[SciPy-user] 'from scipy import linalg' fails

Klubok, Igor Igor.Klubok@sac....
Fri May 8 12:15:40 CDT 2009


Hi David,

I am installing scipy for quant researchers and do need the most optimized version of blas there is. Therefore, I chose ATLAS.

ATLAS offers an example of ATLAS/lapack combination on Red Hat. 
I follow every step of the way exactly as it's stated in the atlas_install.pdf document. 

I still run into the issue of "undefined symbol: srotmg_"

I am wondering if the version of gcc 3.2.3 has anything to do with it.

What details do I need to provide here for analysis?

Thank you,
Igor


-----Original Message-----
From: scipy-user-bounces@scipy.org [mailto:scipy-user-bounces@scipy.org] On Behalf Of David Cournapeau
Sent: Thursday, May 07, 2009 9:35 AM
To: SciPy Users List
Subject: Re: [SciPy-user] 'from scipy import linalg' fails

Hi Igor,

On Thu, May 7, 2009 at 10:07 PM, Klubok, Igor <Igor.Klubok@sac.com> wrote:
> Good morning,
>
>  I installed scipy 0.7.0 and numpy 1.3.0 on 64bit RedHat Linux 3 ES 
> (kernel 2.4.21-37.Elsmp, AMD-based hardware)
>
>  Since there was a known bug for incomplete blas packags on RedHat, I 
> properly compiled lapack 3.1.1 and atlas 3.8.3 and installed the 
> resultant files in /usr/local/lib/atlas dir. I set up an env var 
> ATLAS=/usr/local/lib/atlas/lib prior to scipy build/install process.

Your ATLAS is not correctly built. Unless you really need the extra speed, you should use the basic blas/lapack from netlib.org, they are much easier to build.

cheers,

David
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