Displaying 5 results from an estimated 5 matches for "setdefaultclusteroptions".
2006 Apr 20
1
Parallel computing with the snow package: external file I/O possible?
...oud()) should be independent. However, in the code below, the
directory created by each node has the same random number in its name.
I was expecting the contents of fun() or fn() to be independent from all
other executions of the same function. What am I missing here?
# Begin code
library(snow)
setDefaultClusterOptions(outfile="/tmp/cluster1")
setDefaultClusterOptions(master="moab")
cl <- makeCluster(c("moab", "escalante"), type="SOCK")
# Define base pathname for output from my.test()
base.dir <- "~"
# Define a function that is called by clusterC...
2006 Mar 13
1
Parallel computing with the snow package: external file I/O possible?
...sin, 2)
> [[1]]
> [1] 0.9092974
>
> [[2]]
> [1] 0.9092974
>
I do indeed get the above result, so I presume the network setup is ok.
Next I tested a function that creates a file. Here is the code that I
sourced from the master ("moab"):
# begin script
library(snow)
setDefaultClusterOptions(outfile="/tmp/cluster1")
setDefaultClusterOptions(master="moab")
cl <- makeCluster(c("moab", "escalante"), type="SOCK")
# Define base pathname for output from my.test()
base.dir <- "./test"
# Define a function that includes some f...
2009 Apr 09
0
Connecting to "heterogenous" cluster using makeSOCKcluster of SNOW-package
...ccess right:
ls -l ~/R/i686-suse-linux-gnu-library/2.8/snow/RSOCKnode.R
-rwxrwxrwx 1 GEOECOLOGY\francke GEOECOLOGY\mitarbeiter 911 7. Apr 14:51
/home/GEOECOLOGY/francke/R/i686-suse-linux-gnu-library/2.8/snow/RSOCKnode.R
In contrast, creating explicitly "homogenous" cluster works:
> setDefaultClusterOptions(homogeneous = TRUE)
> cl <- makeSOCKcluster("localhost")
Since I intend to use really "inhomgenous" clusters, I followed the
respective instructions given on
http://www.stat.uiowa.edu/~luke/R/cluster/cluster.html#Section:InhomogeneousSystems.
I also tried the modifi...
2009 Jan 09
1
snow and different R versions
Dear Luke and others,
I have many R versions on my machine and want to start a particular
one when snow builds its cluster. (The same version I start snow
from.) It seems that everything is set up correctly in
defaultClusterOptions:
> mget(ls(defaultClusterOptions), defaultClusterOptions)
$homogeneous
[1] TRUE
$manual
[1] FALSE
$master
nodename
"maya.unil.ch"
$outfile
[1]
2008 May 14
0
Parallel computing with rgenoud and snow: external file I/O possible?
...reaking.
working.dir <- "/projects/dhsvm/uvm/test/rhelp/"
results.file <- "test_results.txt" # file to save results in
# Set up the cluster
this.host <- system("hostname", intern=T)
node <- c(this.host, "escalante") # add additional nodes here
setDefaultClusterOptions(master=this.host, type="SOCK", homogeneous=T,
outfile="/tmp/cluster1")
cl <- makeCluster(node)
#clusterSetupRNG(cl) # init random number generator to ensure each node
has a different seed
# Define the function that will be called by genoud()
drive.calib <- function(xx) {...