RuRo edited a comment on issue #18090:
URL:
https://github.com/apache/incubator-mxnet/issues/18090#issuecomment-617413655
> @RuRo, @reminisce helped point out an error in your reproducer script. You
use zero-shape tensor, but didn't enable numpy shape semantics. It should be
Ah, I see. I had the `npx.set_np()` call, when I started reproducing this
issue, but I removed it while trying to simplify the bug since it made no
difference for the hanging behaviour. I was under the impression, that scalar
arrays are enabled by default for the `mx.np` kind of array. My bad.
Also, the hang happens with or without the `mx.nd.waitall()` call. Also, as
previously mentioned, you don't need the GPU context. So the short version is
```python
import mxnet as mx
mx.npx.set_np()
while True:
for _ in range(100):
mx_data = mx.np.array(0)
mx_x = mx.np.empty_like(mx_data)
print(end='.', flush=True)
```
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