issues: 314670220

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
314670220 MDU6SXNzdWUzMTQ2NzAyMjA= 2063 test_reduce[None-True-var-True-float32-2] fails on i386 1970404 closed 0     9 2018-04-16T14:15:31Z 2018-07-28T07:50:43Z 2018-07-28T07:50:43Z CONTRIBUTOR      

I see the following test failure with Ubuntu 18.04 32-bit (i386 architecture): ``` # make sure the compatiblility with pandas' results. actual = getattr(da, func)(skipna=skipna, dim=aggdim) if func == 'var': expected = series_reduce(da, func, skipna=skipna, dim=aggdim, ddof=0)

          assert_allclose(actual, expected, rtol=rtol)

E AssertionError: 1.0955861806869507 E 1.0792573690414429 Setting `rtol=1e-01` above reveals one more failure: # also check ddof!=0 case actual = getattr(da, func)(skipna=skipna, dim=aggdim, ddof=5) expected = series_reduce(da, func, skipna=skipna, dim=aggdim, ddof=5) assert_allclose(actual, expected, rtol=rtol) E AssertionError: 1.1401221752166748 E 1.1231297254562378 ``` These tests pass on other architectures; x86_64, ARM, POWER, etc.

I think this may be caused by i386 using 80-bit floating point precision internally, while other architectures use 64-bit.

 
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