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QKT deepcopies kernel internally, fails with runtime primitives #600

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ElePT opened this issue Apr 12, 2023 · 4 comments
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QKT deepcopies kernel internally, fails with runtime primitives #600

ElePT opened this issue Apr 12, 2023 · 4 comments
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@OkuyanBoga @oscar-wallis
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type: bug 🐞 Something isn't working

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@ElePT
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ElePT commented Apr 12, 2023 •
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Environment

  • Qiskit Machine Learning version: 0.6.0
  • Python version: all
  • Operating system: all

What is happening?

On line 202, the quantum kernel trainer performs: output_kernel = copy.deepcopy(self._quantum_kernel), which is incompatible with the runtime primitives, as they do not support deepcopy. If you try to run it, a recursion error is raised (this does not happen with the Terra reference or Aer primitives).

How can we reproduce the issue?

See the original issue: Qiskit/qiskit-ibm-runtime#745

What should happen?

The QKT class should work seamlessly for all primitives.

Any suggestions?

I think it's worth revising whether we need to copy the kernel, or whether we need to return a kernel at all.

  • One possibility would be for the QKT class to return the trained paremeters and have the user deal with them as they wish (downside -> breaks current interface)
  • Another possibility would be to develop a more sophisticated kernel.copy that creates a new kernel without copying the primitive
  • Finally, we could have the QKT modify the original kernel object
@ElePT ElePT mentioned this issue Apr 12, 2023
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@adekusar-drl adekusar-drl added the type: bug 🐞 Something isn't working label Apr 13, 2023
@xaviervasques
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Hi @ElePT,
Have you been able to solve the problem ?
Thank you !

@adekusar-drl
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I'm looking into the issue. Sorry for the delay

@ElePT
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ElePT commented Jun 14, 2023 •
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@adekusar-drl I believe this PR should fix the issue: Qiskit/qiskit-ibm-runtime#902

@OkuyanBoga OkuyanBoga mentioned this issue Feb 7, 2024
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oscar-wallis added a commit to OkuyanBoga/hc-qiskit-machine-learning that referenced this issue Feb 9, 2024
@oscar-wallis
Merge branch 'qiskit-community:main' into Issue---QKT-deepcopies-kern…
92cc05f 
…el-internally,-fails-with-runtime-primitives-qiskit-community#600
oscar-wallis added a commit to OkuyanBoga/hc-qiskit-machine-learning that referenced this issue Feb 16, 2024
@oscar-wallis
Merge branch 'qiskit-community:main' into Issue---QKT-deepcopies-kern…
b7f8874 
…el-internally,-fails-with-runtime-primitives-qiskit-community#600
oscar-wallis added a commit that referenced this issue Feb 16, 2024
@oscar-wallis
Merge branch 'qiskit-community:main' into Issue---QKT-deepcopies-kern…
2c71605 
…el-internally,-fails-with-runtime-primitives-#600
@oscar-wallis
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Hiya, this issue should be fixed within the springv1 Hartree centre qml PR.

@OkuyanBoga OkuyanBoga mentioned this issue Feb 21, 2024
Merged
OkuyanBoga added a commit that referenced this issue Feb 29, 2024
@OkuyanBoga @oscar-wallis
Added max_circuits_per_job and removed deepcopy dependency of the qua…
2f49e9e 
…ntum kernel trainer fixing #701 and #600 (#772)

* Added an option for num_circuits per job for kernels to fix #701

* Updated documentation and format the style.

* Removed deepcopy dependency in quantum_kernel_trainer.py

* Added release notes

* quick fix for spell test

* Added unit tests for max_circuits_per_job

* Update fix-701-max_circuits_per_job-and-600-deepcopy-dependency-e6eda2e5b986c1be.yaml

Small release note bugfix

* Update fix-701-max_circuits_per_job-and-600-deepcopy-dependency-e6eda2e5b986c1be.yaml

* Minor modifications for the unit test

* Removed copy of TrainableKernel

---------

Co-authored-by: oscar-wallis <[email protected]>
mergify bot pushed a commit that referenced this issue Feb 29, 2024
@OkuyanBoga @mergify
Added max_circuits_per_job and removed deepcopy dependency of the qua…
f76b3a1 
…ntum kernel trainer fixing #701 and #600 (#772)

* Added an option for num_circuits per job for kernels to fix #701

* Updated documentation and format the style.

* Removed deepcopy dependency in quantum_kernel_trainer.py

* Added release notes

* quick fix for spell test

* Added unit tests for max_circuits_per_job

* Update fix-701-max_circuits_per_job-and-600-deepcopy-dependency-e6eda2e5b986c1be.yaml

Small release note bugfix

* Update fix-701-max_circuits_per_job-and-600-deepcopy-dependency-e6eda2e5b986c1be.yaml

* Minor modifications for the unit test

* Removed copy of TrainableKernel

---------

Co-authored-by: oscar-wallis <[email protected]>
(cherry picked from commit 2f49e9e)
adekusar-drl pushed a commit that referenced this issue Feb 29, 2024
@mergify @OkuyanBoga
Added max_circuits_per_job and removed deepcopy dependency of the qua…
8e18006 
…ntum kernel trainer fixing #701 and #600 (#772) (#780)

* Added an option for num_circuits per job for kernels to fix #701

* Updated documentation and format the style.

* Removed deepcopy dependency in quantum_kernel_trainer.py

* Added release notes

* quick fix for spell test

* Added unit tests for max_circuits_per_job

* Update fix-701-max_circuits_per_job-and-600-deepcopy-dependency-e6eda2e5b986c1be.yaml

Small release note bugfix

* Update fix-701-max_circuits_per_job-and-600-deepcopy-dependency-e6eda2e5b986c1be.yaml

* Minor modifications for the unit test

* Removed copy of TrainableKernel

---------

Co-authored-by: oscar-wallis <[email protected]>
(cherry picked from commit 2f49e9e)

Co-authored-by: M. Emre Sahin <[email protected]>
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@xaviervasques @OkuyanBoga @ElePT @adekusar-drl @oscar-wallis