Re: Paralellizing Lilypond [was: Re: Sibelius Software UK office shutsdown]

[David Kastrup]

Han-Wen Nienhuys <address@hidden> writes:

> On Sat, Aug 11, 2012 at 9:21 AM, Joseph Rushton Wakeling
> <address@hidden> wrote:
>>>> What counts as a "chunk" for the -djob-count option?  It's not clear from
>>>> the
>>>> 2.15 usage manual.
>>>
>>>
>>> I believe it would be a compilable file.
>>
>>
>> Useful to know, thank you!
>>
>> ... but I think it emphasizes my real point: this puts the onus on the user
>> to split up a project into independently-compilable units.  I think that
>> it's worth having Lilypond try and automatically identify independent units,
>> which could have knock-on benefits in terms of minimizing rebuild times for
>> scores.
>
> It would be nice if this were automatically splittable, but the
> reality is that GUILE has no meaningful multithreading support at the
> interpreter level, so almost mutating operation has the potential to
> be a race condition.

Guile 2.0 has threading support.  Whether that will prove usefully
applicable to LilyPond will be a different question.

-- 
David Kastrup