[SciPy-user] 64 bit support

Nils Wagner nwagner at mecha.uni-stuttgart.de
Tue Mar 7 10:46:17 CST 2006

George Nurser wrote:
> On 7 Mar 2006, at 00:13, Paul Ray wrote:
>> Hi,
>> Does anyone have experience building SciPy on 64 bit linux boxes?
>> Our machine is a dual Opteron, running something like RedHat
>> Enterprise 4.2:
>> xxi1 : 74>uname -a
>> Linux xxi1.nrl.navy.mil 2.6.9-11.ELsmp #1 SMP Thu Jun 16 11:18:13 CDT
>> 2005 x86_64 x86_64 x86_64 GNU/Linux
>> We've been running into problems with numpy/scipy looking for
>> libraries in /usr/lib when it should be using /usr/lib64, so that a
>> simple install with setup.py install doesn't work.  It crashes when
>> you run and it loads those 32 bit libraries.  I think all I need to
>> do is ensure that the library search paths include /usr/lib64 and /
>> usr/X11R6/lib64 and NOT /usr/lib or /usr/X11R6/lib.  What is the easy
>> or "right" way to do this?  Is there an option to setup.py?  Should I
>> make a site.cfg (and where should it reside?)?  Should I edit
>> system_info.py?
>> I assume that this configuration is becoming more common as 64-bit
>> processors show up in more machines, so I'm surprised that setup.py
>> doesn't already figure it out and "do the right thing".  Are we doing
>> something boneheaded?
> I managed to get numpy/scipy/matplotlib set up on a single core (SUN)  
> Opteron running a similar RedHat
> uname -a
> Linux nohow 2.6.9-22.0.2.EL #1 Thu Jan 5 17:03:08 EST 2006 x86_64  
> x86_64 x86_64 GNU/Linux
> (BTW - was the uname -a issued last summer, or is your clock wrong:)
> I'm sure that I did not do it the easy way -- i used a site.cfg --  
> but it worked in the end.
> Since I do not have root privileges  on this computer, and in any  
> case I used the acml libraries, I used a site.cfg file for numpy and  
> scipy.
> I believe that the code has been changed to allow this site.cfg file  
> to reside either in (in decreasing order of priority)
> 1. the directory where you are doing setup.py from
> 2. your home directory $HOME
> 3. the numpy/distutils subdirectory of the root numpy source  
> directory when installing numpy OR (when installing scipy)
>   the distutils subdirectory of the *installed* numpy directory.
> This copying of the site.cfg is now automatically done when numpy is  
> installed.
> numpy  and scipy only seemed to need the site.cfg file to find the  
> acml libraries (or in your case, presumably  the Atlas libraries).  
> The standard setup.py worked fine otherwise.
> FFTW of course has to be set, so that $FFTW/include and $FFTW/lib  
> hold the include files and fftw libraries.
> For matplotlib, I did have to modfy the setupext.py file, replacing
>      libdirs = [os.path.join(p, 'lib')     for p in basedir 
> [sys.platform]
>                 if os.path.exists(p)]
>   by
>      libdirs = [os.path.join(p, 'lib64')     for p in basedir 
> [sys.platform]
>                 if os.path.exists(p)] + \
> 	        [os.path.join(p, 'lib')     for p in basedir[sys.platform]
>                 if os.path.exists(p)]
> in function add_base_flags (~line 104)
> HTH. George.
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Hi George,

Please can you send me your site.cfg.
And how did you set FFTW ?

I look forward to hearing from you.


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