tensorflow / tensorflow/probability
Importing substrates is slow
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Description
It takes a noticeably long time to just import TFP substrates:
$ time python3 -c "import tensorflow_probability.substrates.jax"
python3 -c "import tensorflow_probability.substrates.jax" 4.72s user 0.77s system 116% cpu 4.724 total
$ time python3 -c "import tensorflow_probability.substrates.numpy"
python3 -c "import tensorflow_probability.substrates.numpy" 4.75s user 0.86s system 115% cpu 4.843 total
Might it be possible to speed up these imports somehow?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the timings for importing tensorflow_probability.substrates.jax and tensorflow_probability.substrates.numpy with the shown Python commands. Trace those substrate import entry points to identify the startup cost; done means demonstrating that both imports are measurably faster without breaking their import behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- numpy, python
- Domain
- machine-learning, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100