Terry,
The function clusterSetupRNG is using the RNGstream from rlecuyer
package by default. There was a bug in the latest version of the
rlecuyer package (0.3-2). A corrected version (0.3-3) is now sitting in
the queue to be published on CRAN. So it should become available within
the next few days.
Hana
On 2/1/12 8:21 PM, Chien Lin Terry Huang wrote:
Hi all,
I attempted to install "RSPRNG" package in OSX Lion by just selecting
it from the Package Installer menu, and later realised it was a stupid
idea! However, after the installation failed, the error "object
'.lec.Random.seed.table' not found" appeared when I run the following
code:
test = function( iter , cores )
{
cl = makeCluster( cores , type = "SOCK" );
clusterSetupRNG( cl );
registerDoSNOW( cl );
output = foreach( i = 1:iter , .combine = "rbind") %dopar%
{
runif( 1 , 0 , 1 );
}
stopCluster( cl );
output;
}
test( 100 , 2 )
The reason that I wanted to install "RSPRNG", is because I seemed to
get the same "random" number stream every time when I run the code above.
My question is, 1) how can I fix the error. 2) How can I avoid getting
the same random number stream for each nodes?
Many thanks
Terry
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