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

[Liaw, Andy]

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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> >>> PLEASE do read the posting guide
> >>> http://www.R-project.org/posting-guide.html
> >>> and provide commented, minimal, self-contained, reproducible code.
> >>>
> >>>
> >>>    
> >>>
> >> ______________________________________________
> >> R-help at 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 at 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 at 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.
> 
>