OMP: Info #271: omp_set_nested routine deprecated

[squashcap]

Informations

• Qiskit Aer version: 0.11.2
• Python version: 3.10.4
• Operating system: 13.2.1

What is the current behavior?

Deprecation warning

Steps to reproduce the problem

import qiskit
from qiskit_experiments.library import StateTomography

# For simulation
from qiskit.providers.aer import AerSimulator

import numpy as np

qc_bell = qiskit.QuantumCircuit(2)
qc_bell.h(0)
qc_bell.cx(0, 1)

#Simulate the outcome
qc_bell.save_statevector()          
qobj = qiskit.assemble(qc_bell)     
sim = qiskit.Aer.get_backend('aer_simulator') 

sim.options.max_parallel_experiments=3  # Commenting out line this removes warning

result = sim.run(qobj).result() 


# QST Experiment
qstexp1 = StateTomography(qc_bell)
shotVal = 1e2
qstdata1 = qstexp1.run(sim, shots=shotVal, seed_simulation=100).block_for_results()

What is the expected behavior?

No warning

Suggested solutions

Warning suggests use omp_set_max_active_levels instead.