Re: [R] rpvm/snow packages on a cluster with dual-processor machi nes

From: Liaw, Andy <andy_liaw_at_merck.com>
Date: Tue 15 Aug 2006 - 00:17:52 EST


That's what I've tried before, on three dual-Xeon boxes, so I know it worked (as documented a that time).

Andy

From: Paul Y. Peng
>
> Luke Tierney just reminded me that makeCluster() can take a
> number greater than the number of machines in a cluster. It
> seems to be a solution to this problem. But I haven't tested it yet.
>
> Paul.
>
>
> Ryan Austin wrote:
> > Hi,
> >
> > Adding a node twice gives a duplicate node error.
> > However, adding the parameter sp=2000 to your pvm hostfile should
> > enable dual processors.
> >
> > Ryan
> >
> > Liaw, Andy wrote:
> >
> >> Caveat: I've only played with this a couple of years ago...
> >>
> >> I believe you can just add each host _twice_ (or as many
> times as the
> >> number of CPUs at that host) to get both CPUs to work.
> >>
> >> Andy
> >>
> >> From: Paul Y. Peng
> >>
> >>
> >>> Hi,
> >>>
> >>> does anybody know how to use the dual processors in the
> machines of
> >>> a cluster? I am using R with rpvm and snow packages. I
> usually start
> >>> pvm daemon and add host machines first, and then run R to
> start my
> >>> computing work. But I find that only one processor in
> each machine
> >>> is used in this way and the other one always stays idle. Is there
> >>> any simple way to tell pvm to use the two processors at the same
> >>> time? In other words, I would like to see two copies of R
> running on
> >>> each machine's two processors when using pvm. Any hints/help are
> >>> greatly appreciated.
> >>>
> >>> Paul.
> >>>
> >>> ______________________________________________
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> >>> 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.
> >>>
> >>>
> >>>
> >>>
> >> ______________________________________________
> >> R-help@stat.math.ethz.ch 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.
> >>
> >>
> >
> > ______________________________________________
> > R-help@stat.math.ethz.ch 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.
> >
>
> ______________________________________________
> R-help@stat.math.ethz.ch 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.
>
>



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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. Received on Tue Aug 15 00:27:08 2006

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