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QNSPSA produces irreproducible results
See original GitHub issueInformation
- Qiskit Terra version: qiskit-terra 0.17.0
- Python version: Python 3.7.3
- Operating system: MacOS Big Sur 11.6
What is the current behavior?
Executing a QNSPSA optimization with the same random seed gives different results.
We checked that the same optimization gives reproducible results with other optimizers such as ADAM.
Steps to reproduce the problem
Run an arbitrary optimization, e.g., VQE with QNSPSA, and compare the results.
What is the expected behavior?
The same results for the same seed.
Suggested solutions
Issue Analytics
- State:
- Created 2 years ago
- Comments:5 (5 by maintainers)
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We should make sure that the documentation for the
QNSPSAclass also includes the same note about setting the global seed, since users probably won’t see it with it just being on a parent class. Hopefully this is the issue here.Great to hear! I’ll just leave this open for now as a reminder to ourselves to update the documentation in the class.