R help - Mar 2009 - Snow Parallel R: makeCluster with more nodes than available

Hi all,
	I would like to know what would happen if using snow I create a cluster
of size 50, for example using makeCluster(50,type='SOCK') on a machine
with 2 Cores and run a function. Does snow run 25 and 25 functions on
each of my 2 "real" processors or it just run 50 functions in one
processor ?
Thanks.

Ubuntu Diego wrote:
> Hi all,
> 	I would like to know what would happen if using snow I create a cluster
> of size 50, for example using makeCluster(50,type='SOCK') on a
machine
> with 2 Cores and run a function. Does snow run 25 and 25 functions on
> each of my 2 "real" processors or it just run 50 functions in one
> processor ?
It will run the 50 in parallel and is not advisable to do so on a 
machine with 3 cores - a slow down due to "administrative" overhead is
expected.

Uwe Ligges


> Thanks.
> 
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