[GRASS-user] 64 bit Python in GRASS 6.4.2

[Orr, Andrew B.]

Thank you everyone that helped with this. I was able to get the 64 bit version of Python and GRASS to play nicely together. 
For the recods, it took uninstalling GRASS and  OSGeo4W from my machine and then reinstalling it with the link Saber provided @ http://download.osgeo.org/osgeo4w/osgeo4w-setup-x86_64.exe

-Andy


-----Original Message-----
From: Alex Mandel [mailto:tech_dev at wildintellect.com] 
Sent: Friday, September 26, 2014 11:37 AM
To: Orr, Andrew B.; grass-user at lists.osgeo.org
Subject: Re: [GRASS-user] 64 bit Python in GRASS 6.4.2

The suggestion is that your reinstall GRASS using the OSGeo4w64 installer. You likely used the OSGeo4w previously, which is a 32 bit bundle of open source geo software. You can't just swap out the python you have to get everything compiled for 64bit.

Thanks,
Alex

On 09/26/2014 08:30 AM, Orr, Andrew B. wrote:
> Thanks Saber,
> I already have GRASS installed, and if I recall the application you linked me to is an interface for installing GRASS? What I'm hoping for is upgrading the version of Python to 64 bit that GRASS is using.
> 
> When I open GRASS and go to the Python shell it says it's using a 32 bit version of Python 2.7.2.
> I know it's a separate installation for ArcGIS to get a 64 bit version of Python installed so I was thinking that GRASS may be the same procedure?
> Thanks,
> -Andy
> 
> 
> 
> From: Saber Razmjooei [mailto:saber.razmjooei at lutraconsulting.co.uk]
> Sent: Friday, September 26, 2014 10:23 AM
> To: Orr, Andrew B.; grass-user at lists.osgeo.org
> Subject: RE: [GRASS-user] 64 bit Python in GRASS 6.4.2
> 
> Hi Andy,
> 
> You can try this:
> http://download.osgeo.org/osgeo4w/osgeo4w-setup-x86_64.exe
> 
> Cheers,
> Saber
> 
> 
> From: grass-user-bounces at lists.osgeo.org<mailto:grass-user-bounces at lists.osgeo.org> [mailto:grass-user-bounces at lists.osgeo.org] On Behalf Of Orr, Andrew B.
> Sent: 26 September 2014 15:46
> To: 'grass-user at lists.osgeo.org'
> Subject: [GRASS-user] 64 bit Python in GRASS 6.4.2
> 
> Hello all,
> I've been working on a r.cost and r.drain python script that is using very large rasters. I've been running into some memory issues with this script due to the size of the rasters. I read about setting the amount of memory that the map can be stored in with the "percent_memory=xx" argument for r.cost, however the performance of running the script is becoming a problem (it takes too long to run for our goal).
> 
> I then started watching the Task Manager and noticed it was peaked out at less ~4 gigs of ram and I realized it's only a 32 bit version of Python installed with GRASS.
> My question is: is there a compatible 64 bit version of Python for GRASS 6.4.x, and if so, how does one install it?
> 
> Thanks for your help!
> -Andy
> 
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