[R] increasing the # of socket connections

Prof Brian Ripley ripley at stats.ox.ac.uk
Fri Aug 25 17:47:40 CEST 2006


On Fri, 25 Aug 2006, Marc Kirchner wrote:

> Dear "R-help"ers,
> 
> using snow on socket connections, I ran into the following error
> 
> 	>  cl <- makeSOCKcluster(hosts)
> 	Error in socketConnection(port = port, server = TRUE, 
> 	blocking = TRUE : all connections are in use
> 
> with "showConnections(all=T)" showing 50 open connections.
> 
> As - for administrative reasons - I would prefer to use snow's
> SOCK capabilities (instead of MPI and the like), I wonder if there is a
> way to increase the number of simultaneous open connections allowed in
> an R session (~100 would be sufficient).

If you really need them open at once (and are not just forgetting to close 
them), then change the constant in the file and recompile.

> Any help/hints are greatly appreciated,

Is this the appropriate list: not on my reading of the posting guide!

> best regards,
> Marc

-- 
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)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



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