[GRASS-user] Re: Virtual memory available to cygwin GRASS

[Luigi Ponti]

From: Jonathan Greenberg <greenberg at ucdavis.edu>
> Subject: Re: [GRASS-user] Virtual memory available to cygwin GRASS
> To: grass-user <grass-user at lists.osgeo.org>
> Message-ID: <4791267C.3080700 at ucdavis.edu>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> There are ongoing issues with various windows incarnations of GRASS.  
> Cygwin has had some issues with large files and higher memory addressing 
> pretty much since its incarnation (I wrestled with this quite a bit a 
> few years back).  You might want to try the new grass binary that relies 
> on mingw, I've seen my memory spike higher than 1gb during some 
> analyses...  
Thanks, I have that installed for testing but most of what I do with 
GRASS involves batch processing via bash scripts that also call d.mon, 
so I have to stick to Cygwin for now.
> or, install unix someplace!
>   
I have done that on every windows machine I have worked with, by 
installing Ubuntu/GRASS dual boot (as suggested on this ML). I still 
keep working also under windows because many (should I say all?) people 
and institutions I collaborate with require a windows version of everything.

I look forward to start experimenting with GRASS/d.mon functionality and 
meanwhile try to get some experience with Python, as this seems the 
future direction for cross-platform batch processing in GRASS -- am I wrong?

Thanks,

Luigi
> --j
>   
Luigi Ponti wrote:

>> Hello,
>>
>> As a less-than-two-year old cygwin/GRASS user, I have never seen 
>> virtual memory going over 1 GB while doing intensive computations with 
>> GRASS (e.g., v.surf.idw interpolation). I haven't found much on the 
>> topic in the web so I tried the following to increase virtual memory 
>> available to cygwin:
>> http://sources.redhat.com/ml/cygwin/2003-02/msg00234.html
>>
>> but noticed no difference and so I am wondering whether cygwin/GRASS 
>> gets compiled with the -mno-cygwin flag that apparently allows 
>> programs to allocate up to 1920 MBytes:
>> http://sourceware.org/ml/cygwin/2005-04/msg01309.html
>>
>> Does anybody has experience with this?
>>
>> Thanks and regards,
>>
>> Luigi
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>>     
>
>   

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