Re: Octave for Mac with Reference Lapack

[Alexander Hansen]

On 5/29/12 4:22 AM, Ben Abbott wrote:
> 
> On May 29, 2012, at 3:29 AM, Lukas Reichlin wrote:
> 
>> Hi Alexander
>>
>> Would you help me creating an Octave variant for Fink with reference BLAS 
>> and LAPACK libraries (both included in lapack 3.4.1 from 
>> http://www.netlib.org/lapack/)?
>>
>> The reason for such a variant is that I'm experiencing problems with stuff 
>> like wrong Hankel singular values and non-converging SVDs with both ATLAS 
>> and Apple's Accelerate/Veclib framework. The SLICOT authors recommend that I 
>> use the reference LAPACK implementation from Netlib. It solved the problems, 
>> and now I would like to use reference LAPACK also for Octave itself and not 
>> only my control package.
>>
>> Best regards,
>> Lukas
> 
> Lukas,
> 
> Do you have a simple example that demonstrates the problem ? ... or maybe a 
> link to the details ?
> 
> Ben
> 

I _can_ do it, yeah.  We found under testing that it's best to use the
same LAPACK/BLAS provider for any dependencies of Octave as for Octave
itself, so that's going to entail making variants for Octave, arpack-ng,
and qrupdate.  It'll probably be best to create a package based on
lapack-3.4.1 that all of these can build against.

I'd like to see a test case, too.
-- 
Alexander Hansen, Ph.D.
Fink User Liaison
http://finkakh.wordpress.com/