similar to: snow package, socketConnection error, SSH, in Windows 7 x64

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? The error messages

Hi, I am attempting to implement a mixed (windows/linux) snow sockets parallelism in R, but am running into difficulties similar to a post made Aug 31, 2006 under the same subject heading. I feel like I may be one or two non-obvious steps away from getting it all working, but I'm stuck. If anyone can shed some light on this (I believe Prof. Tierney stated that he has successfully run a

Platform: Windows Version: 1.6.2 When first called, socketConnection gives an error. On subsequent calls it performs correctly. Thus the first call has the effect of "priming" the connection. Eg > socketConnection(port=50) Error in socketConnection(port = 50) : unable to open connection In addition: Warning message: localhost:50 cannot be opened > MIM <-

Hi, I am a newbie to R and trying to implement parallelism in R. I am currently using R-2.3.1, and Cygwin to run R on Windows xp. ssh and all are working fine, When I try to create a socket connection as makeSOCKcluster(c("localhost","localhost")), it just waits for the other prcess on localhost to get created and respond. But this other process is

When trying to create (a very simple) cluster using makeSOCKcluster or makeCluster I get the following error message: > library(snow) > cl <- makeSOCKcluster("localhost") Fatal error: kann Datei '~/R/i686-suse-linux-gnu-library/2.8/snow/RSOCKnode.R' nicht ?ffnen: Datei oder Verzeichnis nicht gefunden (translation: could not open file [...]: File or directory not

Dear "R-help"ers, using snow on socket connections, I ran into the following error > cl <- makeSOCKcluster(hosts) Error in socketConnection(port = port, server = TRUE, blocking = TRUE : all connections are in use with "showConnections(all=T)" showing 50 open connections. As - for administrative reasons - I would prefer to use snow's SOCK capabilities (instead

Dear All I have sucessfully created cluster of four nodes using localhost in my local machine by executing the following command > cl<-makePSOCKcluster(c(rep("localhost",4)),outfile='',homogeneous=FALSE,port=11001) starting worker pid=4271 on localhost:11001 at 12:12:26.164 starting worker pid=4280 on localhost:11001 at 12:12:26.309 starting worker pid=4289 on

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]

Hello All, I can run the "lower level" functions OK, but many of the higher level (eg. parSApply) functions are generating errors. When running the example (from the snow help docs) for parApply on MacOSX 10.5.5, I get the following error: cl <- makeSOCKcluster(c("localhost","localhost")) sum(parApply(cl, matrix(1:100,10), 1, sum)) Error in

Hello all; I'm trying to execute parallel jobs trough library snow on a cluster built through torque/PSB. I'm succesfully obtaining the cluster with: >system("cat $PBS_NODEFILE > cluster.txt") >mycluster <- scan(file="cluster.txt",what="character") >cl <- makeSOCKcluster(mycluster) The only problem, at the moment, is that if I use

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 =

Hi I try parallelising some code using the snow package and the following lines: cl <- makeSOCKcluster(8) pfunc <- function (x) (if(x <= (-th)) 1 else 0) ###correlation coefficient clusterExport(cl,c("pfunc","th")) cor.c.f <- parApply(cl,tms,c(1,2),FUN=pfunc) The parApply results in the error message: > cor.c.f <- parApply(cl,tms,c(1,2),FUN=pfunc) Error

FYI, for the last few revision the version string for both R v2.14.0 patched and R devel are not correct for the Windows binaries. This is what R --version and sessionInfo() report since a couple of days: R version 2.14.0 Patched (2006-00-00 r00000) R Under development (unstable) (2006-00-00 r00000) Also, "r00000" is listed as the revision on:

A new version of the 'snow' package for parallel computing in R is available at http://www.stat.uiowa.edu/~luke/R/cluster/snow_0.3-3.tar.gz This substantially revises the way in which worker processes are started to allow snow to be used on Windows and Mac/Windows/Linux combinations. I have successfully used the SOCK version on a standalone Windows machine and combinations of

Hi, While I suspect that this is an issue peculiar to my machine (Debian squeeze amd64, R version 3.0.1, up-to-date packages), I'm hoping that somebody on this list may be able to give me suggestions on how to troubleshoot and fix the following: > library (snow) > cl <- makeSOCKcluster(c("localhost","localhost")) sh: 1: RunSnowWorker: not found I presume/hope

Hi Greg, I don't know if this is related to your problem, but I get the same error (on both ubuntu and fedora linux, R 2.9) and just found a very curious behaviour - snowfall apply functions don't like the variable name "c". E.g.: c<-1 sfLapply(1:10, exp) issues the same error you had posted, while subsequent rm("c") sfLapply(1:10, exp) runs fine. Rainer

I'm trying to setup a snow grid using sockets (Windows 7).  On the test grid (my computer and another) I have an SSHD server up and running, can connect OK via public key authentication.  Running "makeSOCKcluster" on just my local machine works OK.  Running it to the other computer fails.  My SSH logs show the connection accepted, authenticated and then dropped.   I

Dear list, I just realized that one of the examples given in the help page to the function makeCluster of the library(snow) has a small syntax error : ## to get started library(snow) ?makeCluster .. will open a halp page containing the command towards the end of the examples : cl <- makeCluster(c(rep(list(macOptions), 2), rep(list(lnxOptions), 2), rep(list(winOptions),

I am writing a function to make a multi-part form request with binary data. I am running R 1.8.1 on Linux ReadHat. The sockectConnection is initialized with open="a+b" and blocking=TRUE. After writing the Post request using writeChar and writeBin and flushing the connection I use socketSelect to check if the socketConnection is availabe for reading. This call consistently takes 15

Dear All, I am trying to create socket clusters (using snow and snowfall) with a Windows OS. I am running Windows inside VirtualBox and VMware player (i.e., Windows is guest) from a Debian Linux host system (I've tried in two different Linux systems, an AMD x86-64 workstation and an Intel i686 laptop). However, almost always seting up the cluster fails: either R will hang forever or I will