[R-sig-hpc] doSMP warnings and crash on WinXP

[Cedrick Johnson]

I think I found out what was causing the problem and it seems to be 
working now for the time being:

c:\Documents and Settings\username\Local Settings\Temp

In the directory boost_interprocess when I create the workers using 
startWorkers a file named: doSMP1(Shm) gets created. When things are 
working normally, after I issue stopWorkers this file is supposed to be 
deleted. What happened previously was this file did not get deleted and 
thus why I got the original warnings (and RStudio crashed) below.

I manually just cleaned out the temp folder, restarted and everything 
appears to be working normally now.

Thanks
c


Original Message >>>>
Howdy-

When I first initialize a doSMP object (specifying two cores) as below,
within RStudio (latest) it crashes the app. I brought up the regular R
console (2.13.0) and tried to do the same thing but received some
interesting warnings:

  >  library(doSMP)
Loading required package: foreach
Loading required package: iterators
Loading required package: codetools
foreach: simple, scalable parallel programming from Revolution Analytics
Use Revolution R for scalability, fault tolerance and more.
http://www.revolutionanalytics.com  <http://www.revolutionanalytics.com/>
Loading required package: revoIPC
  >  tmp = startWorkers(2)
Warning messages:
1: In startWorkers(2) : there is an existing doSMP session using doSMP1
2: In startWorkers(2) : there is an existing doSMP session using doSMP2
  >

Here's my dillemma. Where is said existing doSMP session? Could it be a
"dirty" file leftover somewhere from a previous call that's causing this
to 1) crash RStudio and 2) generate these warnings? A quick look at the
processlist doesn't show anything running. I've even tried doing this
after a clean reboot with the same error.

SessionInfo:

R version 2.13.0 (2011-04-13)
Platform: i386-pc-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United
States.1252
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base

other attached packages:
[1] doSMP_1.0-1     revoIPC_1.0-3   foreach_1.3.2   codetools_0.2-8
iterators_1.0.4
[6] rcom_2.2-3.1    rscproxy_1.3-1

loaded via a namespace (and not attached):
[1] tools_2.13.0

Thanks for any guidance.

c