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

Liaw, Andy andy_liaw at merck.com
Fri Aug 11 21:24:13 CEST 2006

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.


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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