GNU bug report logs - #66277
R build processes use all the available cores

Previous Next

To reply to this bug, email your comments to 66277 AT debbugs.gnu.org.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludovic.courtes <at> inria.fr>
To: bug-guix <at> gnu.org
Subject: R build processes use all the available cores
Date: Sat, 30 Sep 2023 11:51:36 +0200

Hi!

I noticed on guix.bordeaux.inria.fr, which builds guix-cran, that R
build processes would unconditionally use all the available cores
(specifically, launching one R process per core), ignoring the value of
‘parallel-job-count’.

I believe all r-* packages are affected.

On IRC, Ricardo wrote:

--8<---------------cut here---------------start------------->8---
<rekado> the build system uses R CMD INSTALL, which in turn uses
	 install.packages(); that procedure takes an argument Ncpus, which by
	 default is whatever getOption("Ncpus") returns (or 1).  [16:16]
<rekado> that’s used as an argument to ‘make‘ (if it needs to be called)
--8<---------------cut here---------------end--------------->8---

Maybe we should set that ‘Ncpus’ option to what ‘parallel-job-count’
returns?

Ludo’.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.