R help - Apr 2011 - Mclapply and print statement

Dear all.
I am using the mclapply function to split my code to the many cores my system
has. It seems that is working fine. This is the parallel version of lcapply.

The only problem that I seem to have is that the printf cannot print messages. 

The ideal to me is to have fro my function an output of the form
Shadowlist<-mclapply(1:dimz, function(i) {
			      print(sprintf('Creating the %d map',i));
			      GaussRF(x=x, y=y, model=model,
grid=TRUE,param=c(mean,variance,nugget,scale,Whit.alpha))
			    }
	    ) 

'I am the processor %d and I work with the task %d',processorid,i

So far I get not output from my print(sprintf(... function.

What do you think I should try out?

Best Regards
Alex

Hi,

On Mon, Apr 11, 2011 at 5:26 AM, Alaios <alaios at yahoo.com>
wrote:
> Dear all.
> I am using the mclapply function to split my code to the many cores my
system has. It seems that is working fine. This is the parallel version of
lcapply.
>
> The only problem that I seem to have is that the printf cannot print
messages.
>
> The ideal to me is to have fro my function an output of the form
> Shadowlist<-mclapply(1:dimz, function(i) {
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?print(sprintf('Creating the %d
map',i));
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?GaussRF(x=x, y=y, model=model,
grid=TRUE,param=c(mean,variance,nugget,scale,Whit.alpha))
> ? ? ? ? ? ? ? ? ? ? ? ? ? ?}
> ? ? ? ? ? ?)
>
> 'I am the processor %d and I work with the task %d',processorid,i
>
> So far I get not output from my print(sprintf(... function.
>
> What do you think I should try out?
Use `cat`:

R> x <- mclapply(1:20, function(i) cat(i, "\n"))
1
9
17
2
10
18
3
11
19
4
12
20
5
13
6
14
7
15
8
16

-- 
Steve Lianoglou
Graduate Student: Computational Systems Biology
?| Memorial Sloan-Kettering Cancer Center
?| Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact