Message-ID: <1309178113.14600.2.camel@schmidb-TravelMate8572TG>
Date: 2011-06-27T12:35:13Z
From: Markus Schmidberger
Subject: doSMP warnings and crash on WinXP
In-Reply-To: <4E078026.4030900@cedrickjohnson.com>
I have some similar problems and there was a similar post in R-sig-hpc.
Using the multicore or snow package in combination with Rstudio creates
some strange error. As workers additional Rstudio sessions will be
started. I am currently figuring out what is going wrong.
Best
Markus
Am Sonntag, den 26.06.2011, 14:53 -0400 schrieb 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
>
> _______________________________________________
> R-sig-hpc mailing list
> R-sig-hpc at r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-hpc
--
Dr. rer. nat. Markus Schmidberger
Senior Community Manager
Cloudnumbers.com GmbH
Chausseestra?e 6
10119 Berlin
www.cloudnumbers.com
E-Mail: markus.schmidberger at cloudnumbers.com
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