On Feb 6, 2012, at 10:17 AM, Alaios wrote:
My bad..
these are the real matrices
G<-DiagonalGaussian( NumberOfImagePixels,sd=Gsd)
str(G)
num [1:16384, 1:16384] 1400 0 0 0 0 ...
S<-PointSamplingMatrix(EffectiveSensors,NumberOfImagePixels)
str(S)
num [1:10650, 1:16384] 0 0 0 0 0 0 0 0 0 0 ...
A<-S %*% G
You seems confused about the size of your objects. You earlier said
they were [128,128] which we took to mean 128 x 128 matrices, they
are far larger than that. I'm guessing that you are consuming all of
your RAM and paging out to disk. But that is just a guess since you
provided none of the system information that the Posting Guide suggests.
--
David.
_______________________________
From: R. Michael Weylandt <michael.weyla...@gmail.com>
Cc: Paul Hiemstra <paul.hiems...@knmi.nl>; "R-help@r-project.org" <R-help@r-project.org
>
Sent: Monday, February 6, 2012 3:39 PM
Subject: Re: [R] R enterprise for linux
Are you sure?
I just ran
N <- 128
system.time(matrix(rnorm(N^2),N) %*% matrix(rnorm(N^2),N))
and it took less than 0.044s on my (old-ish) laptop while doing other
things (and that includes the expensive rng calls). There might be
some other issues in play here. Even N <- 1280 takes < 5 seconds with
the rng call.
Michael
Actually, I would like to speed up matrix multiplication
which is really too slow.
MatrixA %*% MatrixB (each one is a [128,128] table) is running four
hours now... and just imagine that I want to calculate many of those.
Which other alternative do I have?
Regards
Alex
________________________________
From: Paul Hiemstra <paul.hiems...@knmi.nl>
Cc: "R-help@r-project.org" <R-help@r-project.org>
Sent: Monday, February 6, 2012 2:30 PM
Subject: Re: [R] R enterprise for linux
Dear Alex,
By Enterprise R, do you mean Revolution R? I can also only find red
hat packages. You could send them an e-mail to ask for sources.
They
probably want to help you, especially when you pay. But why do you
need RevoR and not standard R.
Paul
On 02/06/2012 12:55 PM, Alaios wrote:
Dear all,
I would like to ask you if it would be possible to install R
enterprise in opensuse.
Actually it seems that there are only Red Hat packages and I was
wondering if their source code is available so one to try and
compile it. I would like to thank you in advance for your reply
Regards
Alex [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org
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--
Paul Hiemstra, Ph.D.
Global Climate Division
Royal Netherlands Meteorological Institute (KNMI)
Wilhelminalaan 10 | 3732 GK | De Bilt | Kamer B 3.39
P.O. Box 201 | 3730 AE | De Bilt
tel: +31 30 2206 494 http://intamap.geo.uu.nl/~paul
http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
