Re: README.MacOS

[Jarno Rajahalme]

On Jan 29, 2011, at 16:16 , ext Ben Abbott wrote:

> On Jan 28, 2011, at 12:27 PM, Jarno Rajahalme wrote:
> 
>> On Jan 27, 2011, at 15:32 , ext Ben Abbott wrote:
>> 
>>> On Jan 27, 2011, at 5:11 AM, Jarno Rajahalme wrote:
>>> 
>>>>> Jarno/Lukas, pls respond at the *bottom* of the email thread, as it makes 
>>>>> it much easier for those arriving late to follow along. Thanks!
>>>>> 
>>>>> Jarno, is MacResearch a part of Apple?
>>>> 
>>>> Sorry for the laziness, takes effort to scroll to the bottom :-)
>>>> 
>>>> On MacResearch, I don't know. I have no other connection to them, other 
>>>> than finding relevant discussion to problems using Apple's version of 
>>>> atlas in 64-bit. According to http://www.macresearch.org/about_macresearch 
>>>> they are independent.
>>>> 
>>>> Jarno
>>> 
>>> What I was wondering is if this bug has been reported to Apple? From your 
>>> prior comment I'd inferred you had, but the link provided was to 
>>> MacResearch ... hence my confusion.
>> 
>> The bugreport.apple.com Problem ID is 7850167, originally filed in 
>> 11-Apr-2010 12:04 AM.
>> 
>> However, I don't think these are publicly visible, hence the link to the 
>> discussion at macresearch.
>> 
>> I made yesterday a wrapper for the Apple BLAS and LAPACK. Today I have been 
>> running tests. The complete BLAS test suite passes all tests, as does LAPACK 
>> linear test suite. However, there are some failures (fails to pass, but does 
>> not crash) in lapack eigenvalue tests. Many of these failures stay even when 
>> testing against lapack 3.1.1 itself, without using the wrapper for Apple 
>> lapack routines. Some failures were resolved by using blas from atlas.
>> 
>> So it seems there are some bugs left in the apple blas/lapack that are not 
>> related to the function calling convention at all. With the wrapper these 
>> seem to affect eigenvalue routines only.
>> 
>> Jarno
> 
> I'm able to search the bug reports, but must enter a "Problem ID", "Date", 
> and "Title". You've provided the first two. Do yo have a title as well?
> 

Sure: "64 bit ABI issue with libBLAS.dylib"

  Jarno