[R] makeCluster help needed

[Uwe Ligges]

Can you please upgrade R to R-3.0.2 and use the parallel package?
And can you please explain why you want to start the workers manually? 
I'd be happy to look into the details if you can reproduce the problem 
with a recent version of R and the parallel package.

Best,
Uwe Ligges





On 28.09.2013 03:20, Jeffrey Flint wrote:
> This is in regards to the SNOW library.
>
> I'm using Windows.  The problem is that makeSOCKcluster hangs in R as well
> as the DOS command line.  Below I've shown that it completes the Rscript
> until it reaches the line "slaveLoop(master)" , at which point it hangs.
>
> =============================
>
> In R:
>
>> cl <-
> makeSOCKcluster(names=c("localhost","localhost"),manual=T,outfile="jeff.log")
> Manually start worker on localhost with
>       C:/PROGRA~1/R/R-214~1.2/bin/Rscript.exe "C:/Program
> Files/R/R-2.14.2/library/snow/RSOCKnode.R" MASTER=localhost PORT=11590
> OUT=jeff.log SNOWLIB=C:/Program Files/R/R-2.14.2/library
> [HANGS]
> ================================
>
> On the DOS Command Line:
>
> C:\Documents and Settings\Jeff>C:/PROGRA~1/R/R-214~1.2/bin/Rscript.exe
> "C:/Program Files/R/R-2.14.2/library/snow/RSOCKno
> de.R" MASTER=localhost PORT=11590 OUT=jeff.log SNOWLIB=C:/Program
> Files/R/R-2.14.2/library
> [HANGS]
> ^C
> C:\Documents and Settings\Jeff>type jeff.log
> starting worker for localhost:11590
>
> ====================================
>
>
> In the file RSOCKnode.R, stalls after last line, after executing
> "slaveLoop(master)".
>
>
>
>
> local({
>      master <- "localhost"
>      port <- "8765"
>      snowlib <- Sys.getenv("R_SNOW_LIB")
>      outfile <- Sys.getenv("R_SNOW_OUTFILE")
>
>      args <- commandArgs()
>      pos <- match("--args", args)
>      args <- args[-(1 : pos)]
>      for (a in args) {
>          pos <- regexpr("=", a)
>          name <- substr(a, 1, pos - 1)
>          value <- substr(a,pos + 1, nchar(a))
>          switch(name,
>                 MASTER = master <- value,
>                 PORT = port <- value,
>                 SNOWLIB = snowlib <- value,
>                 OUT = outfile <- value,
>                 RANK = rank <- value,
>                 TMPWS = tmpWsName <- value)
>      }
>      ##**** these should be passed as arguments to makeNWSmaster
>      Sys.setenv(MASTER = master)
>      Sys.setenv(PORT = port)
>      Sys.setenv(RANK = rank)
>      Sys.setenv(TMPWS = tmpWsName)
>
>      if (! (snowlib %in% .libPaths()))
>          .libPaths(c(snowlib, .libPaths()))
>      library(methods) ## because Rscript as of R 2.7.0 doesn't load methods
>      library(nws)
>      library(snow)
>
>      sinkWorkerOutput(outfile)
>      master <- makeNWSmaster()
>      sendData(master, "ping")
>      cat("starting NWS worker\n")
>      slaveLoop(master)
> })
>
> 	[[alternative HTML version deleted]]
>
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