def test_nowarn_on_managed_array(self):
@cuda.jit
def foo(r, x):
r[0] = x + 1
N = 10
ary = cuda.managed_array(N, dtype=np.float32)
with override_config('CUDA_WARN_ON_IMPLICIT_COPY', 1):
with warnings.catch_warnings(record=True) as w:
foo[1, N](ary, N)
self.assertEqual(len(w), 0)
def _test_managed_array(self, attach_global=True):
# Check the managed_array interface on both host and device.
ary = cuda.managed_array(100, dtype=np.double)
ary.fill(123.456)
self.assertTrue(all(ary == 123.456))
@cuda.jit('void(double[:])')
def kernel(x):
i = cuda.grid(1)
if i < x.shape[0]:
x[i] = 1.0
kernel[10, 10](ary)
cuda.current_context().synchronize()
self.assertTrue(all(ary == 1.0))
def test_produce_managed_stream(self):
s = cuda.stream()
managed_arr = cuda.managed_array(10, stream=s)
cai_stream = managed_arr.__cuda_array_interface__['stream']
self.assertEqual(s.handle.value, cai_stream)
def test_produce_managed_no_stream(self):
managed_arr = cuda.managed_array(10)
self.assertIsNone(managed_arr.__cuda_array_interface__['stream'])