NVIDIA/cuda-quantum

VQE tutorial for H2 example is giving NLOpt runtime error

marwafar opened this issue · 0 comments

Required prerequisites

  • Consult the security policy. If reporting a security vulnerability, do not report the bug using this form. Use the process described in the policy to report the issue.
  • Make sure you've read the documentation. Your issue may be addressed there.
  • Search the issue tracker to verify that this hasn't already been reported. +1 or comment there if it has.
  • If possible, make a PR with a failing test to give us a starting point to work on!

Describe the bug

The VQE code for H2: https://github.com/NVIDIA/cuda-quantum/blob/main/docs/sphinx/examples/python/tutorials/vqe.ipynb

When executing this cell of the code

optimizer = cudaq.optimizers.COBYLA()

energy, parameters = cudaq.vqe(kernel,
                               molecule,
                               optimizer,
                               argument_mapper=lambda parameters:
                               (parameters, qubit_count, electron_count),
                               parameter_count=parameter_count)

print(energy)

I have NLOpt runtime error

Steps to reproduce the bug

Run the tutorial here:
https://github.com/NVIDIA/cuda-quantum/blob/main/docs/sphinx/examples/python/tutorials/vqe.ipynb

Expected behavior

It should print the energy

Is this a regression? If it is, put the last known working version (or commit) here.

Not a regression

Environment

  • CUDA Quantum version:
  • Python version:
  • C++ compiler:
  • Operating system:

CUDA Quantum version: latest image (April 11)

Suggestions

No response