def test_output_is_tensor():
m = RunningAverage(output_transform=lambda x: x)
m.update(torch.rand(10, requires_grad=True).mean())
v = m.compute()
assert isinstance(v, torch.Tensor)
assert not v.requires_grad
m.update(torch.rand(10, requires_grad=True).mean())
v = m.compute()
assert isinstance(v, torch.Tensor)
assert not v.requires_grad
m.update(torch.rand(10, requires_grad=True).mean())
v = m.compute()
assert isinstance(v, torch.Tensor)
assert not v.requires_grad
def _test_distrib_accumulator_device(device):
metric_devices = [torch.device("cpu")]
if device.type != "xla":
metric_devices.append(idist.device())
for metric_device in metric_devices:
# Don't test the src=Metric case because compute() returns a scalar,
# so the metric doesn't accumulate on the device specified
avg = RunningAverage(output_transform=lambda x: x,
device=metric_device)
assert avg._device == metric_device
# Value is None until the first update then compute call
for _ in range(3):
avg.update(torch.tensor(1.0, device=device))
avg.compute()
assert (
avg._value.device == metric_device
), f"{type(avg._value.device)}:{avg._value.device} vs {type(metric_device)}:{metric_device}"