Re: Performance assistance / advice

"Tim Bradshaw (as tfb at cley dot com)" <[email protected]>
Newsgroups gmane.lisp.lispworks.general
Message-ID <[email protected]>
On 12 Mar 2025, at 22:16, David McClain <[email protected]> wrote:
> I believe Scheme was an outgrowth in the late 80s for the Connection Machine??

Almost.  There was Planner, which I don't think ever really existed, and then Conniver which I think was an implementation of something with incoherent semantics.  Then Hewitt invented Actors, and ?Steele and Sussman? wanted to implement Actors in terms of lambda calculus on top of maclisp, and at some point had the blinding realisation that actors and functions (ie lambda expressiona) which never returned but just called another function (their continuation) were the same thing.  The resulting unified language was called 'Schemer'.  But ITS had six-character filenames.

The connection machine thing was *Lisp which I think was built on Genera (or perhaps its predecessors).  *Lisp would be a good thing to look at for ideas for vectorisation, probably (I only ever played with the simulator and I have no idea if it would run in a modern CL).

--tim

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