[R-sig-hpc] Any way to query the setDefaultCluster?

[Jonathan Greenberg]

This would only work immediately afterwards, right?  What about a few
pages of code later?  Basically: if you start a parallel or snow
cluster without preserving the cluster object, it will run with no way
to shut it down, right?  In other words, is there any easy way to
accomplish what snowfall does using parallel and snow?  i.e.:

sfInit()
sfStop()

--j

On Sat, Feb 23, 2013 at 3:14 PM, Etienne B. Racine <etiennebr at gmail.com> wrote:
> Jonathan, maybe .Last.value ?
>
> Etienne
>
>
> 2013/2/23 Jonathan Greenberg <jgrn at illinois.edu>
>>
>> To clarify: if I "forget" to store a cluster object:
>>
>> myfunction <- function()
>> {
>> library("parallel")
>> cl <- makeCluster(2,type="PSOCK")
>> setDefaultCluster(cl)
>> return(cl)
>> }
>>
>> myfunction()
>>
>> Is there any way to stop this running cluster short of quitting out of R?
>>
>> --j
>>
>>
>>
>> On Sat, Feb 23, 2013 at 2:51 PM, Jonathan Greenberg <jgrn at illinois.edu>
>> wrote:
>> > R-sig-hpc'ers:
>> >
>> > If I set a parallel cluster object using setDefaultCluster, is there
>> > any way to recover that object (basically a "getDefaultCluster"
>> > function)?
>> >
>> > --j
>> >
>> >
>> > --
>> > Jonathan A. Greenberg, PhD
>> > Assistant Professor
>> > Global Environmental Analysis and Remote Sensing (GEARS) Laboratory
>> > Department of Geography and Geographic Information Science
>> > University of Illinois at Urbana-Champaign
>> > 607 South Mathews Avenue, MC 150
>> > Urbana, IL 61801
>> > Phone: 217-300-1924
>> > http://www.geog.illinois.edu/~jgrn/
>> > AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307, Skype: jgrn3007
>>
>>
>>
>> --
>> Jonathan A. Greenberg, PhD
>> Assistant Professor
>> Global Environmental Analysis and Remote Sensing (GEARS) Laboratory
>> Department of Geography and Geographic Information Science
>> University of Illinois at Urbana-Champaign
>> 607 South Mathews Avenue, MC 150
>> Urbana, IL 61801
>> Phone: 217-300-1924
>> http://www.geog.illinois.edu/~jgrn/
>> AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307, Skype: jgrn3007
>>
>> _______________________________________________
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>
>



--
Jonathan A. Greenberg, PhD
Assistant Professor
Global Environmental Analysis and Remote Sensing (GEARS) Laboratory
Department of Geography and Geographic Information Science
University of Illinois at Urbana-Champaign
607 South Mathews Avenue, MC 150
Urbana, IL 61801
Phone: 217-300-1924
http://www.geog.illinois.edu/~jgrn/
AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307, Skype: jgrn3007