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Make mittens deterministic #24

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  • Previously, randmatrix() calls np.random.seed every time. This
    makes it impossible to reproduce mittens runs.

  • Now a global random number generator is instantiated via
    np.random.default_rng.

I have not changed any interface functions and the change should be backwards compatible. A user can set the seed either by assigning a random number generator to the global variable random or assigning a seed to the global variable seed.

Nathan TeBlunthuis added 5 commits June 20, 2023 14:01
- Previously, randmatrix() calls np.random.seed every time.  This
makes it impossible to reproduce mittens runs.

- Now a global random number generator is instantiated via
np.random.default_rng.
- Previously, randmatrix() calls np.random.seed every time.  This
makes it impossible to reproduce mittens runs.

- Now a global random number generator is instantiated via
np.random.default_rng.
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