Parallel π-WAM: JavaScript Workers as CPU Backend (Re: Parallel π-WAM: 1.7 Giga Lips on a CPU)

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From	Mild Shock <janburse@fastmail.fm>
Newsgroups	comp.lang.javascript
Subject	Parallel π-WAM: JavaScript Workers as CPU Backend (Re: Parallel π-WAM: 1.7 Giga Lips on a CPU)
Date	Mon, 20 Jul 2026 19:28:15 +0200
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Hi,

We recently implemented a parallel π-WAM on
a CPU backend and could demonstrate an
estimated 1.7 Giga Lips. This CPU backend
was written in Java, uses Java platform
threads and is meanwhile part of library(edge/
brainfog). In the following we report first
porting steps to JavaScript.

With the adoption of JavaScript workers we
embrace preemptive multithreading, even
for a Web Prolog, and depart from Dogelog
Players cooperative multitasking. The design
also adopts SharedArrayBuffer to replicate
the Java heap, that is shared among
Java platform threads.

Bye

See also:

Parallel π-WAM: JavaScript Workers as CPU Backend
https://medium.com/2989/5ef903e5e785

Mild Shock schrieb:
 > Hi,
 >
 > We recently implemented a parallel π-WAM
 > on a GPU backend and could demonstrate an
 > estimated 11.4 Giga Lips. In this post we
 > report a further experiment, this time
 > presenting a parallel π-WAM on a CPU backend,
 > that can lift specialized Prolog, currently
 > to 1.7 Giga Lips performance.
 >
 > Having an excess number of threads is a
 > bad idea. What if we do context switching
 > on our own? With this approach we could
 > bring down the execution time of 128 Hack
 > VMs by 33%. We estimate for the test which
 > had 11.4 GLips on the GPU, that we reach
 > 1.7 GLips on the CPU.
 >
 > Bye
 >
 > See also:
 >
 > Parallel π-WAM: 1.7 Giga Lips on a CPU
 > https://medium.com/2989/8a984e75af44

Thread

Dogelog Player: 11.4 Giga Lips with a Budget Laptop (Re: ANN: Dogelog Player 2.2.3 (Introducing π-WAM)) Mild Shock <janburse@fastmail.fm> - 2026-07-08 18:42 +0200
  Parallel π-WAM: JavaScript Workers as CPU Backend (Re: Parallel π-WAM: 1.7 Giga Lips on a CPU) Mild Shock <janburse@fastmail.fm> - 2026-07-20 19:28 +0200
    Parallel π-WAM: An Interleaved Synchronous Emulator (Re: Parallel π-WAM: JavaScript Workers as CPU Backend) Mild Shock <janburse@fastmail.fm> - 2026-07-25 03:53 +0200

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