R help - Sep 2010 - Problems in snow: can't open connection with nodes

I'm working with snow and created a local cluster. So far, the same code has
always worked (please see below). However, now I receive a message that the
connection with the nodes cannot be opened. I restarted my workstation but
that didn't help. Is there a known solution for this problem? Thanks a lot
for any help.

bram foubert


library(snow)
cl
makeSOCKcluster(c("localhost","localhost","localhost","localhost","localhost","localhost","localhost"))
nrslaves = length(cl)
 
CreateData= function(path){
...
}

clusterApply(cl,c("bgcdata1.txt","bgcdata2.txt","bgcdata3.txt","bgcdata4.txt","bgcdata5.txt","bgcdata6.txt","bgcdata7.txt"),CreateData)
Error in checkForRemoteErrors(val) : 
  7 nodes produced errors; first error: cannot open the connection

-- 
View this message in context:
http://r.789695.n4.nabble.com/Problems-in-snow-can-t-open-connection-with-nodes-tp2529692p2529692.html
Sent from the R help mailing list archive at Nabble.com.

This is a problem a few of us have experienced with snow, and there is a 
discussion on the R-hpc list about this. No solution yet, as far as I 
can tell.

Abhijit
On 9/7/2010 9:18 AM, bfoubert wrote:
> I'm working with snow and created a local cluster. So far, the same
code has
> always worked (please see below). However, now I receive a message that the
> connection with the nodes cannot be opened. I restarted my workstation but
> that didn't help. Is there a known solution for this problem? Thanks a
lot
> for any help.
>
> bram foubert
>
>
> library(snow)
> cl >
makeSOCKcluster(c("localhost","localhost","localhost","localhost","localhost","localhost","localhost"))
> nrslaves = length(cl)
>
> CreateData= function(path){
> ...
> }
>
>
clusterApply(cl,c("bgcdata1.txt","bgcdata2.txt","bgcdata3.txt","bgcdata4.txt","bgcdata5.txt","bgcdata6.txt","bgcdata7.txt"),CreateData)
> Error in checkForRemoteErrors(val) :
>    7 nodes produced errors; first error: cannot open the connection
>
>    
	[[alternative HTML version deleted]]