CPU
A flexible processor that follows a small number of instruction streams.
Best for branching, control and general tasksCOMPUTING APPROACH LAB
Choose the right computing approach
Start with a real task, change its conditions, and see when CPU, GPU or QPU becomes the right fit.
There is no universal winner. Every result separates measured, simulated, theoretical and recorded evidence.
GPU
Many similar processors that apply the same operation to lots of data.
Best for vectors, matrices and massive parallel workQPU
Qubits evolve through gates, phase and interference before measurement.
Best for selected algorithms with useful quantum structure01 · 02 · 03 · 04
How to read the evidence
Source labels tell you whether a value came from this device, a teaching model, complexity analysis or a saved QPU run.
- Measured
- Simulated
- Theoretical
- Recorded QPU
01 — 06
Choose the right computing approach
Start with a real task, change its conditions, and see when CPU, GPU or QPU becomes the right fit.
01Not started Which machine fits this task?
Choose a real task, change one meaningful condition, and see when the best fit changes.
02Not started The state-vector memory wall
Watch classical simulation memory double with every added Qubit.
03Not started Grover search race
Compare exhaustive search, parallel search and quantum query scaling.
04Not started Exact probabilities, sampled outcomes
Compare calculated probabilities with noisy measurement samples.
05Not started QFT is not a faster FFT
Contrast a readable classical spectrum with a quantum state transform.
06Not started The hybrid workflow
Tune a loop in which classical and quantum processors cooperate.