[R] multi day R run crashed - is there a log

[Martin Tomko]

Hi Sarah,
thank you very much for your answer. I have been spitting things out on 
screen, but unfortunately I have not run it as a batch log, but in the 
interactive window, so when the GUI crashed I was left without trace... 
I guess I should google how to run it from a batch.

I should also explore using RData, I have ony been using csv files and 
tables so far, it seems that can also bring some added performance.

As the main output of my process is a matrix, I would really need to 
append to a matrix after each iteration. I have identified the 
write.table append parameter-based solution, but that would only append 
rows. Is there a way to slowly "grow" a matrix in both directions, 
meaning append columns as well (it is a big distance matrix).
Thanks a lot for your help,
Cheers
Martin

On 8/25/2010 1:56 PM, Sarah Goslee wrote:
> Oh dear. No there isn't. I do a lot of very long runs, and have learned to write
> out intermediate steps. Depending on what you are doing, saving the RData
> file periodically may be appropriate, or writing out a csv file of
> results so far,
> or even just printing something to the output file (if you are using batch).
>
> There may well be something more elegant, but these solutions have all worked
> well for me in various situations.
>
> Sarah
>
> On Wed, Aug 25, 2010 at 3:46 AM, Martin Tomko<martin.tomko at geo.uzh.ch>  wrote:
>    
>> Dear all,
>> I am using an R 2.10 installation on a Windows 203 server that I have no
>> control over. After a multi-day run I found that it was terminated/crashed.
>> Is there any log kept by R where I could see whether something/what
>> happened? The same process has been run beofre on a smaller dataset (also at
>> least a day of computing) without problems.
>>
>> Thanks
>> Martin
>>      
>    


-- 
Martin Tomko
Postdoctoral Research Assistant

Geographic Information Systems Division
Department of Geography
University of Zurich - Irchel
Winterthurerstr. 190
CH-8057 Zurich, Switzerland

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