Memory leak during parameter screening

[florian-huber]

When using the parameter_search function to do a simple grid search, we currently have memory leaks.
This is not during the actual training but seems to happen when evaluating the model after training.

This leads to the parameter search crashing after a few iterations (even on a 128GB RAM machine).

[justinjjvanderhooft]

Hmm, good to know. These weren't there in version 1 afaik, any pointers as to where they occur?

[florian-huber]

I have some ideas, and seems like we can easily fix at least the main causes quickly. (PR coming soon)