[R-sig-Geo] Parallelized kriging in R (gstat/intamap)

Edzer Pebesma edzer.pebesma at uni-muenster.de
Mon Dec 6 11:41:09 CET 2010

The documentation for package intamap suggest that you first download
and load package doSNOW from CRAN, and then pass the nclus parameter
with a number larger than 1, as argument:

interpolate(..., optList=list(nclus=2))

Looking at the code, it tries to set up nodes on localhost, so for
distributing load over a cluster composed of different machines, you (or
we) would have to modify the code.

Package gstat has a demo script, demo(snow), that shows how to
distribute predictions over multiple hosts.

On 12/06/2010 03:41 AM, Pierre Roudier wrote:
> Dear list,
> I've been wanting to parallelize kriging using R - on a cluster.
> I am not aware of any parallelized method in gstat (which I'm an avid
> and happy user), and I'm just discovering the intamap package (which
> looks awesome) which seems to have that sort of capability (using the
> nclus parameter). However, I don't really get how to use it.
> Any pointers?
> Cheers,
> Pierre
> .
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Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763  http://ifgi.uni-muenster.de
http://www.52north.org/geostatistics      e.pebesma at wwu.de

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