[R-pkg-devel] Re-building vignettes had CPU time 9.2 times elapsed time

[Dirk Eddelbuettel]

On 24 August 2023 at 07:42, Fred Viole wrote:
| Hi, I am receiving a NOTE upon submission regarding the re-building of
| vignettes for CPU time for the Debian check.
| 
| I am unable to find any documented instances or solutions to this issue.
| The vignettes currently build in 1m 54.3s locally and in 56s on the Win
| check.
| 
| https://win-builder.r-project.org/incoming_pretest/NNS_10.1_20230824_132459/Debian/00check.log

Please see, inter alia, the long running thread

   "Trouble with long-running tests on CRAN debian server"

started earlier this week (!!) on this list covering exactly this issue.

We can only hope CRAN comes to understand our point that _it_ should set a
clearly-identifable variable (the OpenMP thread count would do) so that
package data.table can this for its several hundred users.

As things currently stand, CRAN expects several hundred packages (such as
your, guessing there this comes from data.table which I do not know for sure
but you do import it) to make the change which is pretty close to the text
book definition of madness.

Also see https://github.com/Rdatatable/data.table/issues/5658 with by now 24
comments.  It is on the same issue.

Uwe, Kurt: Please please please set OMP_THREAD_LIMIT to 2 on the Windows and
Debian machines doing this test.

Dirk

-- 
dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org