rpm package to do the work nice and "transparently"?
B.R
Alex
From: Rainer M Krug
Cc: Ernest Adrogué ; "r-help@r-project.org"
Sent: Tuesday, February 7, 2012 12:08 PM
Subject: Re: [R] using mclapply (multi core apply) to do matrix multipl
What is the nature of the matrices? Are they sparse or derived
from sparse matrices? If they are sparse, have you looked at the
packages available in R for sparse matrices?
library(sos)
summary(sp <- findFn('sparse', 999))
will identify help pages in contri
7-02-2012, 03:32 (-0800); Alaios escriu:
> I wouldl ike to thank you for your response. The hardest part in the
> installation is to find a BLAS library to install. If I understand
> it right once I install BLAS then I only need to change a flag in
> the ./configure of R installation..
>
>
> Our
7-02-2012, 02:31 (-0800); Alaios escriu:
> I would like to thank you Ernest for your answer. I guess that this
> is gonna be faster as right now R only sees one core. In my work
> there is a system with 64 cores and you can see only one working. If
> I understand it right a [m,n][n,k] matrix multi
; "r-help@r-project.org"
*Sent:* Tuesday, February 7, 2012 11:44 AM
*Subject:* Re: [R] using mclapply (multi core apply) to do matrix
multiplication
On 07/02/12 11:31, Alaios wrote:
> I would like to thank you Ernest for your answer. I guess that this
> is gonna be faster as righ
Cc: Ernest Adrogué ; "r-help@r-project.org"
Sent: Tuesday, February 7, 2012 11:44 AM
Subject: Re: [R] using mclapply (multi core apply) to do matrix multiplication
On 07/02/12 11:31, Alaios wrote:
> I would like to thank you Ernest for your answer. I guess that this
> is gonna be
st for these kind of questions.
Cheers,
Rainer
Would that be too weird for mclapply to handle?
B.R Alex
From: Ernest
Adrogué To: r-help@r-project.org Sent: Tuesday,
February 7, 2012 11:02 AM Subject: Re: [R] using mclapply (multi core
apply) to do matrix multi
: Re: [R] using mclapply (multi core apply) to do matrix multiplication
7-02-2012, 00:29 (-0800); Alaios escriu:
> Dear all, I am trying to multiply three different matrices and each
> matrice is of size 16384,16384 the normal %*% multiplciation
> operator has not finished one day now
7-02-2012, 00:29 (-0800); Alaios escriu:
> Dear all, I am trying to multiply three different matrices and each
> matrice is of size 16384,16384 the normal %*% multiplciation
> operator has not finished one day now. As I am running a system with
> many cores (and it seems that R is using only one o
Dear all,
I am trying to multiply three different matrices and each matrice is of size
16384,16384 the normal %*% multiplciation operator has not finished one day
now. As I am running a system with many cores (and it seems that R is using
only one of those) I would like to write fast a brief fun
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