[SciPy-User] many test failures on windows 64

[Robin]

On Tue, Jul 6, 2010 at 3:36 AM, Bruce Southey <bsouthey at gmail.com> wrote:
> On Mon, Jul 5, 2010 at 5:40 AM, Robin <robince at gmail.com> wrote:
>> Hi,
>>
>> I am using Python.org amd64 python build on windows 7 64 bit.
>>
>> I am using numpy and scipy builds from here:
>> http://www.lfd.uci.edu/~gohlke/pythonlibs/
>>
>> I get many errors in scipy test (none for numpy). Particularly in
>> scipy.sparse.linalg which I need to use (and in my code it appears
>> spsolve is giving incorrect results).
>>
>> Is there a better 64 bit windows build to use?
>
> Under 32-bit Python and the scipy 0.8 rc1 under Windows 7 64bit, I
> only get the test_boost error the directory removal error (from this
> test: "test_create_catalog (test_catalog.TestGetCatalog) ...").
>
> Some of the errors could be due to Window's lack of support for 64-bit
> like the "test_complex (test_basic.TestLongDoubleFailure)". However,
> you probably would have to build your own find out those if no one
> else has them.

I suspect there are more errors because of indices being longs instead
of ints on Windows.

> Given all the issues with 64-bit windows, do you really need 64-bit numpy/scipy?

Unfortunately I do... it looks like I will now have to port a lot of
Python code to Matlab. I know Windows isn't very popular in the Scipy
community, and I try to avoid using it when I can, but it seems
Windows 7 is a lot better than previous versions. Also >4GB RAM is now
more or less standard for numerical work so I think 64 bit windows
really should be supported. In my group a large factor in the decision
to use windows was remote desktop and terminal services... For
non-command line users there is nothing equivalent that I know of.
(There is NX for linux but only 2 users is free - with a small tweak
to windows 7 it is possible to have full terminal server behaviour).

I wonder how enthought get around this problem with 64 bit EPD on windows?

Cheers

Robin


>
> Bruce
>
>
>>>> scipy.test()
> Running unit tests for scipy
> NumPy version 1.4.1
> NumPy is installed in E:\Python26\lib\site-packages\numpy
> SciPy version 0.8.0rc1
> SciPy is installed in E:\Python26\lib\site-packages\scipy
> Python version 2.6.3 (r263rc1:75186, Oct  2 2009, 20:40:30) [MSC
> v.1500 32 bit (Intel)]
> nose version 0.11.1
> [snip]
> ======================================================================
> FAIL: test_data.test_boost(<Data for arccosh: acosh_data_ipp-acosh_data>,)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>  File "E:\Python26\lib\site-packages\nose-0.11.1-py2.6.egg\nose\case.py",
> line 183, in runTest
>    self.test(*self.arg)
>  File "E:\Python26\lib\site-packages\scipy\special\tests\test_data.py",
> line 205, in _test_factory
>    test.check(dtype=dtype)
>  File "E:\Python26\lib\site-packages\scipy\special\tests\testutils.py",
> line 223, in check
>    assert False, "\n".join(msg)
> AssertionError:
> Max |adiff|: 1.77636e-15
> Max |rdiff|: 2.44233e-14
> Bad results for the following points (in output 0):
>            1.0000014305114746 =>          0.0016914556651292853 !=
>      0.0016914556651292944  (rdiff         5.3842961637318929e-15)
>             1.000007152557373 =>          0.0037822080446613874 !=
>      0.0037822080446612951  (rdiff         2.4423306175913249e-14)
>            1.0000138282775879 =>          0.0052589439468011612 !=
>      0.0052589439468011014  (rdiff         1.1380223962570286e-14)
>            1.0000600814819336 =>           0.010961831992188913 !=
>       0.010961831992188852  (rdiff         5.5387933059412495e-15)
>            1.0001168251037598 =>           0.015285472131830449 !=
>       0.015285472131830425  (rdiff         1.5888373256788015e-15)
>            1.0003981590270996 =>           0.028218171738655283 !=
>       0.028218171738655373  (rdiff         3.1967209494023856e-15)
>
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