname and email, could post faster [5 year old moron] (Re: My Swift Go 16 AI has no IMEI, are you nuts? ) Mild Shock <janburse@fastmail.fm> - 2026-07-22 14:25 +0200
                I have nothing to hide, you can find me in search.ch (Re: My Swift Go 16 AI has no IMEI, are you nuts?) Mild Shock <janburse@fastmail.fm> - 2026-07-22 14:41 +0200
                Where did I confirm German via .ch, you are more than nuts! (Re: I have nothing to hide, you can find me in search.ch) Mild Shock <janburse@fastmail.fm> - 2026-07-22 14:48 +0200
                Ask a Ukrainian Neighbour to do Detective [CCCP Troll] (Re: Where did I confirm German via .ch, you are more than nuts! ) Mild Shock <janburse@fastmail.fm> - 2026-07-22 14:51 +0200
            Re: Just RTFM the RDNA 3.5 specs! [GPU Cache Lines] (Re: The Cache Identity Crisis by Micro Penis) Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-20 21:36 -0700
              rossy boy is going paranoid (Was: Just RTFM the RDNA 3.5 specs! [GPU Cache Lines]) Mild Shock <janburse@fastmail.fm> - 2026-07-21 09:01 +0200
                Re: rossy boy is going paranoid (Was: Just RTFM the RDNA 3.5 specs! [GPU Cache Lines]) Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-07-21 00:56 -0700
        L1,..,Ln caches are located on the CPU AND on the GPU (Was: The Cache Identity Crisis by Micro Penis( Mild Shock <janburse@fastmail.fm> - 2026-07-20 19:35 +0200
          GPU Cache Hierarchy: Understanding L1, L2, and VRAM (Was: L1,..,Ln caches are located on the CPU AND on the GPU) Mild Shock <janburse@fastmail.fm> - 2026-07-20 19:40 +0200
            Well thats good, co-location, onto the same processor die (Re: GPU Cache Hierarchy: Understanding L1, L2, and VRAM (Was: L1,..,Ln caches are located on the CPU AND on the GPU) Mild Shock <janburse@fastmail.fm> - 2026-07-20 22:02 +0200
              Where is micro penis mental error? (Re: Well thats good, co-location, onto the same processor die (Re: GPU Cache Hierarchy: Understanding L1, L2, and VRAM (Was: L1,..,Ln caches are located on the CPU AND on the GPU) Mild Shock <janburse@fastmail.fm> - 2026-07-20 22:07 +0200
      I didn't find Futex in WebGPU / WGSL (Re: Gemini, DeepSeek, OpenAI all know Dmitriy V'jukov) Mild Shock <janburse@fastmail.fm> - 2026-07-20 23:26 +0200
        There is no imageAtomicAdd in WGSL (Re: I didn't find Futex in WebGPU / WGSL) Mild Shock <janburse@fastmail.fm> - 2026-07-21 00:15 +0200
          OpenGL is dead. Apple said bye bye / Wayland Compositor (Re: There is no imageAtomicAdd in WGSL) Mild Shock <janburse@fastmail.fm> - 2026-07-21 00:26 +0200
          Flogging a Dead Horse, OpenGL is EOL (Re: There is no imageAtomicAdd in WGSL) Mild Shock <janburse@fastmail.fm> - 2026-07-21 01:39 +0200
            imageAtomicAdd trivial, Dmitry Vyukov requires capacity (Re: Flogging a Dead Horse, OpenGL is EOL) Mild Shock <janburse@fastmail.fm> - 2026-07-21 01:40 +0200
              capacity = 2^n for some n / systolic system (Re: imageAtomicAdd trivial, Dmitry Vyukov requires capacity) Mild Shock <janburse@fastmail.fm> - 2026-07-21 01:41 +0200
                Source of the benchmark for DmitryVyukov (Was: capacity = 2^n for some n / systolic system) Mild Shock <janburse@fastmail.fm> - 2026-07-21 01:44 +0200
          Re: There is no imageAtomicAdd in WGSL (Re: I didn't find Futex in WebGPU / WGSL) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-20 16:59 -0700
            I never used OpenGL Version 4.2 and later (Was: There is no imageAtomicAdd in WGSL) Mild Shock <janburse@fastmail.fm> - 2026-07-21 08:47 +0200
              Because of MIMD you have to reassess algorithms (Re: I never used OpenGL Version 4.2 and later) Mild Shock <janburse@fastmail.fm> - 2026-07-21 09:02 +0200
                Re: Because of MIMD you have to reassess algorithms (Re: I never used OpenGL Version 4.2 and later) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-22 13:34 -0700
                Do you see the loops, in C code and in Java code? /** Looping **/ (Was: Because of MIMD you have to reassess algorithms) Mild Shock <janburse@fastmail.fm> - 2026-07-23 00:09 +0200
                Re: Do you see the loops, in C code and in Java code? /** Looping **/ (Was: Because of MIMD you have to reassess algorithms) Mild Shock <janburse@fastmail.fm> - 2026-07-23 00:53 +0200
                Re: Do you see the loops, in C code and in Java code? /** Looping **/ (Was: Because of MIMD you have to reassess algorithms) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-22 18:00 -0700
                Re: Do you see the loops, in C code and in Java code? /** Looping **/ (Was: Because of MIMD you have to reassess algorithms) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-07-22 18:20 -0700
                Why do you even need a mpmc queue? [Thunder Kittens] (Was: Do you see the loops, in C code and in Java code? /** Looping **/) Mild Shock <janburse@fastmail.fm> - 2026-07-24 14:44 +0200
                What does pi in pi-WAM mean? (Re: Why do you even need a mpmc queue? [Thunder Kittens]) Mild Shock <janburse@fastmail.fm> - 2026-07-24 14:53 +0200
                OR-parallelism or AND-parallelism? [MapReduce] (Was: What does pi in pi-WAM mean?) Mild Shock <janburse@fastmail.fm> - 2026-07-24 15:00 +0200
                It is all on GitHub , for the 100-th time! (Re: What does pi in pi-WAM mean?) Mild Shock <janburse@fastmail.fm> - 2026-07-24 20:13 +0200

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