import cupy
x = cupy.random.random((5000, 1000))
cupy.isclose(x, x)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/nfs/pentschev/src/cupy/cupy/logic/comparison.py", line 100, in isclose
    return _is_close(a, b, rtol, atol, equal_nan)
  File "cupy/core/_kernel.pyx", line 805, in cupy.core._kernel.ufunc.__call__
    "a positional and keyword argument")
  File "cupy/core/_kernel.pyx", line 682, in cupy.core._kernel._guess_routine
    use_raw_value = _check_should_use_min_scalar(in_args)
  File "cupy/core/_kernel.pyx", line 634, in cupy.core._kernel._guess_routine_from_in_types

  File "/home/nfs/pentschev/.local/lib/python3.5/site-packages/numpy/core/overrides.py", line 165, in public_api
    implementation, public_api, relevant_args, args, kwargs)
  File "cupy/core/core.pyx", line 1252, in cupy.core.core.ndarray.__array_function__
    # Conversion:
  File "/home/nfs/pentschev/.local/lib/python3.5/site-packages/numpy/core/overrides.py", line 165, in public_api
    implementation, public_api, relevant_args, args, kwargs)
  File "cupy/core/core.pyx", line 1252, in cupy.core.core.ndarray.__array_function__
    # Conversion:

...

  File "/home/nfs/pentschev/.local/lib/python3.5/site-packages/numpy/core/overrides.py", line 165, in public_api
    implementation, public_api, relevant_args, args, kwargs)
  File "cupy/core/core.pyx", line 1252, in cupy.core.core.ndarray.__array_function__
    # Conversion:
  File "/home/nfs/pentschev/.local/lib/python3.5/site-packages/numpy/core/overrides.py", line 163, in public_api
    relevant_args = dispatcher(*args, **kwargs)
RecursionError: maximum recursion depth exceeded