[SciPy-user] Different failures in scipy.test()

[Travis E. Oliphant]

Pearu Peterson wrote:
> 
> 
>>======================================================================
>>FAIL: check_sh_chebyt (test_basic.test_sh_chebyt)
>>----------------------------------------------------------------------
>>======================================================================
>>FAIL: check_random_complex (test_decomp.test_cholesky)
>>----------------------------------------------------------------------
>>======================================================================
>>FAIL: check_simple_complex (test_decomp.test_cholesky)
>>----------------------------------------------------------------------
> 
> 
> I am not sure why these tests fail when switching Numeric 23.0->23.1.
> I am using Python 2.3.1, Numeric 23.1, Atlas 3.2.1 and Scipy 
> 0.2.0__220.4275 and all tests pass OK. I'll later try earlier versions of 
> Python...
> 
> Anyway, I don't see how the above failures could be related to
> using different ATLAS versions as you originally suggested.
> 

I could see the sh_chebyt failure as being due to ATLAS because that 
routine uses eigenvalue decomposition and the failure is clearly a 
"significant digits" failure --- it can be corrected by changing the 
required accuracy of the test.

-Travis