michelwi

The parameter `order` refers to > The order of the spline interpolation, default is 3. The order has to be in the range 0-5. so 0 would be "constant", 3...

> I think order 0 is much faster than 1. yes, it can be that order 0 only copies values whereas 1 does some actual calculations. If 0 is precise...

ok. My assumption based on general interpolation experience is that there is a large performance gap between constant and linear and then only smaller gaps as the order increases. But...

Bevor dropping the support for python2 we should make sure that in the instances where returnn has to talk to rasr (sequence training, Baum-Welch training, feature-extraction) this still works. I.e....

> is there any good reason they use such old Python? in my estimation the main reason is that the OS we use ships with this old version of python...

> > maybe start the process now > > I'm not really sure what you mean by that. I mean to start the transition in i6_core _now_ and not only...

> > I mean to start the transition in i6_core _now_ and not only when the new OS is deployed. > > So you suggest the same here for RETURNN?...

a similar problem appears with non-ascii segment names: ``` Traceback (most recent call last): File "/home/wmichel/software/returnn/returnn/datasets/sprint.py", line 895, in ExternSprintDataset._reader_thread_proc line: data_type, args = self._read_next_raw() locals: data_type = b'data', len...

> Okay this seems to be an issue with the pickle protocol and non-ascii content... for the orth non-ascii characters work fine e.g. ``` seq 2143 target 'orth': array([208, 188,...

Sorry for the delay, I just tested it with the current returnn head and the same error persists: ``` EXCEPTION Traceback (most recent call last): File "/nas/models/asr/wmichel/setups/debugging/returnn/returnn/datasets/sprint.py", line 902, in...