313 add timings for gcp opt with l bfgs

sandialabs / pyttb

Python Tensor Toolbox

https://pyttb.readthedocs.io

BSD 2-Clause "Simplified" License

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Closed jeremy-myers closed 1 month ago

jeremy-myers commented 2 months ago

Adds a default callback to L-BFGS-B that tracks the times of each iteration.
- User-defined callbacks are set as a private member callable in a subclass to LBFGSB called Monitor
- Adds tests to tests/gcp/test_optimizers.py
- Aligns with MATLAB usage
- Changes monotonic() to perf_counter() in StochasticSolver
Adds timers to gcp_opt in info dictionary

jeremy-myers commented 2 months ago

Regression tests fail on other code that was already failing, probably related to numpy & mypy in this PR.