Re: [Rd] R cmd check and multicore foreach loop

From: Renaud Gaujoux <renaud_at_mancala.cbio.uct.ac.za>
Date: Wed, 17 Aug 2011 13:39:34 +0200

I did notice some strange behaviour once, but things were working without a problem for a while now.
foreach loops and concepts are nice concepts, which I'd like to carry on using.
Maybe somebody from the foreach-dopar packages could explain why they have such issues?

Tim do you have concrete examples of the issues you talked with other developers?

Thank you.

Renaud

On 17/08/2011 12:45, Tim Triche, Jr. wrote:
> yes -- doMC (and doSMP) are kind of bogus and I just use
> multicore::mclapply() to good effect these days. I checked around
> with other people doing similar things at the Bioconductor developer
> day and pretty much everyone confirmed that doWHATEVER seems to have
> issues, where as multicore itself... doesn't.
>
> Just my $0.02,
>
> --t
>
>
> On Wed, Aug 17, 2011 at 1:45 AM, Renaud Gaujoux
> <renaud_at_mancala.cbio.uct.ac.za <mailto:renaud_at_mancala.cbio.uct.ac.za>>
> wrote:
>
> Hi,
>
> in R 2.12.1, R CMD check hangs when building a vignette that uses
> a foreach loop with the doMC parallel backend.
> This does not happen in R 2.13.1, nor if I use doSEQ instead of doMC.
> All versions of multicore, doMC and foreach are the same on both
> my R installations.
>
> Has anybody encountered a similar issue?
>
> Thank you.
> Renaud
>
>
>
>
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>
> If people do not believe that mathematics is simple, it is
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