Murry,

Thank you so much for your quick reply.
That helps me out.

Best,
Zhongyi

On Tue, Mar 1, 2011 at 9:21 PM, Murray Stokely <murray@stokely.org> wrote:

> There is probably a more direct way to do this with SNOW, but one way
> you can change the priority of a running R instance on Unix is with
> renice.  You could use this as the first R code your spawned tasks run
> :
>
> > system(paste("renice 10 -p", Sys.getpid()))
> 20121: old priority 0, new priority 10
>
> There's probably a way to hook this or similar commands into the
> initialization code when spawning the worker tasks with SNOW.
>
>            - Murray
>
> On Tue, Mar 1, 2011 at 7:09 PM, Zhongyi Yuan <zhongyi-yuan@uiowa.edu>
> wrote:
> > Dear R users:
> >
> > I am doing parallel computing by the SNOW package on Linux workstations.
> > According to the university's policy, one has to set a "nice" value of at
> > least 10 (Initiating R with the command *nice -n 10 R* does the job) for
> a
> > long-running process, to lower its priority.
> >
> > The problem I have is though I can set a "nice" value for R in the mater,
> I
> > don't know how it can be done in the slaves. All R processes in the
> slaves
> > have to be niced before they start.
> >
> > Can anyone help me with this? I'd appreciate it.
> >
> > Best,
> > Zhongyi
> >
> >        [[alternative HTML version deleted]]
> >
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> > https://stat.ethz.ch/mailman/listinfo/r-sig-hpc
> >
>

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