Problem introduced after 1.0rc2 on AIX with xlc

Brian Granger ellisonbg.net at gmail.com
Fri Oct 20 22:43:43 CDT 2006


Also, when I use seterr(all='ignore') the the tests fail:

======================================================================
FAIL: Ticket #112
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/common/homes/g/granger/usr/local/lib/python/numpy/core/tests/test_regression.py",
line 219, in check_longfloat_repr
    assert(str(a)[1:9] == str(a[0])[:8])
AssertionError

----------------------------------------------------------------------
Ran 516 tests in 0.823s

FAILED (failures=1)

Thanks for helping out on this.

On 10/20/06, Tim Hochberg <tim.hochberg at ieee.org> wrote:
> Brian Granger wrote:
> > Hi,
> >
> > i am running numpy on aix compiling with xlc.  Revision 1.0rc2 works
> > fine and passes all tests.  But 1.0rc3 and more recent give the
> > following on import:
> >
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in add
> > Warning: invalid value encountered in not_equal
> > Warning: invalid value encountered in absolute
> > Warning: invalid value encountered in less
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in equal
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in add
> > Warning: invalid value encountered in not_equal
> > Warning: invalid value encountered in absolute
> > Warning: invalid value encountered in less
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in equal
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > Warning: invalid value encountered in multiply
> > [lots more of this]
> >
> > The odd thing is that all tests pass.  I have looked, but can't find
> > where this Warning is coming from  in the code.  Any thoughts on where
> > this is coming from?  What can I do to help debug this?  I am not sure
> > what revision introduced this issue.
> >
> The reason that you are seeing this now is that the default error state
> has been tightened up. There were some issues with tests failing as a
> result of this, but I believe I fixed those already and you're seeing
> this on import, not when running the tests correct? The first thing to
> do is figure out where the invalids are occurring, and the natural way
> to do that is to set the error state to raise, but you can't set the
> error state till you import it, so that's not going to help here.
>
> I think the first thing that I would try is to throw in a
> seterr(all='raise', under='ignore') right after the call to _setdef in
> numeric.py. If you're lucky, this will point out where the invalids are
> popping up. As a sanity check, you could instead make this
> seterr(all='ignore'), which should make all the warnings go away, but
> won't tell you anything about why there are warnings to begin with.
>
> Regards,
>
> -tim
>
>
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