Re: [Rd] syntax difference clusterExport in parallel and snow
On 12/13/2016 09:33 AM, Prof Brian Ripley wrote:
On 13/12/2016 17:05, Paul Johnson wrote:
We got some errors and eventually figured out that
parallel::clusterExport second argument is "varlist" while in
snow::clusterExport it is "list".
The user had loaded parallel first, but did something else which
inadvertently loaded snow, then clusterExport failed because we had
"varlist" and not "list".
Are these different on purpose?
Yes.
('list' is an unhelpful name for an argument that is not a list.)
Yes 'list' is a misleading name for a character vector. OTOH I guess
snow::clusterExport() was just following the lead of base::save() and
base::remove() on this.
I don't see 'varlist' as being much less confusing though: it still
suggests that the thing is a list and parallel::clusterExport() is
now inconsistent with snow::clusterExport(). So it doesn't really
address the 1st problem and introduces a new one. Sounds like using
a plural form instead of the "list" prefix would be less confusing
e.g. 'vars', 'varnames', 'objnames' or something like that.
H.
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Hervé Pagès
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
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E-mail: hpa...@fredhutch.org
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Re: [Rd] syntax difference clusterExport in parallel and snow
On 13/12/2016 17:05, Paul Johnson wrote:
We got some errors and eventually figured out that
parallel::clusterExport second argument is "varlist" while in
snow::clusterExport it is "list".
The user had loaded parallel first, but did something else which
inadvertently loaded snow, then clusterExport failed because we had
"varlist" and not "list".
Are these different on purpose?
Yes.
('list' is an unhelpful name for an argument that is not a list.)
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
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[Rd] syntax difference clusterExport in parallel and snow
We got some errors and eventually figured out that parallel::clusterExport second argument is "varlist" while in snow::clusterExport it is "list". The user had loaded parallel first, but did something else which inadvertently loaded snow, then clusterExport failed because we had "varlist" and not "list". Are these different on purpose? pj -- Paul E. Johnson http://pj.freefaculty.org Director, Center for Research Methods and Data Analysis http://crmda.ku.edu To write to me directly, please address me at pauljohn at ku.edu. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
