Re: Octave for Mac with Reference Lapack

[Lukas Reichlin]

On 30.05.2012, at 13:03, c. wrote:

> 
> On 29 May 2012, at 23:19, Lukas Reichlin wrote:
> 
>> 
>> I'm surprised to see it working, also on my machine. I fear it doesn't help 
>> much, as Accelerate 10.6 used to be the best out of three:
>> 
>> 1. Accelerate OSX 10.6
>> 2. ATLAS 3.9 from MacPorts
>> 3. Accelerate OSX 10.7
>> 
>> I don't have access to 10.7 this evening, and when I build the variant 
>> 
>>      octave-devel +atlas +fltk +gcc45
>> 
>> from the attached MacPorts portfile, mkoctfile returns
>> 
>> nothing for  $(shell $(MKOCTFILE) -p LAPACK_LIBS)
>> framework veclib for  $(shell $(MKOCTFILE) -p BLAS_LIBS)
> 
> this seems to indicate that although you specified atlas as an option your 
> Octave was linked 
> against the Accelerate framework rather than ATLAS, I'm not an expert in 
> portfile syntax so 
> I don't see where the problem is there.
> 
> To further check whether Octave is actually linking to vecLib you should do 
> something like:
> 
> otool -L /opt/octave/3.7/lib/octave/3.7.0+/liboctave.dylib 
> 
> what I get is the following:
> 
> octave/3.7.0+/liboctave.dylib:
>       /opt/octave/3.7/lib/octave/3.7.0+/liboctave.1.dylib (compatibility 
> version 2.0.0, current version 2.1.0)
>       /opt/octave/3.7/lib/octave/3.7.0+/libcruft.1.dylib (compatibility 
> version 2.0.0, current version 2.0.0)
>       /opt/arpackng/3.0.2/lib/libarpack.2.dylib (compatibility version 3.0.0, 
> current version 3.0.0)
>       /opt/qrupdate/1.1.1/lib/libqrupdate.1.dylib (compatibility version 
> 0.0.0, current version 0.0.0)
>       /sw/lib/libreadline.5.dylib (compatibility version 5.0.0, current 
> version 5.2.0)
>       /sw/lib/ncurses/libncurses.5.dylib (compatibility version 5.0.0, 
> current version 5.0.0)
>       /opt/pcre/8.20/lib/libpcre.0.dylib (compatibility version 1.0.0, 
> current version 1.1.0)
>       /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current 
> version 125.2.11)
>       /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate 
> (compatibility version 1.0.0, current version 4.0.0)
>       /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current 
> version 7.9.0)
>       /System/Library/Frameworks/vecLib.framework/Versions/A/vecLib 
> (compatibility version 1.0.0, current version 268.0.1)
> 
> I think your problem might rather be with mixing up different LAPACK 
> implementations rather than choosing the wrong one.
> 
> 
>> Lukas
> c.

FYI: I added two new tests from real-world data to moen4:

http://octave.svn.sourceforge.net/viewvc/octave/trunk/octave-forge/extra/control-devel/inst/moen4.m?revision=10537&view=markup

The first test uses abs to circumvent the problem with negative signs, the 
second one doesn't.

I'll check your suggestions later this evening.

Lukas