vieting

GatherLayer on batch axis

7

This PR fixes #1087. As I face the issue in the context of supervised multilingual training, I added a more general test case also for that which does not necessarily...

GatherLayer on batch axis

3

I have a case where I'd like to use the GatherLayer on the batch axis. This works, but the size placeholder is not gathered. Does anything speak against gathering on...

fix SyntaxWarning

2

When running RETURNN, I get ``` /.../returnn/returnn/tf/network.py:1621: SyntaxWarning: "is" with a literal. Did you mean "=="? if loss is 0: /.../returnn/returnn/tf/util/basic.py:2024: SyntaxWarning: "is not" with a literal. Did you mean...

CombineLayer mismatches feature dims

9

I have a case where the inputs to the `CombineLayer` are of shape `(B, F, T)` and `(1, F)`. In this case, it does currently not work to find the...

I have a `MetaDataset` which contains two `HDFDatasets` and I want to apply a sequence list filter file. The `MetaDataset` has an option `seq_list_file`, but the docstring says >You only...

Segfault in cufftXtMakePlanMany

7

I have a returnn training for a CTC model which keeps crashing with EOFError: Ran out of input. It mostly trains an epoch or maybe also several epochs but crashes...

TF get_sprint_automata_for_batch: RASR segmentation fault in `Speech::CTCTopologyGraphBuilder::addLoopTransition`

41

I created an apptainer image with tf 2.13 and tried to run a training with `FastBaumWelchLoss`. It crashes in step 0 because the `get_sprint_automata_for_batch` op is not found. ``` EXCEPTION...

Segmentation fault with TF 2.14 image when providing automata to RETURNN

17

Due to an [issue](https://github.com/rwth-i6/returnn/issues/1450) that I have with a training that uses `FastBaumWelchLoss` that might be related to tensorflow, I wanted to try running the same setup with a newer...