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twiecki/stochastic_volatility_jax.ipynb

Last active April 13, 2021 20:27
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@twiecki
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twiecki commented Apr 13, 2021

I suppose pm.sample() already does this?

@brandonwillard
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This looks like something we need to update in PyMC3, as well.

Here's a quick comparison of the timing with and without graph optimizations (the example/model is taken from this notebook):

fgraph = model.logp.f.maker.fgraph
...
get_ipython().run_line_magic('timeit', 'fn2(*init_state).block_until_ready()')
# 198 µs ± 18.3 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)

fgraph = aesara.graph.fg.FunctionGraph(model.free_RVs, [model.logpt])
...
get_ipython().run_line_magic('timeit', 'fn2(*init_state).block_until_ready()')
# 236 µs ± 10.7 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)

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