On 19/12/2012 18:57, Jannis wrote:
Dear list,
i have some problems using the snow package to create a SOCK cluster.
The errors just occour irregularly but it seems to me that they occour
when I try to create more than one cluster on the same machine via
different R instances started via submitting LSF jobs to a cluster. Does
anyone have an idea how to solve this or where to start digging for
solutions?
Yes.
My guess is that you are starting snow clusters simultaneously. The
message gives you a pretty big clue: use different ports for different
clusters (it is an option to makeCluster).
Also that that it is over a year since snow was superseded by an
improved version in package 'parallel', so why are you still using the
original?
The error messages are:
library(snow)
cl <- makeCluster(8, type = "SOCK")
Error in socketConnection(port = port, server = TRUE, blocking = TRUE, :
cannot open the connection
Calls: run.call ... makeCluster -> makeSOCKcluster -> newSOCKnode ->
socketConnection
In addition: Warning message:
In socketConnection(port = port, server = TRUE, blocking = TRUE, :
port 10187 cannot be opened
R version 2.15.1 (2012-06-22)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=C LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices datasets utils methods base
other attached packages:
[1] snow_0.3-10
Thanks a lot
Jannis
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