[Numpy-discussion] numarray dotblas problem on OSX

Robert Kern rkern at ucsd.edu
Thu Apr 28 18:09:53 CDT 2005


Robert Kern wrote:
> Simon Burton wrote:
> 
>> Hi,
>>
>> I have a colleague running Mac OS 10.3, running numarray-1.3.1 (from 
>> fink)
>> who has managed to bomb on this little code example:
>>
>>
>>>>> import numarray as na
>>>>> import numarray.random_array as ra
>>>>> a = ra.random(shape=(257,256))
>>>>> b = ra.random(shape=(1,256))
>>>>> na.innerproduct(a, b)
>>
>>
>>
>> He gets a blas error:
>>
>> ldc must be >= MAX(N,1): ldc=256 N=257Parameter 14 to routine 
>> cblas_dgemm was incorrect
>> Mac OS BLAS parameter error in cblas_dgemm, parameter #0, 
>> (unavailable), is 0
> 
> 
> On OS X 10.3, numarray 1.3.0, self-compiled for the Apple-installed 
> Python with vecLib as the BLAS, I don't get an error.
> 
> I don't get a result that's sensible to me, either; I get a 
> (257,1)-shape array with only the first and last entries non-zero.

Oh yes, and apparently a segfault on exit, too.

-- 
Robert Kern
rkern at ucsd.edu

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter




More information about the Numpy-discussion mailing list