[Numpy-discussion] Numpy.test() hangs

Charles R Harris charlesr.harris@gmail....
Tue Nov 11 12:13:21 CST 2008


On Tue, Nov 11, 2008 at 11:00 AM, Charles R Harris <
charlesr.harris@gmail.com> wrote:

>
>
> On Tue, Nov 11, 2008 at 10:33 AM, James Philbin <philbinj@gmail.com>wrote:
>
>> Python 2.5.2 (r252:60911, Oct  5 2008, 19:29:17)
>> [GCC 4.3.2] on linux2
>> Type "help", "copyright", "credits" or "license" for more information.
>> >>> import numpy
>> >>> numpy.__version__
>> '1.3.0.dev6005'
>> >>> numpy.test(verbosity=2)
>> ...
>> test_umath.TestLogAddExp.test_logaddexp_values ...
>>
>> The test hangs at the last line and never progresses further.
>>
>
> Ah good, some of the buildbots are doing this also and I'm trying to track
> it down. I don't see it on my machine. Could you post your compiler version?
> I suspect a library problem. Meanwhile I'll comment out the offending
> tests... and add some that might hang in more informative places.
>

Oops, I see your compiler/python version is already there. Mine are

Python 2.5.1 (r251:54863, Jun 15 2008, 18:24:51)
[GCC 4.3.0 20080428 (Red Hat 4.3.0-8)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

Can you try checking the functions log1p and exp separately for all three
floating types? Something like

>>> import numpy as np
>>> np.log1p(np.ones(1, dtype='f')*3)
array([ 1.38629436], dtype=float32)
>>> np.log1p(np.ones(1, dtype='d')*3)
array([ 1.38629436])
>>> np.log1p(np.ones(1, dtype='g')*3)
array([1.3862944], dtype=float96)


And the same with the exponential function.

Chuck




>
> Chuck
>
>
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