Several years ago I used Rpy plus RPVM to distributed R computations across
multiple processing nodes (inluding multiple CPU¹s on a single Sun SMP
server), so this should work OK. Note, however, that requires
writing/utilizing code that has been explicitly parallelized.
-Greg
On 6/26/08 12:29PM , "Laurent Gautier" <[EMAIL PROTECTED]> wrote:
> I think that Rmpi creates processes and passes messages between them.
> It *should* work without problems with rpy.
>
> Although, two threads worth a look at:
>
> https://stat.ethz.ch/pipermail/r-devel/2006-October/043218.html
>
> http://tolstoy.newcastle.edu.au/R/e3/devel/07/11/0291.html
>
>
>
>
> 2008/6/26 Sean Davis <[EMAIL PROTECTED]>:
>> > On Thu, Jun 26, 2008 at 12:05 PM, Laurent Gautier <[EMAIL PROTECTED]>
>> wrote:
>>> >> yes.
>> >
>> > Unless you use a package like Rmpi. I have NO idea how that would
>> > work with Rpy, but it is another possibility. Also, I think there has
>> > been some work to vectorize the math libraries.
>> >
>> > Sean
>> >
>>> >> 2008/6/26 laurent oget <[EMAIL PROTECTED]>:
>>>> >>> So if I want to take advantage of my two cores, i need two processes,
>>>> right?
>>>> >>>
>>>> >>> 2008/6/26 Gregory Warnes <[EMAIL PROTECTED]>:
>>>>> >>>>
>>>>> >>>> Hello Laurent,
>>>>> >>>>
>>>>> >>>> The R system itself is not thread safe, and has quite a bit of
>>>>> persistent
>>>>> >>>> state. Therefore if you want to use R from multiple threads, you
>>>>> will need
>>>>> >>>> to arrange to have a single thread interact with R at a time via
>>>>> appropriate
>>>>> >>>> locking or delegation.
>>>>> >>>>
>>>>> >>>> -G
>>>>> >>>>
>>>>> >>>>
>>>>> >>>> On 6/26/08 11:17AM , "laurent oget" <[EMAIL PROTECTED]> wrote:
>>>>> >>>>
>>>>> >>>> fellows,
>>>>> >>>>
>>>>> >>>> did anybody experiment with running rpy in 2 threads?
>>>>> >>>>
>>>>> >>>> ________________________________
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>>>>> >>>> Gregory R. Warnes, Ph.D
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>>>> >>>
>>>> >>>
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Gregory R. Warnes, Ph.D
Program Director
Center for Computational Arts, Sciences, and Engineering
University of Rochester
Tel: 585-273-2794
Fax: 585-276-2097
Email: [EMAIL PROTECTED]
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