[R] snow package

[Prof Brian Ripley]

On Sun, 12 Jun 2011, Unger, Kristian, Dr. wrote:

> Hi
>
> I try parallelising some code using the snow package and the following lines:
>
> cl <- makeSOCKcluster(8)
> pfunc <- function (x) (if(x <= (-th)) 1 else 0) ###correlation coefficient
>
> clusterExport(cl,c("pfunc","th"))
> cor.c.f <- parApply(cl,tms,c(1,2),FUN=pfunc)
>
> The parApply results in the error message:
>
>> cor.c.f <- parApply(cl,tms,c(1,2),FUN=pfunc)
> Error in do.call("fun", lapply(args, enquote)) :
>  could not find function "fun".
>
> Any ideas?

See the footer of this message: that example is not reproducible. 
What is 'th'?  What is 'tms'?

With some plausible guesses for those this works for me.  The error 
message appears to be from snow's function docall(), but without even 
a traceback(), it is impossible to guess which call to docall() is 
involved.  This is why we ask for a reproducible example.

You are also missing the 'at a minimum' information requested in the 
posting guide.

>
> Best wishes
>
> Kristian
>
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No HTML: seee the posting guide.

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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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