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Re: Guile 2 vs. Guile 3

From: Jean Abou Samra
Subject: Re: Guile 2 vs. Guile 3
Date: Mon, 28 Nov 2022 00:47:55 +0100
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Le 26/11/2022 à 22:36, Eric Benson a écrit :
In anticipation of the impending release of 2.24, I recently ported my
Lilypond files from 2.22 to 2.23.81. I have about 100 lead sheets with
lyrics, parameterized so that I can easily create them in different keys
and in treble clef or bass clef. There are all in the range of 1 to 2 pages
when typeset. I have a script that generates them in four different keys,
so that's roughly 400 invocations of lilypond.

The time to initialize LilyPond is roughly 0.1s, so 40s of the
5 minutes time are spent just initializing LilyPond 400 times.
Consider passing all the files to 'lilypond' in a single invocation,
which should be faster.

I know that Lilypond 2.24 binary distributions will be built with Guile 2,
not Guile 3, but I thought you might like to know that I was able to build
2.23.81 from source with Guile 3, run my script, and I got what appears to
be the exact same result as I had with the Guile 2 binary distribution.
This was on a Mac Studio with Apple CPU running MacOS Ventura 13.0.1. I'm
not sure if the Guile 3 JIT is enabled in this build, or if it even works
currently on Apple silicon.

A patch was recently posted on the Guile mailing list to add JIT
support on Apple Silicon [1] so I don't think it works currently.

Maybe you will see it failing if you set GUILE_JIT_THRESHOLD=0
in the environment?


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