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Re: Speeding up parallel compilation


From: joakim
Subject: Re: Speeding up parallel compilation
Date: Thu, 06 Sep 2012 14:32:08 +0200
User-agent: Gnus/5.130006 (Ma Gnus v0.6) Emacs/24.2.50 (gnu/linux)

Stefan Monnier <address@hidden> writes:

> The recent change I installed which macro-expands Elisp code eagerly
> upon load does not speed up sequential compilation very much, but it
> seems to help parallel compilation significantly: on a 12-core
> 24-threads machine, "make -j24 bootstrap" went down from 2:20 to 1:50,
> and the CPU utilization went up (from 800% to 1000%).
>
> In other words, this mostly sped up a part of the compilation which does
> not parallelize well.  I guess that would be either the construction of
> loaddefs, or the compilation of the compiler.
>
> So, lucky those with manycore systems.

Yay, thus I must get one! BTW was that a dual AMD or Intel btw?

>
>
>         Stefan

-- 
Joakim Verona



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