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qiskit.algorithms.linear_solvers.hhl generates different euclidean_norm on different systems #8782

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Sudeep09 opened this issue Sep 23, 2022 · 0 comments · Fixed by #9832
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qiskit.algorithms.linear_solvers.hhl generates different euclidean_norm on different systems #8782

Sudeep09 opened this issue Sep 23, 2022 · 0 comments · Fixed by #9832
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bug Something isn't working mod: algorithms Related to the Algorithms module

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@Sudeep09
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Environment

Qiskit Software | Version
qiskit-terra | 0.18.1
qiskit-aer | 0.8.2
qiskit-ignis | 0.6.0
qiskit-ibmq-provider | 0.16.0
qiskit-aqua | 0.9.4
qiskit | 0.29.0
qiskit-machine-learning | 0.2.0

Python | 3.7.10
CPUs | 2
Memory (Gb) | 16.0

What is happening?

The euclidean_norm calculated using the above environment yield different results on different operating systems and instances.

How can we reproduce the issue?

naive_hhl_solution_epsi_01.euclidean_norm

What should happen?

We got two value at different systems 6.94134799831234 & 0.04482336051703237.

Any suggestions?

No response
@Sudeep09 Sudeep09 added the bug Something isn't working label Sep 23, 2022
@Sudeep09 Sudeep09 changed the title qiskit.algorithms.linear_solvers.hhl generates euclidean_norm on different systems qiskit.algorithms.linear_solvers.hhl generates different euclidean_norm on different systems Sep 23, 2022
@woodsp-ibm woodsp-ibm added the mod: algorithms Related to the Algorithms module label Mar 25, 2023
@woodsp-ibm woodsp-ibm mentioned this issue Mar 25, 2023
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Remove factorizers and linear solvers from algorithms ElePT/qiskit
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@Sudeep09 @woodsp-ibm