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Is there anything you can do on a rented QC that you can't do cheaper on a simulated QC on a "classical" CPU/GPU today?
by cbm-vic-20 7mo ago
Is there anything you can do on a rented QC that you can't do cheaper on a simulated QC on a "classical" CPU/GPU today?
- AlanYx 7mo agoNo. They're a decent playground for prototyping hybrid algorithms but even that is limited. No one has yet published a hybrid algorithm on a rentable QC provider that has better benchmark performance than a modern CPU/GPU implementation.
- t312227 7mo agohello, yes ... especially if you want to execute quantum-circuits which use a lot of qubits. why!? one approach of the simulation of quantum-computers rely on the so called "state vector" of the machine, and its memory-usage grows exponentially. for example qiskit AER * https://qiskit.github.io/qiskit-aer/stubs/qiskit_aer.StatevectorSimulator.html# https://qiskit.github.io/qiskit-aer/stubs/qiskit_aer.Stateve... just as an example: for 32 qubits, the simulator needs 64 GB RAM =?> double the RAM for each additional qubit so: for 36 qubits, the simulator needs 1 TB RAM :) so it gets pretty "costly" to do simulations rather quickly ... just my 0.02€